775 citations · 12.1k across the 141 of their papers we have counts for
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Dynamical mixing of two stellar populations in globular clusters
T. Decressin, H. Baumgardt, P. Kroupa
Stars in globular clusters (GCs) exhibit a peculiar chemical pattern with strong abundance variations in light elements along with a constant abundance in heavy elements. These abu…
High M/L ratios of UCDs: a variation of the IMF?
S. Mieske, J. Dabringhausen, P. Kroupa +2
Various studies have established that the dynamical M/L ratios of ultra-compact dwarf galaxies (UCDs) tend to be at the limit or beyond the range explicable by standard stellar pop…
High mass-to-light ratios of UCDs - Evidence for dark matter ?
Holger Baumgardt, Steffen Mieske
Ultra-compact dwarf galaxies (UCDs) are stellar systems with masses of around 10^7 to 10^8 Msun and half mass radii of 10-100 pc. They have some properties in common with massive g…
Origin of the S Stars in the Galactic Center
Ulf Löckmann, Holger Baumgardt, Pavel Kroupa
Over the last 15 years, around a hundred very young stars have been observed in the central parsec of our Galaxy. While the presence of young stars forming one or two stellar disks…
The Nature of UCDs: Internal Dynamics from an Expanded Sample and Homogeneous Database
Steffen Mieske, Michael Hilker, Andres Jordan +9
We have obtained high-resolution spectra of 23 ultra-compact dwarf galaxies (UCDs) in the Fornax cluster with -10.4>M_V>-13.5 mag (10^6<M/M_*<10^8), using FLAMES/Giraffe at the VLT…
The Main Sequence of Star Clusters
Andreas H. W. Kuepper, Pavel Kroupa, Holger Baumgardt
A novel way of looking at the evolution of star clusters is presented. With a dynamical temperature, given by the mean kinetic energy of the cluster stars, and a dynamical luminosi…