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Dr Andreas Koch

Formerly at Lancaster University

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  1. Published

    Young star clusters in the SMC

    Glatt, K., Grebel, E. K. & Koch, A., 2009, Globular Clusters: Guides to Galaxies. Richtler, T. & Larsen, S. (eds.). Springer, p. 119-120 2 p. (Eso Astrophysics Symposia).

    Research output: Contribution in Book/Report/Proceedings - With ISBN/ISSN › Chapter

  2. Published

    What Is a galaxy? How cold Is cold dark matter? Recent progress in near field cosmology

    Gilmore, G., Zucker, D. B., Wilkinson, M., Wyse, R. F. G., Belokurov, V., Kleyna, J., Koch, A., Evans, N. W. & Grebel, E. K., 2008, Panoramic Views of Galaxy Formation and Evolution. Kodama, T., Yamada, T. & Aoki, K. (eds.). p. 453-456 4 p. (ASP Conference Series; vol. 399).

    Research output: Contribution in Book/Report/Proceedings - With ISBN/ISSN › Conference contribution/Paper › peer-review

  3. Published

    Was the progenitor of the Sagittarius Stream a disc galaxy? Recent results & observations

    Hyde, E. A., Zucker, D. B., Peñarrubia, J., Irwin, M., Lane, R., Lewis, G. F., Gilmore, G. & Koch, A., 2011, In: Bulletin of the American Astronomical Society. 217, 152.28.

    Research output: Contribution to Journal/Magazine › Meeting abstract

  4. Published

    Velocity and abundance precisions for future high-resolution spectroscopic surveys: a study for 4MOST

    Caffau, E., Koch, A., Sbordone, L., Sartoretti, P., Hansen, C. J., Royer, F., Leclerc, N., Bonifacio, P., Christlieb, N., Ludwig, H. G., Grebel, E. K., Jong, R. S. D., Chiappini, C., Walcher, J., Mignot, S., Feltzing, S., Cohen, M., Minchev, I., Helmi, A., Piffl, T., & 2 othersDepagne, E. & Schnurr, O., 1/03/2013, In: Astronomical Notes / Astronomische Nachrichten. 334, 3, p. 197-216 20 p.

    Research output: Contribution to Journal/Magazine › Journal article › peer-review

  5. Published

    Triangulum II: a very metal-poor and dynamically hot stellar system

    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., 5/02/2016, In: The Astrophysical Journal. 818, 1, 7 p., 40.

    Research output: Contribution to Journal/Magazine › Journal article › peer-review

  6. Published

    TOPoS: III. An ultra iron-poor CEMP multiple system

    Caffau, E., Bonifacio, P., Spite, M., Spite, F., Monaco, L., Sbordone, L., Francois, P., Gallagher, A., Plez, B., Zaggia, S., Ludwig, H-G., Cayrel, R., Koch, A., Steffen, M., Salvadori, S., Klessen, R. S., Glover, S. & Christlieb, N., 11/2016, In: Astronomy and Astrophysics. 595, 6 p., L6.

    Research output: Contribution to Journal/Magazine › Journal article › peer-review

  7. Published

    TOPoS: on the bimodality of carbon abundance in CEMP stars Implications on the early chemical evolution of galaxies

    Bonifacio, P., Caffau, E., Spite, M., Limongi, M., Chieffi, A., Klessen, R. S., Francois, P., Molaro, P., Ludwig, H-G., Zaggia, S., Spite, F., Plez, B., Cayrel, R., Christlieb, N., Clark, P. C., Glover, S. C. O., Hammer, F., Koch, A., Monaco, L., Sbordone, L., & 1 othersSteffen, M., 07/2015, In: Astronomy and Astrophysics. 579, 20 p., A28.

    Research output: Contribution to Journal/Magazine › Journal article › peer-review

  8. Published

    TOPoS: I. Survey design and analysis of the first sample

    Caffau, E., Bonifacio, P., Sbordone, L., Francois, P., Monaco, L., Spite, M., Plez, B., Cayrel, R., Christlieb, N., Clark, P., Glover, S., Klessen, R., Koch, A., Ludwig, H. -G., Spite, F., Steffen, M. & Zaggia, S., 6/12/2013, In: Astronomy and Astrophysics. 560, 9 p., A71.

