The recent star formation history in NGC 1569

Details The recent star formation history in NGC 1569 The recent star formation history in NGC 1569

Dec 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998mcdg.proc..217t&link_type=abstract

The Magellanic Clouds and Other Dwarf Galaxies, Proceedings of the Bonn/Bochum-Graduiertenkolleg Workshop, held at the Physikzen

Other

Colour-Magnitude Diagrams, Star Formation Bursts, Stellar Populations

Scientific paper

We present WFPC2-HST photometry of the resolved stellar population in the irregular galaxy NGC 1569. The data are interpreted using theoretical simulations based on stellar evolution models. We find that the field of NGC 1569 has recently experienced a global burst of star formation of duration 0.1 Gyr, ended 7-10 Myr ago. During the burst, the SF rate was approximately constant and, if quiescent periods occurred, they lasted less than 10 Myr. The level of the SF rate, when scaled for the surveyed area, is 10-100 times larger than that in the most active dwarf irregulars in the Local Group. The data are consistent with a Salpeter or slightly steeper IMF.

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