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Chemical Analysis of Fornax dwarf spheroidal with VLT/FLAMES

Published online by Cambridge University Press:  21 April 2007

E. Emsellem ,
H. Wozniak ,
G. Massacrier ,
J.-F. Gonzalez ,
J. Devriendt ,
N. Champavert ,
B. Letarte ,
V. Hill  and
E. Tolstoy
B. Letarte
Affiliation:
Kapteyn Astronomical Institute
V. Hill
Affiliation:
Observatoire de Paris
E. Tolstoy
Affiliation:
Kapteyn Astronomical Institute
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Abstract

The Fornax dSph is a nearby dwarf spheroidal galaxy with five globular clusters and a complex star formation history. It is one of the most massive dwarf spheroidal galaxies in the Local Group. Using the FLAMES/GIRAFFE spectrograph on the VLT, we have obtained high resolution (R ~ 20 000) spectra for 80 Red Giant Branch stars in the central 25' of the Fornax dSph. We present abundance ratios for some of the elements we have in our analysis, including alpha (Mg and Ca), iron-peak (Fe and Ni) and heavy (Y, Ba, Eu) elements. We compare our results with the Milky Way (MW) and our recent VLT/UVES abundance determinations of nine individual stars in Fornax globular clusters.

Type
Research Article
Information
European Astronomical Society Publications Series , Volume 24: CRAL-2006. Chemodynamics: From First Stars to Local Galaxies , 2007 , pp. 33 - 38
Copyright
© EAS, EDP Sciences, 2007

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