    Research output: Contribution to Journal/Magazine › Journal article › peer-review

  9. Published

    Threshing in action: the tidal disruption of a dwarf galaxy by the Hydra I cluster

    Koch, A., Burkert, A., Rich, R. M., Collins, M. L. M., Black, C. S., Hilker, M. & Benson, A. J., 25/07/2012, In: Astrophysical Journal Letters. 755, 1, 7 p., L13.

    Research output: Contribution to Journal/Magazine › Journal article › peer-review

  10. Published

    The puzzling assembly of the Milky Way halo: contributions from dwarf Spheroidals and globular clusters

    Koch, A., Lépine, S. & Çalışkan, Ş., 2012, In: EPJ Web of Conferences. 19, 7 p., 03002.

    Research output: Contribution to Journal/Magazine › Journal article

  11. Published

    The observed properties of dark matter on small spatial scales

    Gilmore, G., Wilkinson, M. I., Wyse, R. F. G., Kleyna, J., Koch, A., Wyn Evans, N. & Grebel, E. K., 10/07/2007, In: The Astrophysical Journal. 663, 2, p. 948-959 12 p.

    Research output: Contribution to Journal/Magazine › Journal article › peer-review

  12. Published

    The metal-poor knee in the Fornax dwarf spheroidal galaxy

    Hendricks, B., Koch, A., Lanfranchi, G. A., Boeche, C., Walker, M., Johnson, C. I., Penarrubia, J. & Gilmore, G., 1/04/2014, In: The Astrophysical Journal. 785, 2, 9 p., 102.

    Research output: Contribution to Journal/Magazine › Journal article › peer-review

  13. Published

    The metallicity and age distribution of the Carina dwarf spheroidal galaxy

    Koch, A., Grebel, E. K., Harbeck, D., Wilkinson, M. I., Kleyna, J., Gilmore, G., Wyse, R. F. G. & Evans, N. W., 2004, In: Astronomical Notes / Astronomische Nachrichten. 325, S1, p. 44 1 p.

    Research output: Contribution to Journal/Magazine › Meeting abstract

  14. Published

    The masses of local group dwarf spheroidal galaxies: the death of the universal mass profile

    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., Peñarrubia, J., Arimoto, N., Casey, C. M., Ferguson, A. M. N., Koch, A., McConnachie, A. W. & Tanvir, N., 6/02/2014, In: The Astrophysical Journal. 783, 1, 14 p., 7.

    Research output: Contribution to Journal/Magazine › Journal article › peer-review

  15. Published

    The mass function of the globular cluster Palomar 5 and its tidal tails

    Koch, A., Odenkirchen, M., Caldwell, J. A. R. & Grebel, E. K., 2003, In: Astronomical Notes / Astronomische Nachrichten. 324, S2, p. 79 1 p.

    Research output: Contribution to Journal/Magazine › Meeting abstract

  16. Published

    The luminosity function of the globular cluster Palomar 5 and its tidal tails

    Koch, A., 2003, University of Heidelberg.

    Research output: Thesis › Master's Thesis

  17. Published

    The luminosity function of Palomar 5 and Its tidal tails

    Koch, A., Odenkirchen, M., Grebel, E. K., Martinez-Delgado, D. & Caldwell, J. A. R., 2004, In: ASP Conference Series. 327, p. 333-336 4 p.

    Research output: Contribution to Journal/Magazine › Journal article

  18. Published

    The local universe at 30 mag/sq. arcsec: extended stellar halos around near-by galaxies

    Schaul, D., Rich, R. M., Black, C. S., Reitzel, D. B., Collins, M. L. M., Koch, A., Longstaff, F. A. & Benson, A., 2013, In: Bulletin of the American Astronomical Society. 221, 146.01.

    Research output: Contribution to Journal/Magazine › Meeting abstract

  19. Published

    The line of sight velocity distribution of the Galactic bulge

    Reitzel, D. B., Howard, C. D., Rich, R. M., Koch, A. & Zhao, H., 2007, In: Bulletin of the American Astronomical Society. 38, p. 1149

    Research output: Contribution to Journal/Magazine › Meeting abstract

  20. Published

    The kinematic identification of a thick stellar disc in M31

    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., 21/05/2011, In: Monthly Notices of the Royal Astronomical Society. 413, 3, p. 1548-1568 21 p.

