Young Massive Clusters in M33

Details Young Massive Clusters in M33 Young Massive Clusters in M33

Jul 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003hst..prop.9828b&link_type=abstract

HST Proposal ID #9828

Computer Science

Hst Proposal Id #9828 Stellar Populations

Scientific paper

Young Massive Clusters {YMC} appear to be abundantly forming in merging galaxies, but are not found in the Milky Way. They provide the opportunity to study the conditions necessary for the formation of massive, compact stellar systems, giving insight into conditions of the earliest epochs of galaxy formation, when ancient Globular Clusters {GC} formed, thus helping to constrain scenarios of galaxy formation and evolution. We propose STIS UV spectroscopy of three extremely young, UV-luminous clusters in the Local Group spiral galaxy M33, selected from our extensive survey with WFPC2 imaging. From multi-band integrated photometry we inferred age upper limits of 10 Myrs: UV spectra will provide precise ages, thus masses, for these objects from the earliest spectral types present, revealed by the strong spectral signatures, and from synthetic spectral modeling. We will be able to assess whether their mass overlap with GC masses, and whether such systems can survive internal dynamical evolution. These young, massive and compact objects provide a key link to the young cluster systems in mergers, and may be the only such counterparts accessible to detailed studies.

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