Ruprecht-Karls-Universität Heidelberg
Personnel

Dr. Andreas Koch

Astronomisches Rechen-Institut



Office
Neubau, Room N.E-03

Postal address
Zentrum für Astronomie der Universität Heidelberg
Astronomisches Rechen-Institut
Mönchhofstr. 12-14
69120 Heidelberg






Publications done at ZAH since 2007

38.
5/2018
Hollyhead, K.; Lardo, C. et al. (inc. Grebel, E. K.; Koch, A.)
Kron 3: a fourth intermediate age cluster in the SMC with evidence of multiple populations
MNRAS 476, 114(2018)

37.
4/2018
Bonifacio, P.; Caffau, E. et al. (inc. Ludwig, H. -G.; Koch, A.; Klessen, R. S.; Christlieb, N.)
TOPoS. IV. Chemical abundances from high-resolution observations of seven extremely metal-poor stars
A&A 612, A65(2018)

36.
4/2018
Kunder, Andrea; Mills, Arthur et al. (inc. Koch, Andreas)
Radial Velocities of RR Lyrae Stars in and around NGC 6441
AJ 155, 171(2018)

35.
1/2018
Koch, Andreas; Hansen, Terese T. et al.
Detailed chemical abundance analysis of the thick disk star cluster Gaia 1
A&A 609, A13(2018)

34.
9/2017
Koch, Andreas; Kunder, Andrea et al.
Spectroscopic confirmation of the low-latitude object FSR 1716 as an old globular cluster
A&A 605, A128(2017)

33.
3/2017
Hanke, M.; Koch, A. et al.
Insights into the chemical composition of the metal-poor Milky Way halo globular cluster NGC 6426
A&A 599, A97(2017)

32.
5/2016
Hansen, C. J.; Rich, R. M. et al. (inc. Ludwig, H. -G.; Koch, A.)
Chemical abundances in a high-velocity RR Lyrae star near the bulge
A&A 590, A39(2016)

31.
2/2016
Martin, Nicolas F.; Ibata, Rodrigo A. et al. (inc. Koch, Andreas)
Triangulum II: A Very Metal-poor and Dynamically Hot Stellar System
ApJ 818, 40(2016)

30.
1/2016
Hendricks, Benjamin; Boeche, Corrado et al. (inc. Koch, Andreas; Frank, Matthias J.)
Evidence for a chemical enrichment coupling of globular clusters and field stars in the Fornax dSph
A&A 585, A86(2016)

29.
12/2015
Koch, Andreas; Frank, Matthias J. et al. (inc. Pasquali, Anna)
Major Mergers with Small Galaxies: The Discovery of a Magellanic-type Galaxy at z = 0.12
ApJ 815, 105(2015)

28.
9/2015
Frank, Matthias J.; Koch, Andreas et al. (inc. Kacharov, Nikolay)
Strömgren uvby photometry of the peculiar globular cluster NGC 2419
A&A 581, A72(2015)

27.
9/2015
Hansen, C. J.; Ludwig, H. -G. et al. (inc. Christlieb, N.; Koch, A.; Seifert, W.)
Stellar science from a blue wavelength range. A possible design for the blue arm of 4MOST
AN 336, 665(2015)

26.
7/2015
Koch, Andreas; Danforth, Charles W. et al.
A Detection of Gas Associated with the M31 Stellar Stream
ApJ 807, 153(2015)

25.
7/2015
Bonifacio, P.; Caffau, E. et al. (inc. Koch, A.; Glover, S. C. O.; Clark, P. C.; Christlieb, N.; Ludwig, H. -G.; Klessen, R. S.; Spite, M.)
TOPoS . II. On the bimodality of carbon abundance in CEMP stars Implications on the early chemical evolution of galaxies
A&A 579, A28(2015)

24.
6/2015
Hyde, E. A.; Keller, S. et al. (inc. Koch, A.)
Selecting Sagittarius: Identification and Chemical Characterization of the Sagittarius Stream
ApJ 805, 189(2015)

23.
5/2015
Ural, Uğur; Cescutti, Gabriele et al. (inc. Koch, Andreas)
An inefficient dwarf: chemical abundances and the evolution of the Ursa Minor dwarf spheroidal galaxy
MNRAS 449, 761(2015)

22.
12/2014
Hendricks, Benjamin; Koch, Andreas et al.
Insights from the outskirts: Chemical and dynamical properties in the outer parts of the Fornax dwarf spheroidal galaxy
A&A 572, A82(2014)

21.
10/2014
Johnson, Christian I.; Rich, R. Michael et al. (inc. Koch, Andreas)
Light, Alpha, and Fe-peak Element Abundances in the Galactic Bulge
AJ 148, 67(2014)

