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Dr. A.J. Koch-Hansen
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Publication list

Refereed articles

Non-refereed articles & conference contributions

Theses

Press releases & Popular articles



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(Last update: Feb. 02, 2024)
(née Koch; publications before 2021 are listed as ``Koch, A.'')

Refereed articles

  1. Butler, E., Kunder, A., Prudil, Z., Covey, K.R., Ball, M., Campos, C., Gollnick, K., Carjaval, J.O. Hughes, J., Devine, K., Johnson, C., Vivas, A.K., Rich, R.M., Joyce, M., Simion, I.T., Marchetti, T., Koch-Hansen, A.J., et 2 alii 2023, ApJL, submitted:
    `RR Lyrae Stars Belonging to the Candidate Globular Cluster Patchick 99'

  2. Prudil, Z., Smolec, R., Kunder, A., Koch-Hansen, A.J., & Dekany, I. 2024, A&A, submitted:
    `The Galactic Bulge exploration II.: Line-of-sight velocity templates for single mode RR Lyrae stars for Gaia and APOGEE spectra'

  3. Koch-Hansen, A.J., Pasquali, A., Rich, R.M., Gerhard, O., & Müller, O. 2024, A&A, in press:
    `The Halos and Environments of Nearby Galaxies (HERON) Survey IV: Complexity in the boxy galaxies NGC 720 and NGC 2768'

  4. Prudil, Z., Kunder, A., Dekany, I., & Koch-Hansen, A.J. 2024, A&A, in press:
    'The Galactic Bulge exploration. I. The period-absolute magnitude-metallicity relations for G_BP, V, G, G_RP, $I$, $J$, $H$, and $K_s$ passbands using Gaia DR3 parallaxes'

  5. Kunder, A., Prudil, Z., Covey, K.R., Hughes, J., Joyce, M., Simion, I.T., Kuss, R., Campos, C., Johnson, C.I., Pilachowski, C.A., Larson, K.A., Koch-Hansen, A.J. et 10 alii 2024, AJ, 167, 21:
    The Milky Way Bulge extra-tidal star survey: BH 261 (AL 3)'

  6. Lim, D., Koch-Hansen, A.J. Hong, S.-H., Chun, C., & Lee, W. 2024, AJ, 167, 3:
    `Chemical homogeneity of wide binary systems: An approach from Near-Infrared spectroscopy'

  7. Mosenkov, A.V., Rich, R.M., Fusco, M., Kennefick, J., Thilker, D., Marchuk, A., Brosch, N., West, M., Gregg, M., Longstaff, F., Koch-Hansen, A.J., et 2 alii 2023, MNRAS, 525, 3016:
    ` The haloes and environments of nearby galaxies (HERON) -- III. A 45 kpc spiral structure in the GLSB galaxy UGC 4599'

  8. Kader, J.A., Pilachowski, C.A., Johnson, C.I., Rich, R.M., Young, M.D., Simion, I.T., Clarkson, W.I., Michael, S., Kunder, A., Vivas, A.K., Koch-Hansen, A.J., & Marchetti, T. 2022, ApJ, 950, 126:
    ` Blanco DECam Bulge Survey (BDBS) VI: Extinction Maps Towards Southern Galactic Bulge Globular Clusters'

  9. Kader, J.A., Pilachowski, C.A., Johnson, C.I., Rich, R.M., Young, M.D., Simion, I.T., Clarkson, W.I., Michael, S., Kunder, A., Vivas, A.K., Koch-Hansen, A.J., & Marchetti, T. 2022, ApJ, 940, 76:
    ` Blanco DECam Bulge Survey (BDBS) VII: Multiple Populations in Globular Clusters of the Galactic Bulge}'

  10. Lim, D., Koch-Hansen, A.J., Chun, S.-H., Hong, S., & Lee, Y.-W. 2022, A&A, 666, 62:
    ` High-resolution near-infrared spectroscopy of globular cluster and eld stars toward the Galactic bulge'

  11. Lombardo, L., Bonifacio, P., Francois, P., Hansen, C.J., Caffau, E., Hanke, M., Skuladottir, \'A., Arcones, A., Eichler, M., Reichert, M., Psaltis, A., Koch-Hansen, A.J., & Sbordone, L. 2022, A&A, 665, 10:
    ` The CERES survey I. Stellar parameters and chemical abundances of selected elements'

  12. Prudil, Z., Koch-Hansen, A.J., Lemasle, B., Grebel, E.K., Marchetti, T., Hansen, C.J., Crestani, J., Bono, G., et 4 alii 2022, A&A, 664, 148:
    ` Milky Way archaeology using RR Lyrae and type II Cepheids II. Unbound RR Lyrae stars, and mass of the Milky Way'

  13. Marchetti, T., Johnson, C.I., Joyce, M., Rich, R.M., Simion, I.T., Young, M.D., Clarkson, W., Pilachowski, C.A., Michael, S., Kunder, A., Koch-Hansen, A.J., & Vivas, K. 2022, A&A, 664, 124:
    ` The Blanco DECam Bulge Survey (BDBS) VI. Cleaning the foreground populations from Galactic bulge Color-Magnitude Diagrams using Gaia EDR3'

  14. Johnson, C.I., Rich, R.M., Simion, I.T., Young, M.D., Clarkson, W.I., Pilachowski, C.A., Michael, S., Marchetti, T., Soto, M., Kunder, A., Koch-Hansen, A.J., et 4 alii 2022, MNRAS, 515, 1496:
    ` Blanco DECam Bulge Survey (BDBS) V: Metallicity Distributions and Bulge Structure from 2.6 Million Red Clump Stars'

  15. Lim, D., Koch-Hansen, A.J., Hansen, C.J., Lepine, S., Marshall, J., Wilkinson, M.I., & Penarrubia, J. 2021, A&A, 655, 26:
    `Chemodynamics of metal-poor wide binaries in the Galactic halo: An association with the Sequoia event'

  16. Koch-Hansen, A.J., Hansen, C.J., & McWilliam, A. 2021, A&A, 653, 2):
    `NGC~1261: an r-process enhanced globular cluster from the Gaia-Enceladus event'

  17. Kunder, A., Crabb, R.E., Debattista, V.P., Koch-Hansen, A.J., & Huhmann, B.M. 2021, ApJ, 162, 86:
    `Spectroscopic observations of obscured Galactic populations in the inner Galaxy: 2MASS-GC02, Terzan 4, and the 200 km/s stellar peak'

  18. Bonifacio, P., Monaco, L., Salvadori, S., Caffau, E., Spite, M., Sbordone, L., Spite, F., Ludwig, H.-G., Di Matteo, P., Haywood, M., Fran\c ois, P., Koch-Hansen, A.J., Christlieb, N., & Zaggia, S. 2021, A&A, 651, 79:
    `TOPoS VI. The metal-weak tail of the metallicity distribution functions of the Milky Way and of the Gaia-Sausage-Enceladus structure'

  19. Crestani, J., Braga, V.F., Fabrizio, M., Bono, G., Sneden, C., Preston, G., Ferraro, I., Iannicola, G., Nonino, M., Fiorentino, G., Th\'evenin, F., Lemasle, B., Prudil, Z., Alves-Brito, A., Altavilla, G., Charboyer, B., Dall'Ora, M., D'Orazi, V., Gilligan, C., Grebel, E.K., Koch-Hansen, A.J., et 15 alii, ApJ, 914, 10:
    `On the Use of Field RR Lyrae as Galactic Probes. III. The alpha-element abundances'

  20. Prudil, Z., Hanke, M., Lemasle, B., Crestani, J., Braga, V.F., Fabrizio, M., Koch-Hansen, A.J., Bono, G., et 14 alii 2021, A&A, 648, 78:
    `Milky Way archaeology using RR Lyrae and type II Cepheids I. The Orphan stream in 7D using RR Lyrae stars'

  21. Lim, D., Koch-Hansen, A.J., Chung, C., Johnson, C.I., Kunder, A., Simion, I.T., Rich, R.M., Clarkson, W.I., et 4 alii 2021, A&A, 647, 34:
    `Blanco DECam Bulge Survey (BDBS) III: A new view on the double red clump in the Milky Way bulge through luminosity and color distribution'

