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The Star Formation History of M33's Outer Regions

Published online by Cambridge University Press:  01 December 2006

M. K. Barker ,
A. Sarajedini ,
D. Geisler ,
P. Harding  and
R. Schommer
M. K. Barker
Affiliation:
Department of Astronomy, University of Florida, Gainesville, FL 32611, USA email: mbarker@astro.ufl.edu, ata@astro.ufl.edu
A. Sarajedini
Affiliation:
Department of Astronomy, University of Florida, Gainesville, FL 32611, USA email: mbarker@astro.ufl.edu, ata@astro.ufl.edu
D. Geisler
Affiliation:
Grupo de Astronomia, Departamento de Fisica, Universidad de Concepción, Casilla 160-C, Concepción, Chile email: dgeisler@astro-udec.cl
P. Harding
Affiliation:
Astronomy Department, Case Western Reserve University, 10900 Euclid Avenue, Cleveland, OH 44106 email: harding@dropbear.case.edu
R. Schommer
Affiliation:
Cerro Tololo Inter-American Observatory, National Optical Astronomy Observatories, Casilla 603, La Serena, Chile
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Abstract

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The stellar populations of a galaxy are a fossil record of its formation and evolution and the various physical processes involved. Therefore, studying the resolved stellar populations of nearby galaxies can provide important constraints on their structure, formation, and evolution. To that end, we have obtained VI photometry with the Advanced Camera for Surveys on the Hubble Space Telescope for three fields at deprojected radii Rdp ∼ 9 − 13 kpc (∼ 4 − 6 visual scale lengths) along M33's southeast minor axis. We present results for the star formation history (SFH) of these fields based on the technique of synthetic CMD fitting.

Keywords

Local Group galaxies: individual (M33) – galaxies: stellar content – galaxies: evolution – galaxies: structure – galaxies: abundances
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 2 , Symposium S241: Stellar Populations as Building Blocks of Galaxies , December 2006 , pp. 315 - 316
Copyright
Copyright © International Astronomical Union 2007

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