Metallicity and star formation history of globular clusters

Details Metallicity and star formation history of globular clusters Metallicity and star formation history of globular clusters

Jan 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993cha%26a..17...43z&link_type=abstract

Chinese Astronomy and Astrophysics, Volume 17, Issue 1, p. 43-50.

Astronomy and Astrophysics

Astrophysics

3

Globular Clusters, Star Formation

Scientific paper

Using population synthesis method, the star formation history in globular clusters has been studied. No single star formation mode with a constant star formation rate (SER) and an invariable initial mass function (IMF) can fit the observations of globular clusters. There are at least two stages of star formation: a pollution stage and a starburst stage. In the pollution stage, either the IMF is very peculiar (only form massive stars), or its SFR is so small that the low-mass stars form only a little. A starburst then follows to form most stars in the globular cluster. Within the framework of Fall and Rees'model, the collisions between warm clouds in the two phase medium may provide a suitable external cause to stimulate the starburst.

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