  22. Lim, D., Lee, Y.-W., Koch, A., Hong, S., Johnson, C.I., Kim, J.J., Chung, C., Mateo, M., & Bailey, J.I., III 2020, ApJ, 907, 47:
    `Differences in chemical abundances between the faint and bright red clump in the bulge'

  23. Koch-Hansen, A.J., Hansen, C.J., Lombardo, L., Bonifacio, P., Hanke, M., & Caffau, E. 2020, A&A, 645, 64:
    `Purveyors of fine halos III. Chemical abundance analysis of a potential ωCentauri associate'

  24. Hansen, C.J., Koch, A., Mashonkina, L., Magg, M., Bergemann, M., Sitnova, T., Gallagher, A., Semenova, E., et 5 alii 2020, A&A, 643, 49:
    `Mono-enriched stars and Galactic chemical evolution -- Possible biases in observations and theory'

  25. Johnson, C.I., Rich, R.M., Young, M.D., Simion, I.T., Clarkson, W.I., Pilachowski, C.A., Michael, S., Kunder, A., Koch, A., & Vivas, A.K. 2020, MNRAS, 499, 2357
    `Blanco DECam Bulge Survey (BDBS) II: Project Performance, Data Analysis, and Early Science Results'

  26. Rich, R.M., Johnson, C.I., Young, M., Simion, I.T., Clarkson, W.I., Pilachowski, C., Michael, S., Kunder, A., Vivas, A.K., Koch, A., et 9 alii 2020, MNRAS, 499, 2340:
    `The Bulge DECam Blanco Survey. I. The Survey Description and Early Results'

  27. Savino, A., Koch, A., Prudil, Z., Kunder, A. 2020, A&A, 641, 96:
    `The age of the Milky Way inner stellar spheroid from RR Lyrae population synthesis'

  28. Tempel, E., Tuvikene, T., Muru, M.M., Stoica, R.S., Bensby, T., Chiappini, C., Christlieb, N., Cioni, M.-R.L, Comparat, J., Feltzing, S., Hook, I., Koch, A., et 12 alii 2020, MNRAS, 497, 4626:
    `Optimised tiling pattern for multi-object spectroscopic surveys: application to the 4MOST survey'

  29. Cullinane, L., Mackey, D.A., Da Costa, G.S., Koposov, S.E., Belokurov, V., Erkal, D., Koch, A., et 2 alii 2020, MNRAS, 497, 3055:
    `The Magellanic Edges Survey I.: Description and first results'

  30. Hanke, M., Koch, A., Prudil, Z., Grebel, E.K., & Bastian, U. 2020, A&A, 637, 98:
    `Purveyors of fine halos II: Chemodynamic association of escapees with Milky Way halo globular clusters'

  31. Kunder, A.M., Perez Villégas, A., Rich, R.M., Ogata, J., Murari, E., Boren, E., Johnson, C.I., Nataf, D.M., Walker, A., Bono, G., Koch, A., et 3 alii 2020, AJ, 159, 270:
    `The Bulge Radial Velocity Assay for RR Lyrae stars (BRAVA-RR) DR2: A bimodal bulge'

  32. Mosenkov, A., Rich, R.M., Koch, A., Brosch, N., Thilker, D., Román, J., & Müller, O. 2020, MNRAS, 494, 1751:
    `Halos and Environments of Nearby Galaxies (HERON) II: The outer structure of edge-on galaxies'

  33. Tempel, E., Norberg, P., Tuvikene, T., Bensby, T., Chiappini, C., Cioni, M.-R.L, Comparat, J., Davies, L.J.M., Guiglon, G., Koch, A., et 13 alii 2019, A&A, 625, 101:
    `Probabilistic fibre-to-target assignment algorithm for multi-object spectroscopic surveys'

  34. Reina-Campos, M., Hughes, M.E., Kruijssen, J.M.D., Pfeffer, J.L., Bastian, N., Crain, R.A., Koch, A., & Grebel, E.K. 2019, MNRAS, 493, 3422:
    `The mass fraction of halo stars contributed by globular clusters in the E-MOSAICS simulations'

  35. Koch, A., & Côté, P. 2019, A&A, 632, 55:
    `An outer shade of Pal: Abundance analysis of the outer halo Globular Cluster Palomar 13'

  36. Watson, D., Hansen, C.J., Selsing, J., Koch, A., Malesani, D., Andersen, A.C., Fynbo, J.P.U., Arcones, A., et 10 alii 2019, Nature, 574, 497:
    `Strontium discovered in the merger of two neutron stars'

  37. Rich, R.M., Mosenkov, A., Lee-Saunders, H., Koch, A., Kormendy, J., Kennefick, J., Brosch, N., Saadie, M.L., et 9 alii 2019, MNRAS, 490, 1539:
    `The Halos and Environments of Nearby Galaxies (HERON) Survey I. Sample characteristics and halo diameters'

  38. Lora, V., Grebel, E.K., Schmeja, S., & Koch, A. 2019, ApJ, 878, 152:
    `Cold, old, and metal-poor: new stellar substructures in the Milky Way's dwarf spheroidals'

  39. Koch, A., Xu, S., & Rich, R.M. 2019, A&A, 627, 70:
    `Chemical composition of the outer halo globular cluster Palomar 15'

  40. Koch, A., Grebel, E.K., & Martell, S.L. 2019, A&A, 625, 75:
    `Purveyors of fine halos: Re-assessing globular cluster contributions to the Milky Way halo build-up with SDSS-IV'

  41. Müller, O., Rich, R.M., Román, J., Yildiz, M.K., Bilek, M., Duc, P.-A., Fensch, J., Trujillo, I., & Koch, A. 2019, A&A, 624, L6:
    `A tidal's tale: detection of multiple stellar streams in the environment of NGC 1052'

  42. Hansen, C.J., Hansen, T.T., Koch, A., Beers, T.C., Nordström, B., Placco, V.M., & Andersen, J. 2019, A&A, 623, 128:
    `Abundances and kinematics of carbon-enhanced very metal-poor stars in the Galactic halo -- a new classification scheme based on Sr and Ba'

  43. Koch, A., Reichert, M., Hansen, C.J., Hampel, M., Stancliffe, R.J., Karakas, A.I., & Arcones, A. 2019, A&A, 622, 159:
    `Unusual neutron-capture nucleosynthesis in a carbon-rich Galactic bulge star'

  44. Francois, P., Caffau, E., Bonifacio, P., Spite, M., Spite, F., Cayrel, R., Christlieb, N., Gallagher, A., Klessen, R., Koch, A., et 6 alii 2018, A&A, 620, 187
    `TOPoS: V. Abundance ratios in a sample of very metal-poor turn-off stars'

  45. Hanke, M., Hansen, C.J., Koch, A., & Grebel, E.K. 2018, A&A, 619, 134:
    `ATHOS: On-the-fly stellar parameter determination of FGK stars from optical spectra based on line-depth ratios'

  46. Piatti, A., & Koch, A. 2018, ApJ, 867, 8:
    `Search for an intrinsic metallicity spread in old globular clusters of the Large Magellanic Cloud'

  47. Koch, A., Kacharov, N., & Hanke, M. 2018, A&A, 616, 74:
    `Kinematics of outer halo globular clusters: M 75 and NGC 6426'

  48. Bonifacio, P., Caffau, E., Spite, M., Spite, F., Sbordone, L., Monaco, L., Francois, P., Plez, B., Molaro, P., Gallagher, A.J., Cayrel, R., Christlieb, N. Klessen, R., Koch, A., et 4 alii 2018, A&A, 612, 55:
    `TOPoS: IV. Chemical abundances from high-resolution observations of seven EMP stars'

  49. Kunder, A., Mills, A., Edgecomb, J., Thomas, M., Schilter, L., Boyle, C., Parker, S., Bellevue, G., Rich, R.M., Koch, A., et 2 alii 2018, AJ, 155, 171:
    `Radial velocities of RR Lyrae stars in and around NGC 6441'

