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Observational Astrophysics

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  1. 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

  2. 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

  3. 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

  4. 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

  5. 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

  6. 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

  7. 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

  8. 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

  9. 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

  10. 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

  11. 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

  12. 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

  13. 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

  14. Published

    Chemical evolution in the Carina dwarf spheroidal

    Koch, A., Grebel, E. K., Harbeck, D., Wilkinson, M. I., Kleyna, J., Gilmore, G., Wyse, R. F. G. & Evans, N. W., 2005, Chemical Abundances and Mixing in Stars in the Milky Way and its Satellites. Randich, S. & Pasquini, L. (eds.). Springer, p. 249-251 3 p. (ESO Astrophysics Symposia).

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

  15. 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

  16. Published

    Correcting spatial gradients: the case of Wide Field Imager photometry

    Koch, A., Grebel, E. K., Odenkirchen, M. & Caldwell, J. A. R., 2004, In: The Messenger. 115, p. 37-39 3 p.

    Research output: Contribution to Journal/Magazine › Journal article

  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

    A retrospective of r-process and a-element abundances in the Galactic disk: correlations with rotational velocity

    Koch, A., Grebel, E. K. & Odenkirchen, M., 2003, In: Astronomical Notes / Astronomische Nachrichten. 324, S3, p. 144-145 2 p.

    Research output: Contribution to Journal/Magazine › Meeting abstract

  19. Published

    A calibration map for the Wide Field Imager

    Koch, A., Odenkirchen, M., Caldwell, J. A. R. & Grebel, E. K., 2003, In: Astronomical Notes / Astronomische Nachrichten. 324, S2, p. 95 1 p.

    Research output: Contribution to Journal/Magazine › Meeting abstract

  20. Published

    Formation histories of galactic halos via chemical and dynamical analyses of near-by stellar systems: Habilitation Thesis

    Koch, A., 2014, University of Heidelberg.

    Research output: Thesis › Doctoral Thesis

  21. Published

    On the evolution and environmental dependence of the star formation rate versus stellar mass relation since Z ∼ 2

    Koyama, Y., Smail, I., Kurk, J., Geach, J. E., Sobral, D., Kodama, T., Nakata, F., Swinbank, A. M., Best, P. N., Hayashi, M. & Tadaki, K. I., 1/09/2013, In: Monthly Notices of the Royal Astronomical Society. 434, 1, p. 423-436 14 p.

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

  22. Published

    Galaxy Zoo: secular evolution of barred galaxies from structural decomposition of multiband images

    Kruk, S. J., Lintott, C. J., Bamford, S. P., Masters, K. L., Simmons, B. D., Häußler, B., Cardamone, C. N., Hart, R. E., Kelvin, L., Schawinski, K., Smethurst, R. J. & Vika, M., 1/02/2018, In: Monthly Notices of the Royal Astronomical Society. 473, 4, p. 4731-4753 23 p.

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

  23. Published

    Galaxy Zoo: finding offset discs and bars in SDSS galaxies

    Kruk, S. J., Lintott, C. J., Simmons, B. D., Bamford, S. P., Cardamone, C. N., Fortson, L., Hart, R. E., Häußler, B., Masters, K. L., Nichol, R. C., Schawinski, K. & Smethurst, R. J., 11/08/2017, In: Monthly Notices of the Royal Astronomical Society. 469, 3, p. 3363-3373 11 p.

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

  24. Published

    The 2016 January eruption of recurrent Nova LMC 1968

    Kuin, N. P. M., Page, K. L., Mróz, P., Darnley, M. J., Shore, S. N., Osborne, J. P., Walter, F., Di Mille, F., Morrell, N., Munari, U., Bohlsen, T., Evans, A., Gehrz, R. D., Starrfield, S., Henze, M., Williams, S. C., Schwarz, G. J., Udalski, A., Szymański, M. K. & Poleski, R. & 6 others, Soszyński, I., Ribeiro, V. A. R. M., Angeloni, R., Breeveld, A. A., Beardmore, A. P. & Skowron, J., 31/01/2020, In: Monthly Notices of the Royal Astronomical Society. 491, 1, p. 655-679 25 p.

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

  25. 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.-Y., 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 Journal/Magazine › Journal article › peer-review

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