Computer Science
Scientific paper
Dec 1999
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999sf99.proc...48d&link_type=abstract
Star Formation 1999, Proceedings of Star Formation 1999, held in Nagoya, Japan, June 21 - 25, 1999, Editor: T. Nakamoto, Nobeyam
Computer Science
Scientific paper
Blue Compact Dwarf Galaxies are starburst dwarf galaxies forming stars at a rate similar to giant starburst galaxies if scaled to 1011Modot. The star formation is believed to happen in single short lived burst with long period of quiescence in between. Modelisation of the star formation to reproduce the metallicity, and the mixing apparently agree well with this assumption. Previous near-infrared observations showed the presence of an evolved stellar population, probably originating from previous burst. However, our recent near-IR results, based on surface photometry in J, H and K band showed that although the central regions are definitely dominated by young stars, the external regions of BCDGs show a important diffuse excess in K band indicating the presence of a intermediate mass population of stars most probably Asymptotic Giant Branch stars (AGB) and of a much older population of red giant stars. Simple population synthesis including AGBs and RGs reproduces the excess in colors. In this poster, we argue in favor of a slow rate of star formation underlying the episodic burst.
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