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Star Formation History and Chemical Evolution of Resolved Galaxies: a New Model

Published online by Cambridge University Press:  01 December 2006

Myung Gyoon Lee  and
In-Soo Yuk
Myung Gyoon Lee
Affiliation:
Astronomy Program, School of Physics and Astronomy, Seoul National University, Seoul 151-742, Korea email: [email protected]
In-Soo Yuk
Affiliation:
Korea Astronomy and Space Science Institute, 61-1 Hwaam-dong, Yuseong-gu, Daejeon 305-348, Korea email: [email protected]
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Abstract

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We present a new numerical model of star formation history and chemical evolution using the color-magnitude diagrams of resolved stars in galaxies. Our model differs from previous models in that it generates the simulated color-magnitude diagrams with the metal enrichment law calculated from the galactic chemical evolution model. We present a case of applying our model to a resolved galaxy in the Local Group: the Sextans dwarf spheroidal galaxy. It is found the the primary origin of the radial gradient of stellar population in this galaxy is star formation followed by metallicity.

Keywords

galaxies:evolutiongalaxies:dwarfgalaxies:Local Groupgalaxies:individual (Sextans dwarf spheroidal galaxy)stars: formation
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 2 , Symposium S241: Stellar Populations as Building Blocks of Galaxies , December 2006 , pp. 274 - 278
Copyright
Copyright © International Astronomical Union 2007

References

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