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Dr Andreas Koch

Formerly at Lancaster University

  1. 2015
  2. 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 othersPietrukowicz, P., Skowron, J., Kozłowski, S. & Mróz, P., 16/07/2015, In: Astrophysical Journal Letters. 808, 1, 6 p., L12.

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  3. 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/MagazineJournal articlepeer-review

  4. 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/MagazineJournal articlepeer-review

  5. 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/MagazineJournal articlepeer-review

  6. 2016
  7. 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 Journal/MagazineJournal articlepeer-review

  8. 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/MagazineJournal articlepeer-review

  9. 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/MagazineJournal articlepeer-review

  10. 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 Journal/MagazineJournal articlepeer-review

  11. 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 Journal/MagazineJournal articlepeer-review

  12. 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 Journal/MagazineJournal articlepeer-review

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