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Research

Dr Andreas Koch

Formerly at Lancaster University

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  1. 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

  2. Published

    Galactic evolution of sulphur as traced by globular clusters

    Kacharov, N., Koch, A., Caffau, E. & Sbordone, L., 24/04/2015, In: Astronomy and Astrophysics. 577, 9 p., A18.

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

  3. Published

    A study of rotating globular clusters: the case of the old, metal-poor globular cluster NGC 4372

    Kacharov, N., Bianchini, P., Koch, A., Frank, M. J., Martin, N. F., van de Ven, G., Puzia, T. H., McDonald, I., Johnson, C. I. & Zijlstra, A. A., 11/07/2014, In: Astronomy and Astrophysics. 567, 12 p., A69.

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

  4. Published

    A comprehensive chemical abundance study of the outer halo globular cluster M 75

    Kacharov, N., Koch, A. & McWilliam, A., 10/06/2013, In: Astronomy and Astrophysics. 554, 15 p., A81.

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

  5. Published

    An abundance study of the outer halo globular cluster M75

    Kacharov, N. & Koch, A., 2013, In: Memorie della Societa Astronomica Italiana. 84, p. 224

    Research output: Contribution to Journal/Magazine › Meeting abstract

  6. Published

    Precise abundance analysis of the outer halo globular cluster M 75

    Kacharov, N. & Koch, A., 2012, In: AIP Conference Proceedings. 1480, p. 385

    Research output: Contribution to Journal/Magazine › Journal article

  7. 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

  8. Published

    A spectroscopy-based age-metallicity relation of the SMC

    Kayser, A., Grebel, E. K., Harbeck, D., Cole, A. A., Koch, A., Glatt, K., Gallagher III, J. S. & Da Costa, G., 2007, Stellar Populations as Building Blocks of Galaxies. Peletier, R. F. & Vazdekis, A. (eds.). Cambridge University Press, Vol. 2. p. 351-352 2 p. (Proceedings of the International Astronomical Union; vol. S241).

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

  9. Published

    Another look at the size of the low-surface brightness galaxy VCC 1661 in the Virgo Cluster

    Koch, A., Black, C. S., Rich, R. M., Longstaff, F. A., Collins, M. L. M. & Janz, J., 05/2017, In: Astronomical Notes / Astronomische Nachrichten. 338, 4, p. 503-509 7 p.

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

  10. Published

    Galactic Pal-eontology: abundance analysis of the disrupted globular cluster Palomar 5

    Koch, A. & Cote, P., 1/05/2017, In: Astronomy and Astrophysics. 601, 9 p., A41.

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

  11. Published

    Metal-poor stars towards the Galactic bulge: a population potpourri

    Koch, A., McWilliam, A., Preston, G. W. & Thompson, I. P., 1/03/2016, In: Astronomy and Astrophysics. 587, 15 p., A124.

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

  12. Published

    Major mergers with small galaxies: the discovery of a Magellanic-type galaxy at z=0.12

    Koch, A., Frank, M. J., Pasquali, A., Rich, R. M. & Rabitz, A., 15/12/2015, In: The Astrophysical Journal. 815, 2, 10 p., 105.

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

  13. Published

    A detection of gas associated with the M31 Stellar Stream

    Koch, A., Danforth, C. W., Rich, R. M., Ibata, R. A. & Keeney, B. A., 9/07/2015, In: The Astrophysical Journal. 807, 2, 9 p., 153.

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

  14. Published

    A chemical confirmation of the faint Boötes II dwarf Spheroidal Galaxy

    Koch, A. & Rich, R. M., 25/09/2014, In: The Astrophysical Journal. 794, 1, 9 p., 89.

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

  15. 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

  16. Published

    A spectroscopic binary in the Hercules dwarf spheroidal galaxy

    Koch, A., Hansen, T., Feltzing, S. & Wilkinson, M. I., 13/12/2013, In: The Astrophysical Journal. 780, 1, 6 p., 91.