    Research output: Contribution to Journal/Magazine › Journal article › peer-review

  21. Published

    The kinematic footprints of five stellar streams in Andromeda's halo

    Chapman, S. C., Ibata, R. A., Irwin, M., Koch, A., Letarte, B., Martin, N., Collins, M., Lewis, G. F., McConnachie, A., Peñarrubia, J., Rich, R. M., Trethewey, D., Ferguson, A., Huxor, A. & Tanvir, N., 11/11/2008, In: Monthly Notices of the Royal Astronomical Society. 390, 4, p. 1437-1452 16 p.

    Research output: Contribution to Journal/Magazine › Journal article › peer-review

  22. Published

    The internal kinematics of dwarf spheroidal galaxies

    Wilkinson, M. I., Kleyna, J., Evans, N. W., Gilmore, G., Read, J. I., Koch, A., Grebel, E. K. & Irwin, M., 2006, In: EAS Publications Series. 20, p. 29-32 4 p.

    Research output: Contribution to Journal/Magazine › Journal article

  23. Published

    The highly unusual chemical composition of the Hercules dwarf spheroidal galaxy

    Koch, A., McWilliam, A., Grebel, E. K., Zucker, D. B. & Belokurov, V., 3/11/2008, In: Astrophysical Journal Letters. 688, 1, p. L13-L16 4 p.

    Research output: Contribution to Journal/Magazine › Journal article › peer-review

  24. Published

    The Halos and Environments of Nearby Galaxies (HERON) Survey

    Rich, R. M., Brosch, N., Bullock, J., Burkert, A., Collins, M. L. M., de Groot, L., Kennefick, J., Koch, A., Longstaff, F. A. & Sales, L., 21/03/2017, In: Proceedings of the International Astronomical Union. 11, S321, p. 186-189 4 p.

    Research output: Contribution to Journal/Magazine › Journal article › peer-review

  25. Published

    The Gaia-ESO Survey: detailed abundances in the metal-poor globular cluster NGC 4372

    Roman, I. S., Muñoz, C., Geisler, D., Villanova, S., Kacharov, N., Koch, A., Carraro, G., Tautvaišiene, G., Vallenari, A., Alfaro, E. J., Bensby, T., Flaccomio, E., Francois, P., Korn, A. J., Pancino, E., Recio-Blanco, A., Smiljanic, R., Bergemann, M., Costado, M. T., Damiani, F., & 11 othersHeiter, U., Hourihane, A., Jofré, P., Lardo, C., Laverny, P. D., Masseron, T., Morbidelli, L., Sbordone, L., Sousa, S. G., Worley, C. C. & Zaggia, S., 14/04/2015, In: Astronomy and Astrophysics. 579, 14 p., A6.

    Research output: Contribution to Journal/Magazine › Journal article › peer-review

  26. Published

    The Gaia-ESO Public Spectroscopic Survey

    Koch, A., 2012, In: The Messenger. 147, p. 25-31 7 p.

    Research output: Contribution to Journal/Magazine › Journal article

  27. Published

    The Gaia ESO survey: calibration strategy

    Pancino, E. & Koch, A., 02/2017, In: Astronomy and Astrophysics. 598, 16 p., A5.

    Research output: Contribution to Journal/Magazine › Journal article › peer-review

  28. Published

    The first chemical abundance study of the Hercules dwarf spheroidal galaxy

    Koch, A., McWilliam, A. & Wilkinson, M. I., 2008, In: Bulletin of the American Astronomical Society. 39, p. 896

    Research output: Contribution to Journal/Magazine › Meeting abstract

  29. Published

    The extended star formation history of the Andromeda spheroid at 35 kpc on the minor axis

    Brown, T. M., Beaton, R., Chiba, M., Ferguson, H. C., Gilbert, K. M., Guhathakurta, P., Iye, M., Kalirai, J. S., Koch, A., Komiyama, Y., Majewski, S. R., Reitzel, D. B., Renzini, A., Rich, R. M., Smith, E., Sweigart, A. V. & Tanaka, M., 1/10/2008, In: Astrophysical Journal Letters. 685, 2, p. L121-L124 4 p.

