559 citations · 9.7k across the 192 of their papers we have counts for
8 papers · 1 filter
Kinematics in Hickson Compact Group 90
Leonardo Castaneda, Michael Hilker
Using long-slit spectra observed at the VLT (ESO, Paranal) in May 2002, we studied the stellar kinematics in the core of the Hickson Compact Group 90. The line of sight velocity di…
Discovery of two M32 twins in Abell 1689
S. Mieske, L. Infante, M. Hilker +5
The M31 satellite galaxy M32 has long been considered an object of unique properties, being the most extreme example of the very rare compact elliptical galaxy class. Here we prese…
The properties of ultra-compact dwarf galaxies and their possible origin
Michael Hilker, Steffen Mieske
In this contribution the discovery and properties of ultra-compact dwarf galaxies are presented, and their possible origin is discussed. This new type of galaxy resides in the core…
The extended star formation history of omega Centauri
Michael Hilker, Andrea Kayser, Tom Richtler +1
For the first time, the abundances of a large sample of subgiant and turn-off region stars in omega Centauri have been measured, the data base being medium resolution spectroscopy…
On-axis spectroscopy of the z=0.144 radio-loud quasar HE 1434-1600: an elliptical host with a highly ionized ISM
G. Letawe, F. Courbin, P. Magain +4
VLT on-axis optical spectroscopy of the z=0.144 radio-loud quasar HE 1434-1600 is presented. The spatially resolved spectra of the host galaxy are deconvolved and separated from th…
Fornax compact object survey FCOS: On the nature of Ultra Compact Dwarf galaxies
S. Mieske, M. Hilker, L. Infante
The results of the Fornax Compact Object Survey (FCOS) are presented. The FCOS aims at investigating the nature of the Ultra Compact Dwarf galaxies (UCDs) recently discovered in th…
The Globular Cluster System of NGC 1399: III. VLT Spectroscopy and Database
B. Dirsch, T. Richtler, D. Geisler +9
Radial velocities of 468 globular clusters around NGC 1399, the central galaxy in the Fornax cluster, have been obtained with FORS2 and the Mask Exchange Unit (MXU) at the ESO Very…
The Globular Cluster System of NGC 1399. II. Kinematics of a Large Sample of Globular Clusters
T. Richtler, B. Dirsch, K. Gebhardt +9
We study the kinematics and dynamics of the globular cluster system of NGC 1399, the central galaxy of the Fornax cluster. The observational data consists of medium resolution spec…