  50. Hollyhead, K., Lardo, C., Kacharov, N., Bastian, N., Hilker, M., Rejkuba, M., Koch, A., et 2 alii 2018, MNRAS, 476, 114:
    `Kron 3: a fourth intermediate age cluster in the SMC with evidence of multiple populations'

  51. Koch, A., Hansen, T.T., & Kunder, A. 2018, A&A, 609, 13:
    `Detailed chemical abundance analysis of the thick disk star cluster Gaia 1'

  52. Susmitha, A., Koch, A., & Sivarani, T. 2017, A&A, 606, 112:
    `Abundance analysis of a CEMP-no star in the Carina dwarf spheroidal galaxy'

  53. Koch, A., Kunder, A., & Wojno, J. 2017, A&A, 605, 128:
    'Spectroscopic confirmation of the low-latitude object FSR 1716 as an old globular cluster'

  54. Duffau, S., Caffau, E., Sbordone, L., Bonifacio, P., Andrievsky, S., Korotin, S., Babusiaux, C., Salvadori, S., Monaco, L., Francois, P., Skúladóttir, Á, Bragaglia, A., Donati, P., Spina, L., Gallagher, A.J., Ludwig, H.-G., Christlieb, N., Hansen, C.J., Mott, A., Steffen, M., Zaggia, S., Blanco-Cuaresma, S., Calura, F., Friel, E., F.M., Jiménez-Esteban, F.M., Koch, A., et 17 alii 2017, A&A, 604, 128:
    `The Gaia-ESO Survey: Galactic evolution of sulphur and zinc'

  55. Koch, A., Hansen, C.J., & Kunder, A.M. 2017, A&A, 604, 41:
    `Spectroscopic study of the elusive cluster ESO452-SC11 and its surroundings'

  56. Spencer, M.E., Mateo, M., Walker, M.G., Olszewski, E.W., McConnachie, A.W., Kirby, E.N., & Koch, A. 2017, AJ, 153, 254
    `The binary fraction of stars in dwarf galaxies: The case of Leo II'

  57. Koch, A., Black, C.S., Rich, R.M., Longstaff, F.A., Collins, M.L.M., & Janz, J. 2017, AN, 338, 503:
    `Another look at the size of the low-surface brightness galaxy VCC 1661 in the Virgo Cluster'

  58. Koch, A., & Côté, P. 2017, A&A, 601, 41:
    `Galactic Pal-eontology: Abundance analysis of the disrupted globular cluster Palomar 5'

  59. Hanke, M., Koch, A., Hansen, C.J., & McWilliam, A. 2017, A&A, 599, 97:
    `Insights into the chemical composition of the metal-poor Milky Way halo globular cluster NGC 6426'

  60. Hansen, C.J., Jofr\'e, P., Koch, A., McWilliam, A., & Sneden, C.S. 2017, A&A, 598, 54:
    `Something borrowed, something blue: The nature of blue metal-poor stars inferred from their colours and chemical abundances'

  61. Pancino, E., Lardo, C., Altavilla, G., et al. 2017, A&A, 598, 5:
    `The Gaia ESO Survey: calibration strategy'

  62. Hollyhead, K., Kacharov, N., Lardo, C., Bastian, N., Hilker, M., Rejkuba, M., Koch, A., et 2 alii % Grebel, E.K., & Georgiev, I. 2017, MNRAS, 465, L39:
    `Evidence for multiple populations in intermediate age cluster Lindsay 1 in the SMC'

  63. Caffau, E., Bonifacio, P., Spite, M., Spite, F., Monaco, L., Sbordone, L., Francois, P., Gallagher, A.J., Plez, B., Zaggia, S., Ludwig, H.-G., Cayrel, R., Koch., A., et 4 alii 2016, A&A, 595, L6:
    `TOPoS: III. An extremely iron-poor CEMP multiple system'

  64. Ruchti, G.R., Feltzing, S., Lind, K., Caffau, E., Korn, A., Schnurr, O., Hansen, C.J., Koch, A., et 2 alii 2016, MNRAS, 461, 2174:
    `A new algorithm for optimizing the wavelength coverage for spectroscopic studies: Spectral Wavelength Optimization Code (SWOC)'

  65. Hansen, C.J., Rich, R.M., Koch, A., Xu, S., Kunder, A.M., & Ludwig, H.-G. 2016, A&A, 590, 39:
    `Chemical abundances in a high-velocity RR Lyrae star near the bulge'

  66. Kunder, A.M., Rich, R.M., Koch, A., et 8 alii 2016, ApJL, 821, L25:
    `Before the bar: Kinematic detection of a spheroidal metal-poor bulge component'

  67. Koch, A., McWilliam, A., Preston, G.W., & Thompson, I.B. 2016, A&A, 587, 124:
    `Metal-poor stars towards the Galactic bulge -- a population potpourri'

  68. Martin, N.F., Ibata, R.A., Collins, M.L.M., Rich, R.M., Bell, E.F., Ferguson, A.M.N., Laevens, B.P.M., Rix, H.-W., Chapman, S.C., & Koch, A. 2016, ApJ, 818, 40:
    `Triangulum II: A very metal-poor and dynamically hot system'

  69. Hendricks, B., Boeche, C., Johnson, C.I., Frank, M.J., Koch, A., Mateo, M., & Bailey, J.I., III 2015, A&A, 585, 86:
    `Evidence for chemical enrichment coupling of globular clusters and field stars in the Fornax dSph'

  70. Koch, A., Frank, M.J., Pasquali, A., Rich, R.M., & Rabitz, A. 2015, ApJ, 815, 105:
    `Major mergers with small galaxies -- the discovery of a Magellanic-type galaxy at z=0.12'

  71. Hansen, C.J., Ludwig, H.-G., Seifert, W., Koch, A., et 11 alii 2015, AN, 336, 665:
    `Science from a blue wavelength range: A possible design for the blue arm of 4MOST'

  72. Frank, M., Koch, A., Feltzing, S., Kacharov, N., Wilkinson, M.I., & Irwin, M. 2015, A&A, 581, 72:
    `Strömgen ubvy photometry of the peculiar globular cluster NGC 2419'

  73. Kunder, A., Rich, R.M., Hawkins, K., Poleski, R., Storm, J., Johnson, C.I., Shen, J., Li, Z.-Y., Cordero, M.J., Nataf, D., Bono, G., Walker, A.R., Koch, A., et 11 alii 2015, ApJL, 808, L12:
    `A high-velocity bulge RR Lyrae variable on a halo-like orbit'

  74. Koch, A., Danforth, C.W., Rich, R.M., Ibata, R.A., & Keeney, B.A. 2015, ApJ, 807, 153:
    A detection of gas associated with the M31 Stellar Stream'

  75. Bonifacio, P., Caffau, E., Spite, M., Limongi, M., Chieffi, A., Klessen, R., Francois, P., Molaro, P., Ludwig, H.-G., Zaggia, S., Spite, F., Plez, B., Cayrel, R., Christlieb, N., Clark, P.C., Glover, S., Hammer, F., Koch. A., et 3 alii 2015, A&A, 579, 28:
    ` TOPoS: II. On the bimodality of carbon enhanced stars. Implications on the early chemical evolution of galaxies'

  76. San Roman, I., Munoz, C., Geisler, D., Villanova, S., Kacharov, N., Koch, A., et 23 alii 2015, A&A, 579, 6:
    `The Gaia-ESO Survey: Detailed abundances in the metal-poor globular cluster NGC 4372'

  77. Hyde, E., Keller, S., Zucker, D., Ibata, R., Siebert, A., Lewis, G., Penarrubia, J., Irwin, M., Gilmore, G., Lane, R., Koch, A., et 3 alii 2015, ApJ, 805, 189:
    `Selecting Sagittarius: Identification and chemical characterization of the Sagittarius Stream'

  78. Kacharov, N., Koch, A., Caffau, E., & Sbordone, L. 2015, A&A, 577, 18:
    `The Galactic evolution of sulphur traced by globular clusters'