    Research output: Contribution to Journal/Magazine › Journal article › peer-review

  30. Published

    The chemical evolution of subpopulations in the Carina dwarf spheroidal

    Koch, A., Wilkinson, M., Grebel, E. K., Harbeck, D., Kleyna, J., Wyse, R. F. G., Gilmore, G. & Evans, N. W., 2005, In: Proceedings of the International Astronomical Union. 1, C198, p. 134-138 5 p.

    Research output: Contribution to Journal/Magazine › Journal article

  31. Published

    The chemical composition of RGB stars in off-axis bulge field

    Johnson, C. I., Rich, R. M., Kunder, A., Propris, R. D., Kobayashi, C. & Koch, A., 2012, In: Bulletin of the American Astronomical Society. 219, 152.11.

    Research output: Contribution to Journal/Magazine › Meeting abstract

  32. Published

    The chemical composition of a regular halo globular cluster: NGC 5897

    Koch, A. & McWilliam, A., 05/2014, In: Astronomy and Astrophysics. 565, 13 p., A23.

    Research output: Contribution to Journal/Magazine › Journal article › peer-review

  33. Published

    The Bulge Radial Velocity Assay [BRAVA]: techniques and results

    Howard, C. D., Reitzel, D. B., Rich, R. M., Koch, A. & Zhao, H., 2007.

    Research output: Contribution to conference - Without ISBN/ISSN › Poster

  34. Published

    The Bulge Radial Velocity Assay (BRAVA): II. Complete sample and data release

    Kunder, A., Koch, A., Rich, R. M., Propris, R. D., Howard, C. D., Stubbs, S. A., Johnson, C. I., Shen, J., Wang, Y., Robin, A. C., Kormendy, J., Soto, M., Frinchaboy, P., Reitzel, D. B., Zhao, H. & Origlia, L., 6/02/2012, In: The Astronomical Journal. 143, 3, 14 p., 57.

    Research output: Contribution to Journal/Magazine › Journal article › peer-review

  35. Published

    The Bulge Radial Velocity Assay (BRAVA): I. Sample selection and a rotation curve

    Howard, C. D., Rich, R. M., Reitzel, D. B., Koch, A., Propris, R. D. & Zhao, H., 1/12/2008, In: The Astrophysical Journal. 688, 2, p. 1060-1077 18 p.

    Research output: Contribution to Journal/Magazine › Journal article › peer-review

  36. Published

    The Bulge Radial Velocity Assay (BRAVA): final results, a new high velocity star, and public data release

    Rich, R. M., Kunder, A., Propris, R. D. & Koch, A., 2012, In: Bulletin of the American Astronomical Society. 219, 252.02.

    Research output: Contribution to Journal/Magazine › Meeting abstract

  37. Published

    The Bulge Radial Velocity Assay: new observations and results

    Kunder, A., Propris, R. D., Rich, R. M. & Koch, A., 2011, In: Bulletin of the American Astronomical Society. 217, 241.12.

    Research output: Contribution to Journal/Magazine › Meeting abstract

  38. Published

    The Blanco DECam Bulge Survey (BDBS): status and early results

    Koch, A., 2014, In: Bulletin of the American Astronomical Society. 223, 346.19.

    Research output: Contribution to Journal/Magazine › Meeting abstract

  39. Published

    The Be-test in the Li-rich star #1657 of NGC 6397: evidence for Li-flash in RGB stars?

    Pasquini, L., Koch, A., Smiljanic, R., Bonifacio, P. & Modigliani, A., 03/2014, In: Astronomy and Astrophysics. 563, 5 p., A3.

    Research output: Contribution to Journal/Magazine › Journal article › peer-review

  40. Published

    The anisotropic distribution of M31 satellite galaxies: a polar great plane of early-type companions

    Koch, A. & Grebel, E. K., 03/2006, In: The Astronomical Journal. 131, 3, p. 1405-1415 11 p.