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

  17. Published

    Neutron-capture element deficiency of the Hercules dwarf spheroidal galaxy

    Koch, A., Feltzing, S., Adén, D. & Matteucci, F., 06/2013, In: Astronomy and Astrophysics. 554, 10 p., A5.

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

  18. 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

  19. 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

  20. Published

    Discovery of a super-Li-rich turnoff star in the metal-poor globular cluster NGC 6397

    Koch, A., Lind, K. & Rich, R. M., 23/08/2011, In: Astrophysical Journal Letters. 738, 2, 5 p., L29.

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

  21. Published

    A differential chemical element analysis of the metal-poor globular cluster NGC 6397

    Koch, A. & McWilliam, A., 19/07/2011, In: The Astronomical Journal. 142, 2, 13 p., 63.

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

  22. Published

    Chemical abundances for the outer halo cluster Pal 4 from co-added high-resolution spectroscopy

    Koch, A. & Côté, P., 07/2010, In: Astronomy and Astrophysics. 517, 15 p., A59.

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

  23. Published

    A differential chemical abundance scale for the globular cluster M5

    Koch, A. & McWilliam, A., 22/04/2010, In: The Astronomical Journal. 139, 6, p. 2289-2299 11 p.

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

  24. Published

    A statistical analysis of the late-type stellar content in the Andromeda Halo

    Koch, A. & Rich, R. M., 21/04/2010, In: The Astronomical Journal. 139, 6, p. 2279-2288 10 p.

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

  25. Published

    All quiet in the outer halo: chemical abundances in the globular cluster Pal 3

    Koch, A., Côté, P. & McWilliam, A., 11/2009, In: Astronomy and Astrophysics. 506, 2, p. 729-743 15 p.

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

  26. Published

    Complexity in small-scale dwarf spheroidal galaxies

    Koch, A., Adén, D., Grebel, E. K. & Feltzing, S., 08/2009, In: Proceedings of the International Astronomical Union. 5, S265, p. 227-232 6 p.

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

  27. Published

    A spectroscopic confirmation of the Bootes II dwarf spheroidal

    Koch, A., Wilkinson, M. I., Kleyna, J., Irwin, M., Zucker, D. B., Belokurov, V., Gilmore, G., Fellhauer, M. & Wyn Evans, N., 1/01/2009, In: The Astrophysical Journal. 690, 1, p. 453-462 10 p.

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

  28. Published

    Kinematic and chemical constraints on the formation of M31's inner and outer halo

    Koch, A., Rich, R. M., Reitzel, D. B., Martin, N. F., Ibata, R. A., Chapman, S. C., Majewski, S. R., Mori, M., Loh, Y-S., Ostheimer, J. C. & Tanaka, M., 20/12/2008, In: The Astrophysical Journal. 689, 2, p. 958-982 25 p.

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

  29. 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

  30. Published

    Complexity on small scales III: iron and α element abundances in the Carina dwarf spheroidal galaxy

    Koch, A., Grebel, E. K., Gilmore, G. F., Wyse, R. F. G., Kleyna, J., Harbeck, D., Wilkinson, M. I. & Wyn Evans, N., 13/03/2008, In: The Astronomical Journal. 135, 4, p. 1580-1597 18 p.

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

  31. Published

    A new abundance scale for the globular cluster 47 Tuc

    Koch, A. & McWilliam, A., 12/03/2008, In: The Astronomical Journal. 135, 4, p. 1551-1566 16 p.

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

  32. 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

  33. Published

    Stellar kinematics and metallicities in the Leo I dwarf spheroidal galaxy: wide-field implications for galactic evolution

    Koch, A., Wilkinson, M. I., Kleyna, J., Gilmore, G., Grebel, E. K., Mackey, A. D., Wyn Evans, N. & Wyse, R. F. G., 1/03/2007, In: The Astrophysical Journal. 657, 1, p. 241-261 21 p.

