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ANDRIEVSKY , Sergei

Last name: ANDRIEVSKY

First name: Sergei

August 10, 2009 (v1)

Conference paper

Metadata-only

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

Spite, Monique Spite, François Bonifacio, Piercarlo

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.

Uploaded on: December 3, 2022
2010 (v1)

Journal article

Metadata-only

Non-LTE abundances of Mg and K in extremely metal-poor stars and the evolution of [O/Mg], [Na/Mg], [Al/Mg], and [K/Mg] in the Milky Way

Andrievsky, Sergei Spite, Monique Korotin, S. A.

Aims: LTE abundances of light elements in extremely metal-poor (EMP) stars have been previously derived from high quality spectra. New derivations, free from the NLTE effects, will better constrain the models of the Galactic chemical evolution and the yields of the very first supernovae. Methods: The NLTE profiles of the magnesium and...

Uploaded on: December 3, 2022