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Mass-loss and expansion of ultra compact dwarf galaxies through gas expulsion and stellar evolution for top-heavy stellar initial mass functions
J. Dabringhausen, M. Fellhauer, P. Kroupa
(abridged) The dynamical V-band mass-to-light ratios of ultra compact dwarf galaxies (UCDs) are higher than predicted by simple stellar population models with the canonical stellar…
Star clusters as building blocks for dSph galaxies formation
P. Assmann, M. Fellhauer, M. I. Wilkinson
We study numerically the formation of dSph galaxies. Intense star bursts, e.g. in gas-rich environments, typically produce a few to a few hundred young star clusters, within a regi…
Faint Fuzzy Star Clusters in NGC1023 as Remnants of Merged Star Cluster Complexes
R. C. Bruens, P. Kroupa, M. Fellhauer
In the lenticular galaxy NGC1023 a third population of globular clusters (GCs), called faint fuzzies (FFs), was discovered next to the blue and red GC populations by Larsen & Brodi…
Merging time-scales of stellar sub-clumps in young star-forming regions
M. Fellhauer, M. I. Wilkinson, P. Kroupa
Recent observations and hydrodynamical simulations of star formation inside a giant molecular cloud have revealed that, within a star forming region, stars do not form evenly distr…