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Star Formation History in the Fornax Dwarf Galaxy from HST data

Published online by Cambridge University Press:  25 May 2016

G. Marconi ,
R. Buonanno ,
M. Castellani ,
C. E. Corsi  and
R. Zinn
G. Marconi
Affiliation:
Osservatorio Astronomico di Roma
R. Buonanno
Affiliation:
Osservatorio Astronomico di Roma
M. Castellani
Affiliation:
Osservatorio Astronomico di Roma
C. E. Corsi
Affiliation:
Osservatorio Astronomico di Roma
R. Zinn
Affiliation:
Department of Astronomy, Yale University

Abstract

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Using observations from the Hubble Space Telescope archive, color-magnitude diagrams have been constructed for globular Cluster 4 in the Fornax dSph galaxy and its surrounding field. These diagrams extend below the main-sequence turnoffs and have yielded measurements of the ages of the populations. In particular, from our analysis Cluster 4 shows [Fe/H] ≃ 2.0, a value significantly lower than that derived for the Fornax field ([Fe/H] ≃ −1.40). Putting our results in the frame of the findings of Buonanno et al. (1998) for the Fornax clusters 1, 2, 3 and 5, a global analysis of the properties of Fornax stellar populations has been performed.

Type
Part 2: The Database
Information
Symposium - International Astronomical Union , Volume 192: The Stellar Content of Local Group Galaxies , 1999 , pp. 174 - 178
Copyright
Copyright © Astronomical Society of the Pacific 1999 

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