559 citations · 9.7k across the 192 of their papers we have counts for
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On central black holes in ultra-compact dwarf galaxies
Steffen Mieske, Matthias Frank, Holger Baumgardt +3
CONTEXT: The dynamical mass-to-light (M/L) ratios of massive ultra-compact dwarf galaxies (UCDs) are about 50% higher than predicted by stellar population models. AIMS: Here we inv…
Threshing in Action - The tidal disruption of a dwarf galaxy by the Hydra I Cluster
Andreas Koch, Andreas Burkert, R. Michael Rich +4
We report on the discovery of strong tidal features around a dwarf spheroidal galaxy in the Hydra I galaxy cluster, indicating its ongoing tidal disruption. This very low surface b…
Dynamics of the NGC 4636 globular cluster system II. Improved constraints from a large sample of globular cluster velocities
Ylva Schuberth, Tom Richtler, Michael Hilker +3
We present new radial velocities for 289 globular clusters around NGC 4636, the southernmost giant elliptical galaxy of the Virgo cluster. The data were obtained with FORS2/MXU at…
The specific frequencies of ultra-compact dwarf galaxies
Steffen Mieske, Michael Hilker, Ingo Misgeld
We aim at quantifying the specific frequency of UCDs in a range of environments and at relating this to the frequency of globular clusters (GCs) and potential progenitor dwarf gala…
A deep view on the Virgo cluster core
Stefan Lieder, Thorsten Lisker, Michael Hilker +2
In this study we investigate the optical photometric properties of early-type galaxies in the Virgo cluster core region, by analysing their location on the colour magnitude relatio…
Families of dynamically hot stellar systems over ten orders of magnitude in mass
I. Misgeld, M. Hilker
Dynamically hot stellar systems, whether star clusters or early-type galaxies, follow well-defined scaling relations over many orders of magnitudes in mass. These fundamental plane…
The dark halo of the Hydra I galaxy cluster: core, cusp, cosmological? Dynamics of NGC 3311 and its globular cluster system
T. Richtler, R. Salinas, I. Misgeld +5
NGC 3311 is the central cD galaxy of the Hydra I cluster. We use globular clusters around NGC 3311, combined with kinematical data of the galaxy itself, to investigate the dark mat…
Dynamical versus Stellar Masses of Ultracompact Dwarf Galaxies in the Fornax Cluster
Igor Chilingarian, Steffen Mieske, Michael Hilker +1
The origin of ultracompact dwarf (UCD) galaxies, compact extragalactic stellar systems, is still a puzzle for present galaxy formation models. We present the comprehensive analysis…
Formation Efficiencies of Old Globular Clusters - from Dwarf to Giant Galaxies
I. Y. Georgiev, T. H. Puzia, P. Goudfrooij +1
For the full galaxy mass range, we find that previously observed trends of globular cluster (GC) system scaling parameters (number, luminosity or mass of all GCs in a galaxy normal…
Two formation channels of UCDs in Hickson Compact Groups
C. Da Rocha, S. Mieske, I. Y. Georgiev +3
The formation of ultra-compact dwarf galaxies (UCDs) is believed to be interaction driven, and UCDs are abundant in the cores of galaxy clusters, environments that mark the end-poi…
Globular Cluster Systems in Nearby Dwarf Galaxies: III. Formation Efficiencies of Old Globular Clusters
Iskren Y. Georgiev, Thomas H. Puzia, Paul Goudfrooij +1
We investigate the globular cluster (GC) system scaling parameters as a function of galaxy mass, i.e. specific frequency (S_N), specific luminosity (S_L), specific mass (S_M), and…
The globular cluster system of NGC 1399 V. dynamics of the cluster system out to 80 kpc
Y. Schuberth, T. Richtler, M. Hilker +4
(Abridged) We use the largest set of globular cluster velocities obtained so far of any elliptical galaxy to revise and extend the previous investigations of the dynamics of NGC 13…
The early-type dwarf galaxy population of the Centaurus cluster
I. Misgeld, M. Hilker, S. Mieske
We present a photometric study of the early-type dwarf galaxy population of the Centaurus cluster, aiming at investigating the galaxy luminosity function (LF) and galaxy scaling re…