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

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

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 Journal/Magazine › Journal article › peer-review

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 Journal/Magazine › Journal article › peer-review

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 Journal/Magazine › Journal article › peer-review

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 Journal/Magazine › Journal article › peer-review

The Gaia ESO survey: calibration strategy

Pancino, E. & Koch, A., 02/2017, In: Astronomy and Astrophysics. 598, 16 p., A5.

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

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 Journal/Magazine › Journal article › peer-review

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

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/Magazine › Journal article › peer-review

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.-Y., 18/04/2016, In: Astrophysical Journal Letters. 821, 2, 6 p., L25.

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

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

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/Magazine › Journal article › peer-review

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/Magazine › Journal article › peer-review

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

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/Magazine › Journal article › peer-review

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/Magazine › Journal article › peer-review

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

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

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 Journal/Magazine › Journal article › peer-review

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 Journal/Magazine › Journal article › peer-review

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

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 Journal/Magazine › Journal article › peer-review

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 Journal/Magazine › Journal article › peer-review

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 Journal/Magazine › Journal article

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 Journal/Magazine › Journal article › peer-review

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

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 Journal/Magazine › Journal article › peer-review

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

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

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

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 Journal/Magazine › Journal article › peer-review

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 Journal/Magazine › Journal article › peer-review

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 Journal/Magazine › Journal article › peer-review

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

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

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

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

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

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

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 Journal/Magazine › Journal article › peer-review

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 Journal/Magazine › Journal article › peer-review

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 Journal/Magazine › Journal article › peer-review

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 Journal/Magazine › Journal article › peer-review

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 Journal/Magazine › Meeting abstract

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

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

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 Journal/Magazine › Meeting abstract