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Chemical Abundances of Metal-poor stars in Dwarf Galaxies

Published online by Cambridge University Press:  09 May 2016

Kim A. Venn ,
Pascale Jablonka ,
Vanessa Hill ,
Else Starkenburg ,
Bertrand Lemasle ,
Matthew Shetrone ,
Mike Irwin ,
John Norris ,
David Yong  and
Gerry Gilmore
...Show all authors
Kim A. Venn
Affiliation:
Dept. of Physics & Astronomy, University of Victoria, Victoria, BC, V8P 5C2, Canada email: kvenn@uvic.ca
Pascale Jablonka
Affiliation:
Laboratoire d'astrophysique, EPFL, Observatoire de Sauverny, 1290 Versoix, Switzerland
Vanessa Hill
Affiliation:
Obs. de la Cote d'Azur, 06304 Nice Cedex 4, France
Else Starkenburg
Affiliation:
Leibniz-Institute fur Astrophysik Potsdam, 14482 Potsdam, Germany
Bertrand Lemasle
Affiliation:
Anton Pannekoek Inst. for Astronomy, Univ. of Amsterdam, 1090 GE Amsterdam, Netherlands
Matthew Shetrone
Affiliation:
McDonald Observatory, Univ. of Texas at Austin, Austin TX 78712, USA
Mike Irwin
Affiliation:
Institute of Astronomy, Univ. of Cambridge, Madingley Road, Cambridge, CB3 0HA, UK
John Norris
Affiliation:
RSAA, Australian National Univ., Mount Stromlo Observatory, Weston ACT 2611, Australia
David Yong
Affiliation:
RSAA, Australian National Univ., Mount Stromlo Observatory, Weston ACT 2611, Australia
Gerry Gilmore
Affiliation:
Institute of Astronomy, Univ. of Cambridge, Madingley Road, Cambridge, CB3 0HA, UK
Stephania Salvadori
Affiliation:
Kapteyn Astronomical Inst., Univ. of Groningen, 9747 AD Groningen, Netherlands
Asa Skuladottir
Affiliation:
Kapteyn Astronomical Inst., Univ. of Groningen, 9747 AD Groningen, Netherlands
Eline Tolstoy
Affiliation:
Kapteyn Astronomical Inst., Univ. of Groningen, 9747 AD Groningen, Netherlands
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Abstract

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Stars in low-mass dwarf galaxies show a larger range in their chemical properties than those in the Milky Way halo. The slower star formation efficiency make dwarf galaxies ideal systems for testing nucleosynthetic yields. Not only are alpha-poor stars found at lower metallicities, and a higher fraction of carbon-enhanced stars, but we are also finding stars in dwarf galaxies that appear to be iron-rich. These are compared with yields from a variety of supernova predictions.

Keywords

stars: abundancesgalaxies: dwarfevolutionLocal Groupstellar content
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 11 , Issue S317: The General Assembly of Galaxy Halos: Structure, Origin and Evolution , August 2015 , pp. 159 - 163
Copyright
Copyright © International Astronomical Union 2016 

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