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Dr Andreas Koch

Formerly at Lancaster University

  1. 2017
  2. 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 journalJournal articlepeer-review

  3. 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 journalJournal articlepeer-review

  4. 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 journalJournal articlepeer-review

  5. Published

    Insights into the chemical composition of the metal-poor Milky Way halo globular cluster NGC 6426

    Hanke, M., Koch, A., Hansen, C. J. & McWilliam, A., 03/2017, In: Astronomy and Astrophysics. 599, 15 p., A97.

    Research output: Contribution to journalJournal articlepeer-review

  6. Published

    Evidence for multiple populations in intermediate age cluster Lindsay 1 in the SMC

    Hollyhead, K., Kacharov, N., Lardo, C., Bastian, N., Hilker, M., Rejkuba, M., Koch, A., Grebel, E. K. & Georgiev, I., 11/02/2017, In: Monthly Notices of the Royal Astronomical Society. 465, 1, p. L39-L43 5 p.

    Research output: Contribution to journalJournal articlepeer-review

  7. Published

    Something borrowed, something blue: the nature of blue metal-poor stars inferred from their colours and chemical abundances

    Hansen, C. J., Jofre, P., Koch, A., McWilliam, A. & Sneden, C. S., 02/2017, In: Astronomy and Astrophysics. 598, 16 p., A54.

    Research output: Contribution to journalJournal articlepeer-review

  8. 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 journalJournal articlepeer-review

  9. 2016
  10. 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 journalJournal articlepeer-review

  11. Published

    A new algorithm for optimizing the wavelength coverage for spectroscopic studies: Spectral Wavelength Optimization Code (swoc)

    Ruchti, G. R., Feltzing, S., Lind, K., Caffau, E., Korn, A. J., Schnurr, O., Hansen, C. J., Koch, A., Sbordone, L. & De jong, R. S., 11/09/2016, In: Monthly Notices of the Royal Astronomical Society. 461, 2, p. 2174-2191 17 p.

    Research output: Contribution to journalJournal articlepeer-review

  12. Published

    Chemical abundances in a high-velocity RR Lyrae star near the bulge

    Hansen, C. J., Rich, R. M., Koch, A., Xu, S., Kunder, A. & Ludwig, H-G., 1/06/2016, In: Astronomy and Astrophysics. 590, 9 p., A39.

    Research output: Contribution to journalJournal articlepeer-review

  13. Published

    Before the bar: kinematic detection of a spheroidal metal-poor bulge component

    Kunder, A., Rich, R. M., Koch, A., Storm, J., Nataf, D. M., Propris, R. D., Walker, A., Bono, G., Johnson, C. I., Shen, J. & Li, Z., 18/04/2016, In: Astrophysical Journal Letters. 821, 2, 6 p., L25.

    Research output: Contribution to journalJournal articlepeer-review

  14. 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 journalJournal articlepeer-review

  15. 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 journalJournal articlepeer-review

  16. Published

    Evidence for a chemical enrichment coupling of globular clusters and field stars in the Fornax dSph

    Hendricks, B., Boeche, C., Johnson, C. I., Frank, M. J., Koch, A., Mateo, M. & Bailey III, J. I., 01/2016, In: Astronomy and Astrophysics. 585, 17 p., A86.

    Research output: Contribution to journalJournal articlepeer-review

  17. 2015
  18. 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 journalJournal articlepeer-review

  19. 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 journalJournal articlepeer-review

  20. 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 journalJournal articlepeer-review

  21. Published

    A high-velocity bulge RR Lyrae variable on a halo-like orbit

    Kunder, A., Rich, R. M., Hawkins, K., Poleski, R., Storm, J., Johnson, C. I., Shen, J., Li, Z., Cordero, M. J., Nataf, D. M., Bono, G., Walker, A. R., Koch, A., Propris, R. D., Udalski, A., Szymanski, M. K., Soszynski, I., Pietrzynski, G., Ulaczyk, K., Wyrzykowski, L. & 4 others, Pietrukowicz, P., Skowron, J., Kozłowski, S. & Mróz, P., 16/07/2015, In: Astrophysical Journal Letters. 808, 1, 6 p., L12.

    Research output: Contribution to journalJournal articlepeer-review

  22. 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 journalJournal articlepeer-review

  23. 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 others, Steffen, M., 07/2015, In: Astronomy and Astrophysics. 579, 20 p., A28.

    Research output: Contribution to journalJournal articlepeer-review

  24. Published

    Selecting Sagittarius: identification and chemical characterization of the Sagittarius stream

    Hyde, E. A., Keller, S., Zucker, D. B., Ibata, R., Siebert, A., Lewis, G. F., Penarrubia, J., Irwin, M., Gilmore, G., Lane, R. R., Koch, A., Conn, A. R., Diakogiannis, F. I. & Martell, S., 2/06/2015, In: The Astrophysical Journal. 805, 2, 13 p., 189.