    Research output: Contribution to Journal/Magazine › Journal article › peer-review

  41. Published

    The age-metallicity relation of the SMC

    Kayser, A., Grebel, E. K., Harbeck, D., Cole, A. A., Koch, A., Gallagher III, J. S. & Da Costa, G., 2009, Globular Clusters: Guides to Galaxies. Richtler, T. & Larsen, S. (eds.). Springer, p. 157-160 4 p. (Eso Astrophysics Symposia).

    Research output: Contribution in Book/Report/Proceedings - With ISBN/ISSN › Chapter

  42. Published

    The age-metallicity degeneracy in the dwarf spheroidal Carina as seen by FLAMES

    Koch, A., Grebel, E. K., Wyse, R. F. G., Kleyna, J., Wilkinson, M. I., Harbeck, D., Gilmore, G. & Evans, N. W., 2006, In: The Messenger. 123, p. 38-40 3 p.

    Research output: Contribution to Journal/Magazine › Journal article

  43. Published

    Sulphur in the metal poor globular cluster NGC 6397

    Koch, A. & Caffau, E., 10/2011, In: Astronomy and Astrophysics. 534, 6 p., A52.

    Research output: Contribution to Journal/Magazine › Journal article › peer-review

  44. Published

    Substructure in dwarf spheroidals: a star cluster connection?

    Wilkinson, M. I., Kleyna, J., Evans, N. W., Gilmore, G., Grebel, E. K., Koch, A., Read, J. & Young, R., 2005, In: Proceedings of the International Astronomical Union. 1, C198, p. 240-243 4 p.

    Research output: Contribution to Journal/Magazine › Journal article

  45. Published

    Structural parameters of seven small magellanic cloud intermediate-age and old star clusters

    Glatt, K., Grebel, E. K., Gallagher III, J. S., Nota, A., Sabbi, E., Sirianni, M., Clementini, G., Costa, G. D., Tosi, M., Harbeck, D., Koch, A. & Kayser, A., 1/10/2009, In: The Astronomical Journal. 138, 5, p. 1403-1416 14 p.

    Research output: Contribution to Journal/Magazine › Journal article › peer-review

  46. Published

    Strömgren uvby photometry of the peculiar globular cluster NGC 2419

    Frank, M. J., Koch, A., Feltzing, S., Kacharov, N., Wilkinson, M. I. & Irwin, M., 09/2015, In: Astronomy and Astrophysics. 581, 15 p., A72.

    Research output: Contribution to Journal/Magazine › Journal article › peer-review

  47. Published

    Striking agreement between galactic bulge kinematics from the BRAVA survey, and an N-body bar

    Rich, R. M., Shen, J., Howard, C. D., Propris, R. D., Koch, A. & Reitzel, D. B., 2010, In: Bulletin of the American Astronomical Society. 215, 321.06.

    Research output: Contribution to Journal/Magazine › Meeting abstract

  48. Published

    Stellar science from a blue wavelength range: a possible design for the blue arm of 4MOST

    Hansen, C. J., Ludwig, H-G., Seifert, W., Koch, A., Xu, W., Caffau, E., Christlieb, N., Korn, A. J., Lind, K., Sbordone, L., Ruchti, G. R., Feltzing, S., De jong, R. S., Barden, S. & Schnurr, O., 10/09/2015, In: Astronomical Notes / Astronomische Nachrichten. 336, 7, p. 665-676 12 p.

    Research output: Contribution to Journal/Magazine › Journal article › peer-review

  49. Published

    Stellar kinematics in the remote Leo II dwarf spheroidal galaxy: another brick in the wall

    Koch, A., Kleyna, J., Wilkinson, M. I., Grebel, E. K., Gilmore, G. F., Wyn Evans, N., Wyse, R. F. G. & Harbeck, D., 8/06/2007, In: The Astronomical Journal. 134, 2, p. 566-578 13 p.

    Research output: Contribution to Journal/Magazine › Journal article › peer-review

  50. Published

    Stellar kinematics in the remote Leo I and II dwarf spheroidals

    Koch, A., Wilkinson, M. I., Kleyna, J., Gilmore, G. F., Grebel, E. K., Evans, N. W. & Wyse, R. F. G., 2007.

    Research output: Contribution to conference - Without ISBN/ISSN › Poster

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