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Production and Recycling of Carbon in the Early Galactic Halo

Published online by Cambridge University Press:  27 October 2016

Johannes Andersen ,
Birgitta Nordström  and
Terese T. Hansen
Johannes Andersen
Affiliation:
Dark Cosmology Centre, The Niels Bohr Institute, University of Copenhagen, Juliane Maries Vej 30, DK-2100 Copenhagen, Denmark email: ja@nbi.ku.dk, birgitta@nbi.ku.dk Stellar Astrophysics Centre, Department of Physics and Astronomy, Aarhus University, DK-8000 Aarhus C, Denmark
Birgitta Nordström
Affiliation:
Dark Cosmology Centre, The Niels Bohr Institute, University of Copenhagen, Juliane Maries Vej 30, DK-2100 Copenhagen, Denmark email: ja@nbi.ku.dk, birgitta@nbi.ku.dk Stellar Astrophysics Centre, Department of Physics and Astronomy, Aarhus University, DK-8000 Aarhus C, Denmark
Terese T. Hansen
Affiliation:
Landessternwarte, ZAH, Heidelberg University, Königstuhl 12, Heidelberg, D-69117, Germany email: thansen@lsw.uni-heidelberg.de
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Abstract

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A large fraction of extremely metal-poor halo stars are strongly enriched in carbon (CEMP stars). The standard scenario for their origin is mass transfer in binary systems, but this assumes that they are binaries. If not, the C must have been implanted in their natal clouds from a distant production site(s) in the preceding - possibly first - generation of stars. The binary population of CEMP subgroups can shed light on these processes.

Keywords

Galaxy: haloStars: carbonbinaries: spectroscopicISM: structure
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 11 , General Assembly A29B: Astronomy in Focus , August 2015 , pp. 158 - 159
Copyright
Copyright © International Astronomical Union 2016 

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