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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
Affiliation:
Astronomy Program, School of Physics and Astronomy, Seoul National University, Seoul 151-742, Korea email: mglee@astrog.snu.ac.kr
In-Soo Yuk
Affiliation:
Korea Astronomy and Space Science Institute, 61-1 Hwaam-dong, Yuseong-gu, Daejeon 305-348, Korea email: yukis@kasi.re.kr
Corresponding
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Abstract

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.

Type
Contributed Papers
Copyright
Copyright © International Astronomical Union 2007

References

Dolphin, A. E. 2002, MNRAS, 332, 91CrossRefGoogle Scholar
Lee, M. G., Park, H. S., Park, J. H., Sohn, Y. J., Oh, S. J., Yuk, I. S., Rey, S. C., Lee, S. G, Lee, Y. W., Kim, H. I., HanW, Park, W. W, Park, W.JLee, J. Lee, J.HJeon, Y. B. Jeon, Y. B., & Kim, S. C. 2003, AJ, 126, 2840CrossRefGoogle Scholar
Skillman, E. D., Tolstoy, E., Cole, A. A., Dolphin, A. E., Saha, A., Gallagher, J. S., Dohm-Palmer, R. C., & Mateo, M. 2003, ApJ, 596, 253CrossRefGoogle Scholar
Shetrone, M. D., Côté, P., & Sargent, W. L. W. 2001, ApJ, 548, 592CrossRefGoogle Scholar
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