Protostars and Planets VI, Heidelberg, July 15-20, 2013

Poster 1K105

An evolutionary model for the Star Formation Rate and Efficiency in collapsing Molecular Clouds

Zamora-Aviles, Manuel (CRyA-UNMA)
Vazquez-Semadeni, Enrique (CRyA-UNMA)

We present a semi-analytical model for the regulation of the Star Formation Rate (SFR) and Efficiency (SFE) in a Giant Molecular Cloud (GMC) undergoing global gravitational collapse, rather than supported by any agents. The SFR regulation is accomplished by erosion of the cloud caused by massive-star feedback. The behavior of the model is shown to correctly reproduce 1) the physical properties of the OMC-1 molecular cloud; 2) the stellar age dispersion in clusters; 3) the location of individual molecular clouds in the Kennicutt-Schmidt diagram; 4) the age/mass sequence of GMCs in the LMC, and 5) the SFR-mass relationship for dense gas in external galaxies.

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