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Evolution of [O/Mg], [Na/Mg], [Al/Mg], and [K/Mg] in the Galaxy, from a NLTE analysis

Published online by Cambridge University Press:  09 March 2010

M. Spite ,
F. Spite ,
P. Bonifacio ,
V. Hill ,
S. Andrievsky ,
R. Cayrel ,
P. François  and
S. Korotin
M. Spite
Affiliation:
Observatoire de Paris, GEPI, UMR8111 CNRS, France
F. Spite
Affiliation:
Observatoire de Paris, GEPI, UMR8111 CNRS, France
P. Bonifacio
Affiliation:
Observatoire de Paris, GEPI, UMR8111 CNRS, France Osservatorio Astronomico di Trieste, INAF, Italy
V. Hill
Affiliation:
Universit de Nice Sophia-Antipolis, Observatoire de la Cte dAzur, UMR6202 CNRS, France
S. Andrievsky
Affiliation:
Astronomical Observatory, Odessa National University, Isaac Newton Institute of Chile, Odessa branch, Ukraine
R. Cayrel
Affiliation:
Observatoire de Paris, GEPI, UMR8111 CNRS, France
P. François
Affiliation:
Observatoire de Paris, GEPI, UMR8111 CNRS, France
S. Korotin
Affiliation:
Astronomical Observatory, Odessa National University, Isaac Newton Institute of Chile, Odessa branch, Ukraine
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In the framework of he ESO Large Program “First Stars”, high resolution (R=45000) high S/N ratio spectra have been obtained for a sample of Extremely Metal Poor Stars (EMP stars), 35 giants and 18 turnoff stars. Among them 37 have a very low metallicity: [Fe/H]< −2.9.

Keywords

abundancesline:profilesPop IIhalo
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 5 , Symposium S265: Chemical Abundances in the Universe: Connecting First Stars to Planets , August 2009 , pp. 380 - 381
Copyright
Copyright © International Astronomical Union 2010

References

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