  79. Ural, U., Cescutti, G., Koch, A., Kleyna, J.T., Feltzing, S., & Wilkinson, M.I. 2015, MNRAS, 449, 761:
    `An inefficient dwarf: Chemical abundances and the evolution of the Ursa Minor dwarf spheroidal galaxy'

  80. Hendricks, B., Koch, A., Walker, M., Johnson, C.I., Penarrubia, J., & Gilmore, G.F. 2014, A&A, 572, 82
    `Insights from the outskirts: chemical and dynamical properties in the outer parts of the Fornax dwarf spheroidal galaxy'

  81. Koch, A., & Rich, R.M. 2014, ApJ, 794, 89
    `A chemical confirmation of the faint Boötes II dwarf spheroidal galaxy'

  82. Johnson, C.I., Rich, R.M., Kobayashi, C., Kunder, A., & Koch, A. 2014, AJ, 148, 87
    `Light, Alpha, and Fe-peak element abundances in the Galactic bulge'

  83. Kacharov, N., Bianchini, P., Koch, A., Frank, M.J., Martin, N.F., van de Ven, G., Puzia, T.H., McDonald, I., et 2 alii 2014 A&A, 567, 69:
    `A study of rotating globular clusters -- The case of the old, metal poor globular cluster NGC 4372'

  84. Koch, A., & McWilliam, A. 2014, A&A, 565, 23:
    `The chemical composition of a regular halo globular cluster: NGC 5897'

  85. Hendricks, B., Koch, A., Lanfranchi, G.A., Boeche, C., Walker, M., Johnson, C.I., Penarrubia, J., & Gilmore, G.F. 2014, ApJ, 785, 102:
    `The metal-poor knee in the Fornax dwarf Spheroidal galaxy'

  86. Pasquini, L., Koch, A., Smiljanic, R., Bonifacio, P., & Modigliani, A. 2014, A&A, 563, 3:
    `The Be-test in the Li-rich star #1657 of NGC 6397: evidence for Li-flash in RGB stars?'

  87. Collins, M.L.M., Chapman, S.C., Rich, R.M., Ibata, R.A., Martin, N.F., Irwin, M.J., Bate, N.F., Lewis, G.F., Penarrubia, J., Arimoto, N., Casey, C.M., Ferguson, A.M.N., Koch, A., et 2 alii 2014, ApJ, 783, 7:
    `The masses of Local Group dwarf Spheroidal galaxies: the death of the universal mass profile?'

  88. Koch, A., Hansen, T., Feltzing, S., & Wilkinson, M.I. 2014, ApJ, 780, 91:
    `A spectroscopic binary in the Hercules dwarf Spheroidal galaxy'

  89. Caffau, E., Bonifacio, P., Sbordone, L., Francois, P., Monaco, L., Spite, M., Plez, B., Cayrel, R., Christlieb, N., Clark, P.C., Glover, S., Klessen, R., Koch. A., et 4 alii 2013, A&A, 560, 71:
    `TOPoS: I. Survey design and analysis of the first sample'

  90. Kacharov, N., Koch, A., & McWilliam, A. 2013, A&A, 554, A81:
    `A comprehensive chemical abundance study of the outer halo globular cluster M 75'

  91. Koch, A., Feltzing, S., Adén, D., & Matteucci, F. 2013, A&A, 554, A5:
    `Neutron-capture element deficiency of the Hercules dwarf spheroidal galaxy'

  92. Collins, M.L.M., Chapman, S.C., Irwin, M.J., Rich, R.M., Ibata, R.A., Martin, N.F., Bate, N.F., Lewis, G.F., Penarrubia, J., Arimoto, N., Casey, C.M., Ferguson, A.M.N., Koch, A., et 2 alii 2013, ApJ, 768, 172:
    `A kinematic study of the Andromeda dwarf spheroidal system'

  93. Johnson, C.I., Rich., R.M., Kobayashi, C., Kunder, A., Pilachowski, C.A., Koch, A., & de Propris, R. 2013, ApJ, 765, 157:
    `Metallicity distribution functions, radial velocities, and alpha element abundances in three off-axis bulge fields'

  94. Caffau, E., Koch, A., Sbordone, L., et 19 alii 2013, AN, 334, 197:
    `Velocity and abundance precisions for future high-resolution spectroscopic surveys: a study for 4MOST'

  95. Lianou, S., Grebel, E.K., Da Costa, G.S., Rejkuba, M., Jerjen, H., & Koch, A. 2013, A&A, 550, 7:
    `Population gradients and photometric metallicities in early- and transition-type dwarf galaxies: clues from the Sculptor Group'

  96. Haschke, R., Grebel, E.K., Frebel, A., Duffau, S., Hansen, C.J., & Koch, A. 2012, AJ, 144, 88:
    `Chemical abundances of metal-poor RR Lyrae stars in the Magellanic Clouds'

  97. Koch, A., Burkert, A., Rich, R.M., Collins, M.L.M., Black, C.S., Hilker, M., & Benson, A. 2012, ApJL, 755, L13:
    `Threshing in Action -- The tidal disruption of a dwarf galaxy by the Hydra I Cluster'

  98. Salucci, P., Wilkinson, M.I., Walker, M.G., Gilmore, G.F., Grebel, E.K., Koch, A., Frigerio Martins, C., & Wyse, R.F.G. 2012, MNRAS, 420, 2034:
    `Dwarf spheroidal galaxy kinematics and spiral galaxy scaling laws'

  99. Rich, R.M., Collins, M.L.M., Black, C.S., Longstaff, F.M., Koch, A., Benson, A., & Reitzel, D.B. 2012, Nature, 482, 192:
    `A tidally distorted dwarf galaxy near NGC 4449'

  100. Kunder, A., Koch, A., Rich, R.M., et 13 alii 2012, AJ, 143, 57 :
    `The Bulge Radial Velocity Assay (BRAVA): II. Complete sample and data release'

  101. Lépine, S., Koch, A., Rich, R.M., & Kuijken, K. 2011, ApJ, 741, 100:
    `A first measurement of the proper motion of the Leo II dwarf spheroidal galaxy'

  102. Koch, A., & Caffau, E. 2011, A&A, 534, 52:
    `Sulphur in the metal poor globular cluster NGC 6397'

  103. Koch, A., Lind, K., & Rich, R.M. 2011, ApJL, 738, L29:
    `Discovery of a super-Li rich turn-off star in the metal poor globular cluster NGC 6397'

  104. Koch, A., & McWilliam, A. 2011, AJ, 142, 63:
    `A differential chemical element analysis of the metal poor globular cluster NGC 6397'

  105. Lianou, S., Grebel, E.K., & Koch, A. 2011, A&A, 531, 152:
    `Spectroscopic versus photometric metallicities: Dwarf spheroidal galaxies as a test case'

  106. De Propris, R., Rich, R.M., Kunder, A., Johnson, C.I., Koch, A., et 6 alii 2011, ApJL, 732, L36:
    `Separating the conjoined red clump in the Galactic Bulge: Kinematics and Abundances'

  107. Collins, M.L.M., Chapman, S.C., Ibata, R.A., Irwin, M.J., Rich, R.M., Ferguson, A.M.N., Lewis, G.F., Tanvir, N., & Koch, A. 2011, MNRAS, 413, 1548:
    `The kinematic identification of a thick disk in M31'

  108. Adén, D., Eriksson, K., Feltzing, S., Grebel, E.K., Koch, A., & Wilkinson, M.I. 2011, A&A, 525, 153:
    `A spectroscopic study of red-giant-branch stars in the Hercules dwarf spheroidal galaxy'

  109. Lianou, S., Grebel, E.K., & Koch, A. 2010, A&A, 521, A43 :
    `Dwarf galaxies in the M81 group - metallicity distributions and population gradients'

  110. Koch, A., & Côté, P. 2010, A&A, 517, A59:
    `Chemical abundances for the outer halo cluster Pal 4 from co-added high-resolution spectroscopy'

  111. Glatt, K., Grebel, E.K., & Koch, A. 2010, A&A, 517, A50:
    `Ages and luminosities of young SMC/LMC star clusters'

  112. Crnojevic, D., Grebel, E.K., & Koch, A. 2010, A&A, 516, A85 :
    `A close look at the Centaurus A group of galaxies: I. Metallicity distribution functions and population gradients in early type dwarfs'

  113. Koch, A., & McWilliam, A. 2010, AJ, 139, 2289:
    `A differential chemical abundance scale for the globular cluster M5'

  114. Koch, A., & Rich, R.M. 2010, AJ, 139, 2279:
    `A statistical analysis of the late type stellar content in the Andromeda halo'

  115. Ural, U., Wilkinson, M.I., Koch, A., et 7 alii 2010, MNRAS, 402, 1357:
    `Kinematic sub-populations in dwarf spheroidals'

  116. Adén, D., Wilkinson, M.I., Read, J.I., Feltzing, S., Koch, A., Gilmore, G.F., Grebel, E.K., & Lundström, I. 2009, ApJL, 706, L150:
    `A new low mass for the dwarf spheroidal galaxy in Hercules: the end of a common mass scale for the dwarfs?'

