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Paper: On the Mass of Dense Star Clusters in Starburst Galaxies from Spectrophotometry
Volume: 388, Mass Loss from Stars and the Evolution of Stellar Clusters
Page: 401
Authors: Fleck, J.-J.; Boily, Chr.M.; Lançon, A.; Deiters, S.
Abstract: Masses of unresolved young star clusters derived from spectrophotometric data may well be off by a factor of 2 or more once the migration of massive stars driven by mass segregation is accounted for. We quantify this effect for a large set of cluster parameters, including variations in the stellar IMF, the intrinsic cluster mass, and mean mass density. Gas-dynamical models coupled with the Cambridge stellar evolution tracks allow us to monitor the evolution with time of the ratio of actual to apparent mass through the parameter η with different initial conditions. A scheme to recover the real cluster mass given measured half-light radius, one-dimensional velocity dispersion and age has been derived from this study.
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