Publications (77)
The Galactic evolution of sulphur as traced by globular clusters
Nikolay Kacharov, Andreas Koch, Elisabetta Caffau +1
A first measurement of the Proper Motion of the Leo II dwarf spheroidal galaxy
Sébastien Lépine, Andreas Koch, R. Michael Rich +1
A Wide-Field View of Leo II -- A Structural Analysis Using the SDSS
Matthew G. Coleman, Katrin Jordi, Hans-Walter Rix +2
A spectroscopic binary in the Hercules dwarf spheroidal galaxy
Andreas Koch, Terese Hansen, Sofia Feltzing +1
Discovery of a super-Li rich turn-off star in the metal poor globular cluster NGC 6397
Andreas Koch, Karin Lind, R. Michael Rich
Detailed chemical abundance analysis of the thick disk star cluster Gaia 1
Andreas Koch, Terese T. Hansen, Andrea Kunder
The Halos and Environments of Nearby Galaxies (HERON) Survey
R. Michael Rich, Noah Brosch, James Bullock +7
ThreadPoolComposer - An Open-Source FPGA Toolchain for Software Developers
Jens Korinth, David de la Chevallerie, Andreas Koch
Galactic Pal-eontology: Abundance Analysis of the Disrupting Globular Cluster Palomar 5
Andreas Koch, Patrick Côté
Kinematics of outer halo globular clusters: M 75 and NGC 6426
Andreas Koch, Michael Hanke, Nikolay Kacharov
A differential chemical element analysis of the metal poor Globular Cluster NGC 6397
Andreas Koch, Andrew McWilliam
Kinematics at the Edge of the Galactic Bulge: Evidence for Cylindrical Rotation
Christian D. Howard, R. Michael Rich, Will Clarkson +9
The Observed properties of Dark Matter on small spatial scales
Gerard Gilmore, Mark I. Wilkinson, Rosemary F. G. Wyse +3
Another look at the size of the low-surface brightness galaxy VCC 1661 in the Virgo Cluster
Andreas Koch, Christine S. Black, R. Michael Rich +3
Evidence for a chemical enrichment coupling of globular clusters and field stars in the Fornax dSph
Benjamin Hendricks, Corrado Boeche, Christian I. Johnson +4
An intermediate-band photometric study of the "Globular Cluster" NGC 2419
Andreas Koch, Matthias Frank, Sofia Feltzing +3
ATHOS: On-the-fly stellar parameter determination of FGK stars based on flux ratios from optical spectra
Michael Hanke, Camilla Juul Hansen, Andreas Koch +1
A comprehensive chemical abundance study of the outer halo globular cluster M 75
Nikolay Kacharov, Andreas Koch, Andrew McWilliam
Chemical element abundances in the outer halo globular cluster M 75
Nikolay Kacharov, Andreas Koch
Metallicity Distribution Functions, Radial Velocities, and Alpha Element Abundances in Three Off-Axis Bulge Fields
Christian I. Johnson, R. Michael Rich, Chiaki Kobayashi +4
Radial velocities of RR Lyrae stars in and around NGC 6441
Andrea Kunder, Arthur Mills, Joseph Edgecomb +9
Spectroscopic confirmation of the low-latitude object FSR 1716 as an old globular cluster
Andreas Koch, Andrea Kunder, Jennifer Wojno
Chemical Abundances for the Outer Halo Cluster Pal 4 from Co-added High-Resolution Spectroscopy
Andreas Koch, Patrick Côté
A tidal tale: detection of multiple stellar streams in the environment of NGC1052
Oliver Müller, R. Michael Rich, Javier Román +6
A statistical analysis of the late-type stellar content in the Andromeda halo
Andreas Koch, R. Michael Rich
Detector Development for the European XFEL: Requirements and Status
Andreas Koch, Markus Kuster, Jolanta Sztuk-Dambietz +1
An inefficient dwarf: Chemical abundances and the evolution of the Ursa Minor dwarf spheroidal galaxy
Ugur Ural, Gabriele Cescutti, Andreas Koch +3
Performance of an LPD prototype detector at MHz frame rates under Synchrotron and FEL radiation
Andreas Koch, Matthew Hart, Tim Nicholls +17
Age Determination of Six Intermediate-age SMC Star Clusters with HST/ACS
Katharina Glatt, Eva K. Grebel, Elena Sabbi +9
Moving Processing to Data: On the Influence of Processing in Memory on Data Management
Tobias Vincon, Andreas Koch, Ilia Petrov
Purveyors of fine halos: Re-assessing globular cluster contributions to the Milky Way halo build-up with SDSS-IV
Andreas Koch, Eva K. Grebel, Sarah L. Martell
A Detection of Gas Associated with the M 31 Stellar Stream
Andreas Koch, Charles W. Danforth, R. Michael Rich +2
The Bulge Radial Velocity Assay (BRAVA): I. Sample Selection and a Rotation Curve
Christian D. Howard, R. Michael Rich, David B. Reitzel +3
Precise abundance analysis of the outer halo globular cluster M 75
Nikolay Kacharov, Andreas Koch
Small-scale hero: massive-star enrichment in the Hercules dwarf spheroidal
Andreas Koch, Francesca Matteucci, Sofia Feltzing
Threshing in Action - The tidal disruption of a dwarf galaxy by the Hydra I Cluster
Andreas Koch, Andreas Burkert, R. Michael Rich +4
Dwarf spheroidal galaxy kinematics and spiral galaxy scaling laws
Paolo Salucci, Mark I. Wilkinson, Matthew G. Walker +5
Metal-poor stars towards the Galactic bulge - a population potpourri
