Astronomy and Astrophysics – Astrophysics
Scientific paper
May 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005assl..329p...3a&link_type=abstract
Starbursts: From 30 Doradus to Lyman Break Galaxies, Held in Cambridge, UK, 6-10 September 2004. Edited by R. de Grijs and R.M.
Astronomy and Astrophysics
Astrophysics
Scientific paper
We present our recent efforts to improve the size determinations and photometry of star clusters. This also involves size-dependent aperture corrections, which turn out to depend considerably on the structural properties of the young star clusters. On the basis of these reliably measured sizes, we define a useful observable measure of the compactness of a star cluster, which also describes how strongly it is bound and hence governs its survivability during the evolution of the host galaxy. This compactness and survivability is of major importance for the studies of young star clusters in interacting/merging and starburst galaxies, since it will significantly help our understanding as to which of these clusters will eventually resemble Milky Way globular cluster-type objects. From our studies we can draw conclusions, e.g., about the relation between the cluster properties (compactness, masses, ...) and the properties of the starburst in which they are born. This will also improve our understanding about the evolution of galaxies from high redshifts to the present. We will show applications of our new tools to young star cluster systems in nearby starburst galaxies. In addition, we give an outlook to a near-future spectroscopic metatool, the Legacy Tool, connecting a large number of existing models in this field.
Alvensleben Uta Fritze--v.
Anders Peter
de Grijs Richard
Gieles Mark
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