The Star Formation History of the Blue Compact Dwarf Galaxy SBS 1415+437

Details The Star Formation History of the Blue Compact Dwarf Galaxy SBS 1415+437 The Star Formation History of the Blue Compact Dwarf Galaxy SBS 1415+437

Dec 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001aas...199.2107k&link_type=abstract

American Astronomical Society, 199th AAS Meeting, #21.07; Bulletin of the American Astronomical Society, Vol. 33, p.1341

Astronomy and Astrophysics

Astronomy

Scientific paper

We present the star formation history of the cometary blue compact dwarf galaxy SBS 1415+437, determined by comparing Hubble Space Telescope data to synthetic color-magnitude diagrams. Despite previous claims that this galaxy is as young as 100 Myr, we find that its stellar content requires star formation earlier than 500 Myr ago. In particular, the observed I-band luminosity function shows a large population of stars at magnitudes fainter than MI=-4, which are not produced in younger models. Our models also show enhanced star formation for the past 10 Myr, and provide a distance modulus of 29.78+/-0.3 magnitudes. This project was funded by a Keck Collaborative Research Grant at Skidmore College.

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