    Research output: Contribution to journalJournal articlepeer-review

  25. 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 journalJournal articlepeer-review

  26. 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 others, Heiter, 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 journalJournal articlepeer-review

  27. Published

    An inefficient dwarf: Chemical abundances and the evolution of the Ursa Minor dwarf spheroidal galaxy

    Ural, U., Cescutti, G., Koch, A., Kleyna, J., Feltzing, S. & Wilkinson, M. I., 19/03/2015, In: Monthly Notices of the Royal Astronomical Society. 449, 1, p. 761-770 10 p.

    Research output: Contribution to journalJournal articlepeer-review

  28. Published

    Galaxy evolution through resolved stellar populations in the nearby Centaurus A group

    Crnojevic, D., Grebel, E. K., Ferguson, A. M. N., Koch, A., Rejkuba, M., Da Costa, G., Jerjen, H., Irwin, M. J., Bernard, E. J., Arimoto, N., Jablonka, P. & Kobayashi, C., 2015, In: Memorie della Societa Astronomica Italiana. 86, p. 302-305 4 p.

    Research output: Contribution to journalJournal article

  29. 2014
  30. Published

    Insights from the outskirts: chemical and dynamical properties in the outer parts of the Fornax dwarf spheroidal galaxy

    Hendricks, B., Koch, A., Walker, M., Johnson, C. I., Penarrubia, J. & Gilmore, G., 12/2014, In: Astronomy and Astrophysics. 572, 19 p., A82.

    Research output: Contribution to journalJournal articlepeer-review

  31. 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 journalJournal articlepeer-review

  32. Published

    Light, Alpha, and Fe-peak element abundances in the Galactic bulge

    Johnson, C. I., Rich, R. M., Kobayashi, C., Kunder, A. & Koch, A., 9/09/2014, In: The Astronomical Journal. 148, 4, 32 p., 67.

    Research output: Contribution to journalJournal articlepeer-review

  33. Published

    4MOST: 4-metre Multi-Object Spectroscopic Telescope

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

    Research output: Contribution to journalJournal article

  34. 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 journalJournal articlepeer-review

  35. 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 journalJournal articlepeer-review

  36. 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 journalJournal articlepeer-review

  37. 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 journalJournal articlepeer-review

  38. 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 journalJournal articlepeer-review

  39. 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 journalMeeting abstract

  40. Published
  41. 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 journalMeeting abstract

  42. 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 journalMeeting abstract

  43. 2013
  44. 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 journalJournal articlepeer-review

  45. 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 journalJournal articlepeer-review

  46. 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 journalJournal articlepeer-review

  47. 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 journalJournal articlepeer-review

  48. Published

    A kinematic study of the Andromeda dwarf spheroidal system

    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., 26/04/2013, In: The Astrophysical Journal. 768, 2, 36 p., 172.

    Research output: Contribution to journalJournal articlepeer-review

  49. 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 others, Depagne, E. & Schnurr, O., 1/03/2013, In: Astronomical Notes / Astronomische Nachrichten. 334, 3, p. 197-216 20 p.

    Research output: Contribution to journalJournal articlepeer-review

  50. Published

    Metallicity distribution functions, radial velocities, and alpha element abundances in three off-axis bulge fields

    Johnson, C. I., Rich, R. M., Kobayashi, C., Kunder, A., Pilachowski, C. A., Koch, A. & Propris, R. D., 27/02/2013, In: The Astrophysical Journal. 765, 2, 47 p., 157.

    Research output: Contribution to journalJournal articlepeer-review

  51. Published

    Population gradients and photometric metallicities in early- and transition-type dwarf galaxies: clues from the Sculptor group

    Lianou, S., Grebel, E. K., Da Costa, G. S., Rejkuba, M., Jerjen, H. & Koch, A., 17/01/2013, In: Astronomy and Astrophysics. 550, 21 p., A7.

    Research output: Contribution to journalJournal articlepeer-review

  52. Published

    A new, smaller size for the low-surface brightness galaxy VCC 1661 in the Virgo Cluster

    Black, C. S., Koch, A., Rich, R. M., Longstaff, F. A., Collins, M. L. M., Lisker, T. & Janz, J., 2013, In: Bulletin of the American Astronomical Society. 221, 436.01.

    Research output: Contribution to journalMeeting abstract

  53. 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 journalMeeting abstract

  54. 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 journalMeeting abstract

  55. Published

    Selecting Sagittarius: a study of Sagittarius dwarf members throughout the Milky Way Galactic halo

    Hyde, E. A., Zucker, D. B., Keller, S., Siebert, A., Ibata, R. A., Penarrubia, J., Martell, S., Lewis, G., Irwin, M. & Koch, A., 2013, In: Bulletin of the American Astronomical Society. 221, 425.03.

    Research output: Contribution to journalMeeting abstract

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