  117. Adén, D., Feltzing, S., Koch, A., et 8 alii 2009, A&A, 506, 1147:
    `A photometric and spectroscopic study of the new dwarf spheroidal galaxy in Hercules --- Metallicity, velocities and a clean list of RGB members'

  118. Koch, A., Côté, P., & McWilliam, A. 2009, A&A, 506, 729:
    `All quiet in the outer halo: chemical abundances in the globular cluster Pal 3'

  119. Glatt, K., Grebel, E.K., Gallagher, J.S., Nota, A., Sabbi, E., Sirianni, M., Clementini, G., Da Costa, G.S., Tosi, M., Harbeck, D., Koch, A., & Kayser, A., 2009, AJ, 138, 1403
    `Structural parameters of seven SMC intermediate-age and old star clusters'

  120. Howard, C.D., Rich, R.M., Clarkson, W., Mallery, R., Kormendy, J., De Propris, R., Robin, A.C., Fux, R., Reitzel, D.B., Zhao, H.S., Kuijken, K., & Koch, A. 2009, ApJL, 702, 153:
    `Kinematics at the edge of the Galactic bulge: Evidence of cylindrical rotation'

  121. Donato, F., Gentile, G., Salucci, P., Frigerio Martins, C., Wilkinson, M.I., Gilmore, G., Grebel, E.K., Koch, A., & Wyse, R.F.G 2009, MNRAS, 397, 1169:
    `A constant dark matter halo surface density in galaxies'

  122. Koch, A. 2009, AN, 330, 675:
    `Complexity in small-scale dwarf scale dwarf spheroidals (Ludwig Biermann Award lecture)'

  123. Quinn, D.P., Wilkinson, M.I., Irwin, M.J., Marshall, J., Koch, A., & Belokurov, V. 2009, MNRAS, 396, L11:
    `On the reported death of the Macho era'

  124. Koch, A., Wilkinson, M.I., Kleyna, J.T., Irwin, M., Zucker, D.B., Belokurov, V., Gilmore, G.F., Fellhauer, M., & Evans, N.W. 2009, ApJ, 690, 453,
    `A spectroscopic confirmation of the Boötes II dwarf Spheroidal'

  125. Koch, A., Rich, R.M., Reitzel, D.B, Martin, N., Ibata, R., Chapman, S., Majewski, S.R., Mori, M., Loh, Y.-S., Ostheimer, J., & Tanaka, M. 2008, ApJ, 689, 958,
    `Kinematic and chemical constraints on the formation of M31's inner spheroid'

  126. Howard, C.D. Rich, R.M., Koch, A., Reitzel, D.B., Zhao, H.S., & De Propris, R. 2008, ApJ, 688, 1060:
    `The Bulge Radial Velocity Assay (BRAVA): I. Sample selection and a rotation curve'

  127. Koch, A., McWilliam, A., Grebel, E.K., Zucker, D.B., & Belokurov, V. 2008, ApJL, 688, L13
    `The highly unusual chemical composition of the Hercules dwarf spheroidal galaxy'

  128. Chapman, S.C., Ibata, R., Irwin, M., Koch, A., et 11 alii, 2008, MNRAS, 390, 1437
    `The kinematic footprints of five new giant streams in Andromeda's halo'

  129. Brown, T.M., Beaton, R., Chiba, M., Ferguson, H.C., Gilbert, K.M., Guhathakurta, P., Iye, M., Kalirai, J., Koch, A., et 8 alii 2008, ApJL, 685, 121,
    `The extended star formation history of the Andromeda spheroid at thirty five kiloparsecs on the minor axis'

  130. Glatt, K., Grebel, E.K., Sabbi, E., Gallagher, J.S., Nota, A., Sirianni, M., Clementini, G., Tosi, M., Harbeck, D., Koch, A., Kayser, A., & Da Costa, G.S. 2008, AJ, 136, 1703
    `Age determinations of six intermediate-age SMC star clusters with HST/ACS'

  131. Koch, A., Grebel, E.K., Gilmore, G.F., Wyse, R.F.G., Kleyna, J.T., Harbeck, D.R., Wilkinson, M.I., & Evans, N.W. 2008, AJ, 135, 1580,
    `Complexity on small scales III: Iron and alpha-element abundances in the Carina dwarf spheroidal galaxy'

  132. Koch, A., & McWilliam, A. 2008, AJ, 135, 1551,
    `A new abundance scale for the globular cluster 47 Tuc'

  133. Glatt, K., Gallagher, J.S., Grebel, E.K., Nota, A., Sabbi, E., Sirianni, M., Clementini, G., Tosi, M., Harbeck, D.R., & Koch, A., 2008, AJ, 135, 1106,
    `An accurate age determination for the SMC star cluster NGC121 with HST/ACS'

  134. Coleman, M.G., Jordi, K., Rix, H.-W., Grebel, E.K., & Koch, A. 2007, AJ, 134, 1938,
    `A wide-field view of Leo II - A structural analysis using the SDSS'

  135. Koch, A., Kleyna, J.T., Wilkinson, M.I., Grebel, E.K., Gilmore, G.F., Evans, N.W., Wyse, R.F.G., & Harbeck, D.R. 2007, AJ, 134, 566,
    `Stellar kinematics in the Leo II dwarf spheroidal galaxy - Another brick in the wall'

  136. Gilmore, G., Wilkinson, M.I., Wyse, R.F.G., Kleyna, J.T., Koch, A., Evans, N.W., & Grebel, E.K. 2007, ApJ, 663, 948,
    `The observed properties of dark matter on small spatial scales'

  137. Koch, A., Wilkinson, M.I., Kleyna, J.T., Gilmore, G.F., Grebel, E.K., Mackey, D.A., Evans, N.W., & Wyse, R.F.G. 2007, ApJ, 657, 241
    `Stellar kinematics and metallicities in the Leo I dwarf spheroidal galaxy - wide field implications for galactic evolution'

  138. Koch, A., Grebel, E.K., Kleyna, J.T., Wilkinson, M.I., Harbeck, D.R., Gilmore, G.F., Wyse, R.F.G., & Evans, N.W. 2007, AJ, 133, 270
    `Complexity on small scales II: Metallicities and ages in the Leo II dwarf spheroidal galaxy'

  139. Koch, A. & Grebel, E.K. 2006, AJ, 131, 1405
    `The anisotropic distribution of M31 satellite galaxies: A polar great plane of early-type companions'

  140. Wyse, R.F.G., Gilmore, G.F., Norris, J.E., Wilkinson, M.I., Kleyna, J.T., Koch, A., Evans, N.W., & Grebel, E.K. 2006, ApJ, 639, L13
    `Further evidence for a merger origin for the Thick disk: Galactic stars along line-of-sight to dwarf spheroidal galaxies'

