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The star formation history of the Fornax dwarf spheroidal galaxy

Published online by Cambridge University Press:  13 April 2010

Enrico V. Held
Affiliation:
Osservatorio Astronomico di Padova, INAF email: enrico.held@oapd.inaf.it
Eline Tolstoy
Affiliation:
Kapteyn Astronomical Institute, Groningen
Luca Rizzi
Affiliation:
Joint Astronomy Centre, Hilo, USA
Mary Cesetti
Affiliation:
Osservatorio Astronomico di Padova, INAF email: enrico.held@oapd.inaf.it
Andrew A. Cole
Affiliation:
School of Mathematics and Physics, University of Tasmania, Hobart, Australia
Giuseppina Battaglia
Affiliation:
European Southern Observatory, Garching, Germany
Gary S. Da Costa
Affiliation:
Research School of Astronomy and Astrophysics, Australian National University
Marco Gullieuszik
Affiliation:
Osservatorio Astronomico di Padova, INAF email: enrico.held@oapd.inaf.it
Mario Mateo
Affiliation:
Department of Astronomy, University of Michigan, Ann Arbor, MI 48109-1042, USA
Edward W. Olszewski
Affiliation:
Steward Observatory, The University of Arizona, Tucson, AZ, USA
Matthew G. Walker
Affiliation:
Institute of Astronomy, University of Cambridge, United Kingdom
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Abstract

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We present the first results of a comprehensive HST study of the star-formation history of Fornax dSph, based on WFPC2 imaging of 7 Fornax fields. Our observations reach the oldest main-sequence turnoffs, allowing us to address fundamental questions of dwarf galaxy evolution, such as the spatial variations in the stellar content, and whether the old stellar population is made up of stars formed in a very early burst or the result of a more continuous star formation.

Type
Poster Papers
Copyright
Copyright © International Astronomical Union 2010

References

Battaglia, G., et al. 2006, A&A, 459, 423Google Scholar
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Letarte, B., Hill, V., Tolstoy, E., et al. 2009, A&A, submittedGoogle Scholar
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