Astronomy and Astrophysics – Astronomy
Scientific paper
Jun 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008aspc..388..401f&link_type=abstract
Mass Loss from Stars and the Evolution of Stellar Clusters ASP Conference Series, Vol. 388, proceedings of the conference held 2
Astronomy and Astrophysics
Astronomy
Scientific paper
Masses of unresolved young star clusters derived from spectro-photometric 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.
Boily Christian M.
Deiters Stefan
Fleck Jean-Julien
Lancon Ariane
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