20.
7/2014
Kacharov, N.; Bianchini, P. et al. (inc. Frank, M. J.; Koch, A.)
A study of rotating globular clusters. The case of the old, metal-poor globular cluster NGC 4372
A&A 567, A69(2014)

19.
4/2014
Hendricks, Benjamin; Koch, Andreas et al. (inc. Boeche, Corrado)
The Metal-poor Knee in the Fornax Dwarf Spheroidal Galaxy
ApJ 785, 102(2014)

18.
1/2014
Koch, Andreas; Hansen, Terese et al.
A Spectroscopic Binary in the Hercules Dwarf Spheroidal Galaxy
ApJ 780, 91(2014)

17.
12/2013
Caffau, E.; Bonifacio, P. et al. (inc. Ludwig, H. -G.; Koch, A.; Klessen, R.; Glover, S.; Clark, P.; Christlieb, N.; Sbordone, L.)
TOPoS. I. Survey design and analysis of the first sample
A&A 560, A71(2013)

16.
6/2013
Koch, A.; Feltzing, S. et al.
Neutron-capture element deficiency of the Hercules dwarf spheroidal galaxy
A&A 554, A5(2013)

15.
6/2013
Kacharov, N.; Koch, A. et al.
A comprehensive chemical abundance study of the outer halo globular cluster M 75
A&A 554, A81(2013)

14.
5/2013
Collins, Michelle L. M.; Chapman, Scott C. et al. (inc. Koch, Andreas)
A Kinematic Study of the Andromeda Dwarf Spheroidal System
ApJ 768, 172(2013)

13.
3/2013
Johnson, Christian I.; Rich, R. Michael et al. (inc. Koch, Andreas)
Metallicity Distribution Functions, Radial Velocities, and Alpha Element Abundances in Three Off-axis Bulge Fields
ApJ 765, 157(2013)

12.
3/2013
Caffau, E.; Koch, A. et al. (inc. Grebel, E. K.; Ludwig, H. -G.; Christlieb, N.; Hansen, C. J.; Sbordone, L.)
Velocity and abundance precisions for future high-resolution spectroscopic surveys: A study for 4MOST
AN 334, 197(2013)

11.
2/2013
Lianou, S.; Grebel, E. K. et al. (inc. Koch, A.)
Population gradients and photometric metallicities in early- and transition-type dwarf galaxies: Clues from the Sculptor group
A&A 550, A7(2013)

10.
9/2012
Haschke, Raoul; Grebel, Eva K. et al. (inc. Koch, Andreas; Hansen, Camilla J.; Duffau, Sonia)
Chemical Abundances of Metal-poor RR Lyrae Stars in the Magellanic Clouds
AJ 144, 88(2012)

9.
8/2012
Koch, Andreas; Burkert, Andreas et al.
Threshing in Action: The Tidal Disruption of a Dwarf Galaxy by the Hydra I Cluster
ApJ 755, L13(2012)

8.
3/2012
Kunder, Andrea; Koch, Andreas et al.
The Bulge Radial Velocity Assay (BRAVA). II. Complete Sample and Data Release
AJ 143, 57(2012)

7.
3/2012
Salucci, Paolo; Wilkinson, Mark I. et al. (inc. Koch, Andreas; Grebel, Eva K.)
Dwarf spheroidal galaxy kinematics and spiral galaxy scaling laws
MNRAS 420, 2034(2012)

6.
2/2012
Rich, R. M.; Collins, M. L. M. et al. (inc. Koch, A.)
A tidally distorted dwarf galaxy near NGC 4449
Natur 482, 192(2012)

5.
11/2011
Lépine, Sébastien; Koch, Andreas et al.
A First Measurement of the Proper Motion of the Leo II Dwarf Spheroidal Galaxy
ApJ 741, 100(2011)

4.
10/2011
Koch, A.; Caffau, E.
Sulphur in the metal poor globular cluster NGC 6397
A&A 534, A52(2011)

3.
9/2011
Koch, Andreas; Lind, Karin et al.
Discovery of a Super-Li-rich Turnoff Star in the Metal-poor Globular Cluster NGC 6397
ApJ 738, L29(2011)

2.
8/2011
Koch, Andreas; McWilliam, Andrew
A Differential Chemical Element Analysis of the Metal-poor Globular Cluster NGC 6397
AJ 142, 63(2011)

1.
7/2011
Lianou, S.; Grebel, E. K.; Koch, A.
Spectroscopic versus photometric metallicities: Milky Way dwarf spheroidal companions as a test case
A&A 531, A152(2011)

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