Andreas Koch, Andrew McWilliam, George W. Preston +1
A super-Li rich turnoff star in NGC 6397 - the puzzle persists
Andreas Koch, Karin Lind, Ian B. Thompson +1
A chemical confirmation of the faint Bootes II dwarf Spheroidal Galaxy
Andreas Koch, R. Michael Rich
Kinematic sub-populations in dwarf spheroidal galaxies
Ugur Ural, Mark I. Wilkinson, Andreas Koch +7
Spectroscopic study of the elusive globular cluster ESO452-SC11 and its surroundings
Andreas Koch, Camilla Juul Hansen, Andrea Kunder
Separating the conjoined red clump in the Galactic Bulge: Kinematics and Abundances
Roberto De Propris, R. Michael Rich, Andrea Kunder +8
Major mergers with small galaxies - the discovery of a Magellanic-type galaxy at z=0.12
Andreas Koch, Matthias J. Frank, Anna Pasquali +2
The binary fraction of stars in dwarf galaxies: the case of Leo II
Meghin Spencer, Mario Mateo, Matthew Walker +4
Chemical abundances in a high velocity RR Lyrae star near the bulge
Camilla Juul Hansen, Robert Michael Rich, Andreas Koch +3
Spectroscopic versus Photometric Metallicities: Milky Way Dwarf Spheroidal Companions as a Test Case
Sophia Lianou, Eva K. Grebel, Andreas Koch
A new abundance scale for the globular cluster 47 Tuc
Andreas Koch, Andrew McWilliam
Chemical composition of the outer halo globular cluster Palomar 15
Andreas Koch, Siyi Xu, R. Michael Rich
Complexity in small-scale dwarf spheroidal galaxies
Andreas Koch, Daniel Adén, Eva K. Grebel +1
Status of detector development for the European XFEL
Jolanta Sztuk-Dambietz, Steffen Hauf, Andreas Koch +2
Structural Parameters of Seven SMC Intermediate-Age and Old Star Clusters
Katharina Glatt, Eva K. Grebel, John S. Gallagher III. +9
A differential chemical abundance scale for the globular cluster M5
Andreas Koch, Andrew McWilliam
Sulphur in the metal poor globular cluster NGC 6397
Andreas Koch, Elisabetta Caffau
Strömgren uvby photometry of the peculiar globular cluster NGC 2419
Matthias J. Frank, Andreas Koch, Sofia Feltzing +3
A kinematic study of the Andromeda dwarf spheroidal system
Michelle L. M. Collins, Scott C. Chapman, R. Michael Rich +12
Dwarf spheroidals in the M81 Group - Metallicity distribution functions and population gradients
Sophia Lianou, Eva K. Grebel, Andreas Koch
The puzzling assembly of the Milky Way halo - contributions from dwarf Spheroidals and globular clusters
Andreas Koch, Sebastien Lépine, Seyma ÃalıÅkan
Chemical abundances of metal-poor RR Lyrae stars in the Magellanic Clouds
Raoul Haschke, Eva K. Grebel, Anna Frebel +3
All quiet in the outer halo: chemical abundances in the globular cluster Pal 3
Andreas Koch, Patrick Côté, Andrew McWilliam
The masses of Local Group dwarf spheroidal galaxies: The death of the universal mass profile
Michelle L. M. Collins, Scott C. Chapman, R. M. Rich +12
The Extended Star Formation History of the Andromeda Spheroid at 35 Kpc on the Minor Axis
Thomas M. Brown, Rachael Beaton, Masashi Chiba +14
Abundances and kinematics of carbon-enhanced metal-poor stars in the Galactic halo*; A new classification scheme based on Sr and Ba
Camilla J. Hansen, Terese T. Hansen, Andreas Koch +4
The metal-poor Knee in the Fornax Dwarf Spheroidal Galaxy
Benjamin Hendricks, Andreas Koch, Gustavo A. Lanfranchi +5
4MOST - 4-metre Multi-Object Spectroscopic Telescope
Roelof S. de Jong, Olga Bellido-Tirado, Cristina Chiappini +82
The Bulge Radial Velocity Assay (BRAVA): II. Complete Sample and Data Release
Andrea Kunder, Andreas Koch, R. Michael Rich +13
Neutron-capture element deficiency of the Hercules dwarf spheroidal galaxy
Andreas Koch, Sofia Feltzing, Daniel Aden +1
Triangulum II: a very metal-poor and dynamically hot stellar system
Nicolas F. Martin, Rodrigo A. Ibata, Michelle L. M. Collins +7
Insights from the Outskirts: Chemical and Dynamical Properties in the outer Parts of the Fornax Dwarf Spheroidal Galaxy
Benjamin Hendricks, Andreas Koch, Matthew Walker +3
What is a galaxy? How Cold is Cold Dark Matter? Recent progress in Near Field Cosmology
Gerard Gilmore, Dan Zucker, Mark Wilkinson +6
The chemical composition of a regular halo globular cluster: NGC 5897
Andreas Koch, Andrew McWilliam
Light, Alpha, and Fe-Peak Element Abundances in the Galactic Bulge
Christian I. Johnson, R. Michael Rich, Chiaki Kobayashi +2
R-process and alpha-elements in the Galactic disk: Kinematic correlations
Andreas Koch, E. K. Grebel
Search for an intrinsic metallicity spread in old globular clusters of the Large Magellanic Cloud
Andrés E. Piatti, Andreas Koch
Complexity in small-scale dwarf spheroidal galaxies
Andreas Koch
Ages and Luminosities of Young SMC/LMC Star Clusters and the recent Star Formation History of the Clouds
Katharina Glatt, Eva K. Grebel, Andreas Koch
A high-velocity bulge RR Lyrae variable on a halo-like orbit
Andrea Kunder, R. Michael Rich, Keith Hawkins +21