The star formation history of Leo I

Bibcode
1998mcdg.proc..147G
Gallart, C.; Aparicio, A.; Freedman, W.; Bertelli, G.; Chiosi, C.
Bibliographical reference

The Magellanic Clouds and Other Dwarf Galaxies, Proceedings of the Bonn/Bochum-Graduiertenkolleg Workshop, held at the Physikzentrum Bad Honnef, Germany, January 19-22, 1998, Eds.: T. Richtler and J.M. Braun, Shaker Verlag, Aachen, ISBN 3-8265-4457-9, p. 147-150,

Advertised on:
12
1998
Number of authors
5
IAC number of authors
1
Citations
2
Refereed citations
2
Description
We present results on the star formation history of the Local Group dSph galaxy Leo I, obtained through the analysis of its deep HST color-magnitude diagram (CMD) using model CMDs computed from stellar evolutionary models. Our results show unambiguously that Leo I experienced a major increase of its star formation rate from about 6 Gyr ago to 2 Gyr ago. Some prior star formation possibly ocurred in another discrete episode of enhanced activity lasting 2-3 Gyr. Finally, a low level of star formation continued until 500-200 Myr ago.
Type
Non-refereed

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