Star Formation in Quiescent Giant Molecular Clouds

Details Star Formation in Quiescent Giant Molecular Clouds Star Formation in Quiescent Giant Molecular Clouds

Sep 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001cxo..prop..758f&link_type=abstract

Chandra Proposal ID #03200381

Physics

Chandra Proposal Id #03200381

Scientific paper

Most stars are formed in rich stellar clusters within giant molecular clouds (GMCs). A wide range in GMC star formation efficiencies exists -- half of GMCs do not have even a single O star. The reason for GMC quiescence is poorly understood. We propose a Chandra ACIS observation of the prototype quiescent GMC, G 216-2.5 or Maddalena's Cloud, which will have extraordinary sensitivity to its present and past star formation rate. This is achieved because pre-main sequence stars of all masses and a wide range of ages have greatly enhanced X-ray emission. Possible outcomes are a episodic star formation, a truncated IMF, or true quiescence. Any of these results will have significant implications for star formation in the Galaxy.

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