  141. Koch, A., Grebel, E.K., Wyse., R.F.G., Kleyna, J.T., Wilkinson, M.I., Harbeck, D., Gilmore, G.F., & Evans, N.W., 2006, AJ, 131, 895
    `Complexity on small scales: The metallicity distribution of the Carina dwarf spheroidal galaxy'

  142. Harbeck, D., Gallagher, J.S., Grebel, E.K., Koch, A., & Zucker, D.B. 2005, ApJ, 623, 159
    `Andromeda IX: Properties of the faintest M 31 dwarf satellite galaxy'

  143. Koch, A., Grebel, E.K., Odenkirchen, M., Martínez-Delgado, D., & Caldwell, J.A.R. 2004, AJ, 128, 2274
    `Mass segregation in the globular cluster Palomar 5 and its tidal tails'

  144. Koch, A., Odenkirchen, M., Grebel, E.K., & Caldwell, J.A.R. 2004, AN, 325, 299
    `A calibration map for Wide Field Imager photometry'

  145. Koch, A., & Edvardsson, B. 2002, A&A, 381, 500
    `Europium abundances in F and G disk dwarfs'

Non-refereed articles & conference contributions

  1. Rich, R.M., Brosch, N., Bullock, J., Burkert, A., Collins, M., de Groot, L., Kennefick, J., Koch, A., et 2 alii 2017, IAUS 321, 186:
    `The Halos and Environments of Nearby Galaxies (HERON) Survey'

  2. Hyde, E., Keller, S., Zucker, D., Ibata, R., Siebert, A., Lewis, G., Penarrubia, J., Irwin, M., Gilmore, G., Lane, R., Koch, A., et 3 alii 2015, ADASS conference:
    `Significant populations, lessons learnt from the Sagittarius Stream'

  3. Crnojevic, D., Grebel, E.K., Ferguson, A.M.N., Koch, A., et 8 alii 2015, MSAIS, 86, 302:
    `Galaxy evolution through resolved stellar populations in the nearby Centaurus A group'

  4. Rich, R.M., Johnson, C., Koch, A., et 9 alii 2015, in ``Chemical and dynamical evolution of the Milky Way and Local Group'':
    `Composition and Kinematics of the Bulge'

  5. Nagasawa, D.Q., Marshall, J.L., Li, T., Sneden, C.S., Lepine, S., Schlesinger, K., Johnson, J., McWilliam, A., Koch, A., et 2 alii 2015, BAAS, :
    `Measuring M dwarf metallicities using common proper motion F/G/K+M-dwarf wide separation binaries'

  6. Caffau, E., Gallagher, A., Bonifacio, P., Cayrel, R., Christlieb, N., Clark, P., Francois, P. Glover, S., Klessen, R.S., Koch, A., et 8 alii 2014, Proc. of Science, in press:
    ` The first generation of stars'

  7. de Jong, R., ..., Koch, A., et 101 alii 2014, SPIE, 9147:
    ` 4MOST -- 4-metre Multi-Object Spectroscopic Telescope'

  8. Depagne, E., ..., Koch, A., et al. 2014, Proc. of the workshop ``Asteroseismology of stellar populations in the Milky Way'' (Sesto, 22-26 July 2013), Astrophysics and Space Science Proceedings, (eds. A. Miglio, L. Girardi, P. Eggenberger, J. Montalban)
    ` 4MOST -- 4m Multi-Object Spectroscopic Telescope'

  9. Clarkson, W.I., Johnson, C.I., Kunder, A., Michael, S., Young, M., Pilachowski, C.A., Belanger, Z., Clyne, E., Ivezic, Z., Ibata, R., Irwin, M., de Propris, R., Koch, A., et 3 alii 2014, BAAS, 224, 319, 01:
    ` Blanco DECam Bulge Survey (BDBS): Current Status and Progress'

  10. Caffau, E., Sbordone, L., Bonifacio, P., Cayrel, R., Christlieb, N., Clark, P.C., Fran\c cois, P., Glover, S., Klessen, R., Koch. A., et 7 alii 2014, MSAIS, in press.:
    ` TOPoS: chemical study of extremely metal-poor stars'

  11. Hsuy, T., Johnson, C.I., Kunder, A., Rich, R.M., de Propris, R., & Koch, A. 2014, BAAS, 223, 442.04:
    ` Searching for stellar sub-structure in the Galactic bulge'

  12. Clarkson, W.I., Rich, R. M., Johnson, C.I., Kunder, A., Michael, S., Young, M., Pilachowski, C.A., Ivezic, Z., Ibata, R., Irwin, M., de Propris, R., Koch, A., et 3 alii 2014, BAAS, 223, 346, 19:
    ` Blanco DECam Bulge Survey (BDBS): Status and Early Results'

  13. Kacharov, N., Koch, A., Johnson, C.I., Ruchti, G., & Martin, N.F. 2013, AN, submitted:
    ` Kinematics and chemical elements of the very metal poor globular cluster GC 4372'

  14. Kacharov, N., & Koch, A. 2013, MSAIS, 84, 224:
    `An abundance study of the outer halo globular cluster M 75'

  15. Koch, A., Frank, M., Feltzing, S., Adén, D., Kacharov, N., & Wilkinson, M.I. 2013, MSAIS, 84, 67:
    `An intermediate-band photometric study of the ``Globular Cluster'' NGC 2419'

  16. Black, C.S., Koch, A., Rich, R.M., Longstaff, F.A., Collins, M.L.M., Lisker, T., & Janz, J. 2013, BAAS, 221, 436.01
    `A new, smaller size for the low-surface brightness Virgo Cluster galaxy VCC 1661'

  17. Hyde, E.A., Zucker, D.B., Keller, S., Siebert, A., Ibata, R., Penarrubia, J., Martell, S.L., Lewis, G., Irwin, M., & Koch, A. 2013, BAAS, 221, 425.03:
    `Selecting Sagittarius: A study of Sagittarius dwarf members throughout the Milky Way Galactic halo'

  18. Schaul, D., Rich, R.M., Black, C.S., Reitzel, D.B., Collins, M.L.M., Koch, A., Longstaff, F.A., & Benson, A. 2013, BAAS, 221, 146.01:
    `The local Universe at 30 mag/sq. arcsec : Extended stellar halos around near-by galaxies'

  19. de Jong, R., ..., Koch, A., et 79 alii 2012, SPIE, 8446:
    `4MOST -- 4-metre Multi-Object Spectroscopic Telescope'

  20. Koch, A., Matteucci, F., & Feltzing, S. 2012, in `First Stars IV -- from Hayashi to the future', M. Umemura & K. Omukai (eds.), ASP Conf. Proc. 1480, 190:
    `Small-scale hero: massive star enrichment in the Hercules dwarf spheroidal'

  21. Kacharov, N., & Koch, A. 2012, in `First Stars IV -- from Hayashi to the future', M. Umemura & K. Omukai (eds.), ASP Conf. Proc. 1480, 385:
    `Precise abundance analysis of the outer halo globular cluster M75'

  22. Hyde, E., Zucker, D.B., Irwin, M., Penarrubia, J., & Koch, A. 2012, in `The 3rd Subaru International Conference -- Galactic archaeology', ASP Conf. Ser., 458, 325:
    `Hermes and the Sagittarius dwarf: a low metallicity goldmine?'

