Other
Scientific paper
Jul 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002hst..prop.9539f&link_type=abstract
HST Proposal ID #9539
Other
Hst Proposal Id #9539 Galaxies
Scientific paper
We will calculate the evolution of the mass and luminosity functions of star cluster systems {numbers of clusters per unit mass and luminosity} resulting from the disruption of clusters by two-body relaxation, gravitational shocks, dynamical friction, and stellar evolution. In particular, we will determine how the mass and luminosity functions vary with age, distance from the center of the host galaxy, and the mass, size, presence or absence of a disk, and other properties of the host galaxy. Our calculations will be made with extensions of the models recently developed by Fall & Zhang {2001}. The results of these calculations will be compared with the many mass and luminosity functions of star cluster systems derived from HST and other observations. This will indicate how much the cluster systems have been eroded by disruption and how much of the field stellar populations in galaxies is the debris of disrupted clusters. Another outcome of this investigation will be a better understanding of when the peak of the luminosity function can or cannot be used reliably as a standard candle for distance determinations.
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