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

  34. Published

    Complexity on small scales: II. Metallicities and ages in the Leo II dwarf spheroidal galaxy

    Koch, A., Grebel, E. K., Kleyna, J., Wilkinson, M. I., Harbeck, D., Gilmore, G., Wyse, R. F. G. & Wyn Evans, N., 01/2007, In: The Astronomical Journal. 133, 1, p. 270-283 14 p.

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

  35. 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

  36. Published

    Complexity on small scales: the metallicity distribution of the Carina dwarf spheroidal galaxy

    Koch, A., Grebel, E. K., Wyse, R. F. G., Kleyna, J., Wilkinson, M. I., Harbeck, D., Gilmore, G. & Wyn Evans, N., 02/2006, In: The Astronomical Journal. 131, 2, p. 895-911 17 p.

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

  37. Published

    Mass segregation in the globular cluster Palomar 5 and its tidal tails

    Koch, A., Grebel, E. K., Odenkirchen, M., Martínez-Delgado, D. & Caldwell, J. A. R., 11/2004, In: The Astronomical Journal. 128, 5, p. 2274-2287 14 p.

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

  38. Published

    A calibration map for Wide Field Imager photometry

    Koch, A., Odenkirchen, M., Grebel, E. K. & Caldwell, J. A. R., 8/12/2003, In: Astronomical Notes / Astronomische Nachrichten. 325, 4, p. 299-306 8 p.

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

  39. Published

    Europium abundances in F and G disk dwarfs

    Koch, A. & Edvardsson, B., 01/2002, In: Astronomy and Astrophysics. 381, 2, p. 500-506 7 p.

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

  40. Published

    4MOST: 4-metre Multi-Object Spectroscopic Telescope

    4MOST Consortium, 24/07/2014, In: Proceedings of SPIE. 9147

    Research output: Contribution to Journal/Magazine › Journal article

  41. 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

  42. Published

    Searching for stellar sub-structure in the Galactic bulge

    Koch, A., 2014, In: Bulletin of the American Astronomical Society. 223, 442.04.

    Research output: Contribution to Journal/Magazine › Meeting abstract

  43. Published

    Blanco DECam Bulge Survey (BDBS): current status and progress

    Koch, A., 2014, In: Bulletin of the American Astronomical Society. 224, 319.01.

    Research output: Contribution to Journal/Magazine › Meeting abstract

  44. Published

    An intermediate-band photometric study of the “Globular Cluster” NGC 2419

    Koch, A., Frank, M. J., Feltzing, S., Adén, D., Kacharov, N. & Wilkinson, M. I., 2013, In: Memorie della Societa Astronomica Italiana. 84, p. 67

    Research output: Contribution to Journal/Magazine › Meeting abstract

  45. Published

    4MOST: 4-metre Multi-Object Spetroscopic Telescope

    4MOST Consortium, 2012, In: Proceedings of SPIE. 8446

    Research output: Contribution to Journal/Magazine › Journal article

  46. Published

    Small-scale hero: massive-star enrichment in the Hercules dwarf spheroidal

    Koch, A., Matteucci, F. & Feltzing, S., 2012, In: AIP Conference Proceedings. 1480, p. 190

    Research output: Contribution to Journal/Magazine › Journal article

  47. 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

  48. Published

    A super-Li rich turnoff star in NGC 6397: the puzzle persists

    Koch, A., Lind, K., Thompson, I. B. & Rich, R. M., 2012, In: Memorie della Societa Astronomica Italiana. 22, p. 79

    Research output: Contribution to Journal/Magazine › Meeting abstract

  49. Published

    4MOST: 4-meter Multi-Object Spectroscopic Telescope

    4MOST Consortium, 2012, In: EPJ Web of Conferences. 19, 3 p., 09004.

    Research output: Contribution to Journal/Magazine › Journal article

  50. 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

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