Astronomy and Astrophysics – Astronomy
Scientific paper
Jun 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001a%26at...20...85f&link_type=abstract
Astronomical and Astrophysical Transactions, Vol. 20, p. 85 - 88 (2001). In: European astronomy at the turn of the millennium. J
Astronomy and Astrophysics
Astronomy
Methods: Numerical, Galaxies: Interaction, Galaxies: Dwarf Galaxies, Galaxies: Star Clusters, Star Clusters: Merging, Methods: Numerical, Galaxies: Interaction, Galaxies: Dwarf Galaxies, Galaxies: Star Clusters, Star Clusters: Merging
Scientific paper
With this project we want to investigate the future fate of the clusters of young massive starclusters (in this work called super-clusters) found in the tidal features of interacting galaxies. It is very likely that such configurations merge and build a dwarf galaxy object. Therefore we simulate compact super-clusters in the tidal field of a host-galaxy to investigate the influence of orbital or internal parameters. In this report the properties of the resulting merger-object and its dynamical evolution are studied. The surviving star-clusters count for the high specific cluster-frequency of these dwarf satellites and you also find surviving star-clusters along the orbit of the merger-object. The calculations carried out in this project show evidence for the scenario developed by Kroupa (1998), i.e. that dSph-galaxies are the remnants of disrupted dwarf satellites where the stars still resemble the same phase space and can be found as density enhancements in the sky. But because they are not a bound object anymore, mass estimates using virial equilibrium will lead to an unnecessarily high mass-to-light ratio and therefore to a high dark matter content of these objects.
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