  23. Crnojevic, D., Grebel, E.K., Ferguson, A.M.N., Cole, A.A., Koch, A., et 4 alii 2012, in `The 3rd Subaru International Conference -- Galactic archaeology', ASP Conf. Ser., 458, 321:
    `How unique is the Local Group? A comparison to the nearby Centaurus A group'

  24. Koch, A., Lind, K., Thompson, I.B., & Rich, R.M. 2012, in `Lithium in the Cosmos', MSAIS, 22, 79:
    `A super-Li rich turnoff star in NGC 6397 - The puzzle persists'

  25. Koch, A. 2012, ANS:
    `Hunting chemical oddballs in Galactic halo structures'

  26. Koch, A., Kunder, A., Rich, R.M., et 9 alii 2012, ANS
    `The Complete Sample and Data Release of The Bulge Radial Velocity Assay (BRAVA)'

  27. Rich, R.M., Kunder, A.M., der Propris, R., Koch, A., et 11 alii 2012, BAAS, 219, 252.02:
    `The Bulge Radial Velocity Assay (BRAVA): Final Results, A New High Velocity Star, and Public Data Release'

  28. Johnson, C.,I., Rich, R.M., Kunder, A.M., de Propris, R., Kobayashi, C., & Koch, A. 2012, BAAS, 219, 152.11:
    `The Chemical Composition of RGB Stars in Off-Axis Bulge Field'

  29. de Jong, R., Chiappini, C., Schnurr, O., & The 4MOST Consortium 2012, in `Assembling the puzzle of the Milky Way', C.Reylé, A.Robin and M.Schultheis (eds.), EPJ Web of Conferences, 19, 09004:
    `4MOST -- 4-meter Multi-Object Spectroscopic Telescope'

  30. Koch, A., Lépine, S., & Çalιşkan, Ş. 2012, in `Assembling the puzzle of the Milky Way', C.Reylé, A.Robin and M.Schultheis (eds.), EPJ Web of Conferences, 19, 03002:
    `The puzzling assembly of the Milky Way halo -- contributions from dwarf Spheroidals and globular clusters'

  31. Kunder, A.M., de Propris, R., Rich, R.M., Koch, A., et 12 alii, BAAS, 43, 241.12:
    `The Bulge Radial Velocity Assay: New Observations and Results'

  32. Hyde, E., Zucker, D.B., Penarrubia, J., Irwin, M., Lane, R., Lewis, G.F., Gilmore, G., & Koch, A., BAAS, 43, 152.28:
    `Was the Progenitor of the Sagittarius Stream a Disc Galaxy? Recent Results & Observations'

  33. Lianou, S., Grebel, E.K., & Koch, A. 2010, in `A Universe of dwarf galaxies -- Observations, theories, simulations', M. Koleva, Ph. Prugniel and I. Vauglin (eds), EAS Publ. Ser., 48, 91:
    `M81 group dSphs: metallicity distribution functions and gradients'

  34. Crnojevic, D., Grebel, E.K., Cole, A.A., Koch, A., Rejkuba, M., Da Costa, G., & Jerjen, H. 2010, in `A Universe of dwarf galaxies -- Observations, theories, simulations', M. Koleva, Ph. Prugniel and I. Vauglin (eds), EAS Publ. Ser., 48, 51:
    `Dwarf galaxies beyond our doorstep: the Centaurus A group'

  35. Lianou, S., Grebel, E.K., & Koch, A. 2010, in `Advances in Hellenic Astronomy during the IYA09', K. Tsingaros, D. Hatzidimitriou, and T. Matsakos (eds.), ASP Conf. Ser., 424, 242:
    `Dwarf spheroidals in the M81 galaxy group'

  36. Rich, R.M., Shen, J., Howard, C.d., de Propris, R., Koch, A., & Reitzel, D.B. 2010, BAAS, 215, 321.06:
    `Striking Agreement Between Galactic Bulge Kinematics from the BRAVA Survey, and an N-body Bar'

  37. Koch, A., Adén, D., Grebel, E.K., & Feltzing, S. 2010, in `Chemical abundances in the Universe: Connecting first stars to planets', K. Cunha, M. Spite, B. Barbuy (eds.), IAUS 265:
    `Complexity in small-scale dwarf spheroidal galaxies'

  38. Quinn, D.P., Wilkinson, M.I., Irwin, M.J., Marshall, J., Koch, A., & Belokurov, V. 2010, in `Binaries -- keys to comprehension of the Universe', A. Prsa, M. Zejda (eds.), ASP Conf. Ser., 435, 453:
    `Dark Matter Constraints from Wide Halo Binary Stars'

  39. Lianou, S., Grebel, E.K., & Koch, A. 2010, in `Stellar populations: Planning for the next decade', G.R. Bruzual, S. Charlot (eds.), IAUS 262, 115:
    `Early-type dwarf galaxies in the M81 group'

  40. Crnojevic, D., Grebel, E.K., & Koch, A. 2009, AN, 330, 1001:
    `Evolution of dwarf galaxies in the Centaurus A group'

  41. Lianou, S., Grebel, E.K., & Koch, A. 2009, AN, 330, 995:
    `Dwarf spheroidal galaxies in the M81 group of galaxies'

  42. Koch, A. 2009, Rev. Mod. Ast., 21, 9
    `Complexity in small-scale dwarf spheroidals' (Ludwig Biermann award lecture)
  43. Glatt, K., Grebel, E.K., & Koch, A. 2009, in FONDAP-ESO conference, `Globular Clusters -- Guides to Galaxies', T. Richtler, S. Larsen (eds.), ESO/Springer Verlag, 157:
    `Star clusters in the Small Magellanic Cloud',
  44. Kayser, A., Grebel, E.K., Koch, A., Cole, A., Harbeck, D.R., Gallagher, J.S., & Da Costa, G.S. 2009, in FONDAP-ESO conference, `Globular Clusters -- Guides to Galaxies', T. Richtler, S. Larsen (eds.), ESO/Springer Verlag, 119 (astro-ph/0607047):
    `The Age-Metallicity relation of the Small Magellanic Cloud'

  45. Gilmore, G., Zucker, D., Wilkinson, M., Wyse, R.F.G., Belokurov, V., Kleyna, J., Koch, A., Evans, N.W., & Grebel, E.K. 2008, in `Panoramic views of galaxy formation and evolution', T. Kodama, T. Yamada, and K. Aoki (eds.), ASP Conf. Ser., 399, 453 (astro-ph/0804.1919):
    `What is a galaxy? How cold is Cold Dark Matter? Recent progress in near field cosmology'

  46. Reitzel, D.B., Koch, A., Rich, R.M., et 8 alii, 2007, BAAS, 39, 897:
    Kinematic and chemical constraints on the formation of M31's inner halo structures
  47. Koch, A., McWilliam, A., & Wilkinson, M.I. 2007, BAAS, 39, 896:
    `The first chemical abundance study of the Hercules dwarf spheroidal galaxy'

  48. Glatt, K., Glatt, K., Gallagher, J.S., Grebel, E.K., Nota, A., Sabbi, E., Sirianni, M., Clementini, G., Tosi, M., Harbeck, D.R., & Koch, A. 2007, BAAS, 39, 836:
    `An accurate age determination for the SMC star cluster NGC121 with HST/ACS'

  49. Koch, A., Rich, R.M., Reitzel, D.B., et 8 alii, 2007, AN, 328, 653 :
    `Kinematic and chemical constraints on the formation of M31's inner halo structures'

  50. Koch, A., McWilliam, A., Grebel, E.K., Wyse, R.F.G., Gilmore, G.F. et 7 alii 2007, AN, 328, 652:
    `Chemical abundances in the Carina dwarf spheroidal galaxy'

  51. Koch, A., Rich, R.M., Reitzel, D.B., et 7 alii 2007, in `The Milky Way halo -- Stars and gas', K.S. de Boer, P.Kroupa (eds.):
    `Kinematic and chemical constraints on the formation of M31's inner halo structures'

  52. Howard, C.D., Reitzel, D.B., Rich, R.M., Koch, A., & Zhao, H.S. 2007, in `The Milky Way halo -- Stars and gas', K.S. de Boer, P.Kroupa (eds.):
    `The Bulge Radial Velocity Assay [BRAVA]: Techniques and Results'

  53. Koch, A., McWilliam, A., Grebel, E.K., Wyse, R.F.G., Gilmore, G.F. et 7 alii 2007, in `The Milky Way halo -- Stars and gas', K.S. de Boer, P.Kroupa (eds.):
    `Chemical abundances in the Carina dwarf spheroidal galaxy'

  54. Koch, A., Wilkinson, M.I., Kleyna, J.T., Gilmore, G.F., Grebel, E.K., Evans, N.W., & Wyse, R.F.G. 2007, in `The Milky Way halo -- Stars and gas', K.S. de Boer, P.Kroupa (eds.):
    `Stellar kinematics in the remote Leo I and II dwarf spheroidals'

