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.

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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.

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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.

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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.

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4MOST: 4-metre Multi-Object Spectroscopic Telescope

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

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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.

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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.

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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.

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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.

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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.

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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.

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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.

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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.

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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.

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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.

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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.

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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.

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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.

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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.

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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.

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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.

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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.

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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.

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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.

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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/Magazine › Journal article › peer-review