The Chemical Evolution of Globular Clusters

Details The Chemical Evolution of Globular Clusters The Chemical Evolution of Globular Clusters

Nov 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005arep...49..863k&link_type=abstract

Astronomy Reports, vol. 49, Issue 11, p.863-870

Astronomy and Astrophysics

Astronomy

2

Scientific paper

The sequence of events determining the initial stages of star formation is analyzed in framework of the self-enrichment scenario. The computations are based on a single-zone chemo-dynamical model. It is shown that the first episode of star formation was characterized by an initial mass function shifted toward massive stars (M ≥ 8M &sun;). We argue that the transition to a star formation with a normal (Salpeter) initial mass function was due to more efficient radiative cooling of the proto-globular cluster gas after its enrichment to a metallicity of Z ˜ 0.02 Z &sun; in agreement with those observed in globular clusters.

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