  55. Kayser, A. Grebel, E.K., Harbeck, D.R., Cole, A.A., Koch, A., Glatt, K., Gallagher, J.S., & Da Costa, G.S 2007, in `Stellar Populations as building blocks of galaxies', R.F.Peletier, A.Vazdekis (eds.), IAUS 241, 351:
    `A spectroscopy-based Age-Metallicity Relation of the SMC'

  56. Reitzel, D.B., Howard, C.D., Rich, R.M., Koch, A., & Zhao, H.S. 2007, BAAS, 38, 1149
    `The line of sight velocity distribution of the Galactic bulge'

  57. Rich, R.M., Brown, T.M., Reitzel, D.B., Ferguson, H., Koch, A., et 11 alii 2007, BAAS, 38, 1155
    `Keck/Deimos Spectroscopy of Distant M31 fields with Deep HST Imaging'

  58. Gilmore, G., Wilkinson, M., Kleyna, J., Koch, A., Evans, W., Wyse, R.F.G., & Grebel, E.K. 2006, in 7th UCLA Symposium, Sources and Detection of Dark Matter and Dark Energy in the Universe, eds. NN, in press (astro-ph/0608528)
    `Observed Properties of Dark Matter: dynamical studies of dSph galaxies',
  59. Wilkinson, M.I, Kleyna, J.T, Gilmore, G.F., Evans, N.W., Koch, A., Grebel, E.K., Wyse, R.F.G., & Harbeck, D.R. 2006, The Messenger, 124, 25
    `Probing the dark matter content of Local Group dwarf spheroidal galaxies with FLAMES'

    ,
  60. Koch, A., Grebel, E.K., Wyse., R.F.G., Kleyna, J.T., Wilkinson, M.I., Harbeck, D., Gilmore, G.F., & Evans, N.W. 2006, The Messenger, 123, 38
    `The age-metallicity degeneracy in the dwarf spheroidal Carina as seen by FLAMES'

  61. Koch, A., Wilkinson, M.I., Kleyna, J.T., Gilmore, G.F., Evans, N.W., & Grebel, E.K. 2005, BAAS, 37, 1345
    `Stellar kinematics in the Leo I dwarf spheroidal galaxy -- wide field implications for galactic mass profiles'

    ,
  62. Grebel, E.K., Koch, A., & Sambhus, N. 2005, BAAS, 37, 1346
    `Satellite Anisotropies: A Polar Great Plane of M 31 Early-Type Companions'

  63. Wyse, R.F.G., Gilmore, G.F., Norris, J.E., Wilkinson, M.I., Kleyna, J.T., Koch, A., Evans, N.W., & Grebel, E.K. 2005, BAAS, 37, 1368
    `Further evidence for a merger origin for the Thick disk: Galactic stars along line-of-sight to dwarf spheroidal galaxies'

  64. Wilkinson, M.I., Kleyna, J.T., Evans, N.W., Gilmore, G.F., Read, J.I., Koch, A., Grebel, E.K., & Irwin, M. 2005,
    in `Mass Profiles and Shapes of Cosmological Structures', G. Mamon, F. Combes, C. Deffayet, B. Fort (eds.), EAS Publication Series, 20, 105
    `The internal kinematics of dwarf spheroidal galaxies'

  65. Glatt, K., Grebel, E.K., & Koch, A. 2005, AN, 326, 651
    `Star clusters in the Large Magellanic Cloud'

  66. Koch, A., Wilkinson, M.I., Grebel, E.K., Harbeck, D., Kleyna, J.T., Wyse, R., Gilmore, G.F., & Evans, N.W. 2005, IAUC, 198, 134
    `The chemical evolution of subpopulations in the Carina dwarf spheroidal'

  67. Wilkinson, M.I., Kleyna, J.T., Evans, N.W., Gilmore, G.F., Grebel, E.K., Koch, A., Read, J., Wyse, R., & Young, R. 2005, IAUC, 198, 240
    Substructure in Dwarf Spheroidals - a Star Cluster Connection?'

  68. Harbeck, D., Gallagher, J.S., Grebel, E.K., Koch, A., & Zucker, D.B. 2004, AAS, 205, 9301
    `WIYN observations of And IX: A metal poor, low-mass dSph Galaxy'

  69. Koch, A., Grebel, E.K., Harbeck, D., Wilkinson, M.I., Kleyna, J.T., Gilmore, G.F., Wyse, R.F.G., &, Evans, N.W. 2004,
    ESO-Arcetri-workshop on "Chemical Abundances and Mixing in Stars", eds. L. Pasquini & S. Randich (Springer Verlag), 249 (astro-ph/0410435)
    `Chemical Evolution in the Carina dSph'

  70. Koch, A., Grebel, E.K., Harbeck, D., Wilkinson, M.I., Kleyna, J.T., Gilmore, G.F., Wyse, R.F.G., &, Evans, N.W. 2004, ANS, 325, 44
    `The Metallicity and Age Distribution of the Carina Dwarf Spheroidal Galaxy'

  71. Koch, A., & Grebel, E.K. 2004, STScI May 2004 Symposium, M. Livio (ed.), Cambridge University Press (astro-ph/0407212)
    `R-process and α-elements in the Galactic disk: Kinematic correlations'

  72. Koch, A., Odenkirchen, M., Grebel, E.K., & Caldwell, J.A.R. 2004, The Eso Messenger, 115, 37
    `Calibrating spatial gradients: The case of Wide Field Imager Photometry'

  73. Koch, A., Odenkirchen, M., Grebel, E.K., Martínez-Delgado, D., & Caldwell, J.A.R. 2004, A.S.P. Conf Ser., 327, 333 , F.Prada, D.Martínez-Delgado & T.J. Mahoney eds.,
    `The luminosity function of Palomar 5 and its tidal tails'

  74. Koch, A., Odenkirchen, M., Caldwell, J.A.R., & Grebel, E.K. 2003, ANS, 324, 144
    `A retrospective of r-process and α-element abundances in the Galactic disk - correlations with rotational velocity'

  75. Koch, A., Odenkirchen, M., Caldwell, J.A.R., & Grebel, E.K. 2003, ANS, 324, 144
    `Mass segregation in the low-concentration globular cluster Palomar 5'

  76. Koch, A., Odenkirchen, M., Caldwell, J.A.R., & Grebel, E.K. 2002, ANS, 324, 95
    `A calibration map for the Wide Field Imager'

  77. Koch, A., Odenkirchen, M., Caldwell, J.A.R., & Grebel, E.K. 2002, ANS, 324, 79
    `The mass function of the globular cluster Palomar 5 and its tidal tails'

Theses

  1. Koch, A. 2014, Habilitation thesis, University of Heidelberg:
    `Formation histories of galactic halos via chemical and dynamical analyses of near-by stellar systems'
  2. Koch, A. 2007, Dissertation Summary, PASP, 119, 37
    'Chemical and Kinematical Evolution in nearby Dwarf Spheroidal Galaxies'


  3. Koch, A. 2006, Ph.D. thesis, University of Basel,
    'Chemical and Kinematical Evolution in nearby Dwarf Spheroidal Galaxies'


  4. Koch, A. 2003, Diploma thesis, University of Heidelberg (gzipped-postscript)
    'The luminosity function of the globular cluster Palomar 5 and its tidal tails'

    ,

Press releases

Popular (mostly in German)

  • 'In Sternen geboren', Physik Journal, Feb. 2011, S.27
  • 'Eine dünne Scheibe aus Satellitengalaxien um M 31', Sterne und Weltraum, Apr. 2006, S.20
  • 'In Schnee und Wüste', UNI NOVA, Wissenschaftsmagazin der Universität Basel, Jul. 2005, 100, S. 13
  • 'Die Massenverteilung in einem zerrissenen Kugelsternhaufen', Sterne und Weltraum , Mar. 2005, S.19
  • 'F. Melia: The black hole at the center of our galaxy', (Book review), Sterne und Weltraum, Aug. 2004, S.89





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