A new method to derive star formation histories in dwarf galaxies

Abstract

We present a new method to derive 2D star formation histories in dwarf irregular galaxies. Based on multicolor stellar photometry data we have found that in the Leo A galaxy during the last $\sim$400 Myr star formation was propagating according to the inside-out scenario. Star-forming regions have spread strongly asymmetrically from the center and their present day distribution correlates well with the HI surface density maps.

arXiv comment4 pages, 3 figures, Poster contribution, IAU Symposium 344, Dwarf Galaxies: from the Deep Universe to the Present, (Eds) S. Stierwalt & K. McQuinn

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