Abundances of A/F and Am/Fm stars in open clusters as constraints to self-consistent models including transport processes

Details Abundances of A/F and Am/Fm stars in open clusters as constraints to self-consistent models including transport processes Abundances of A/F and Am/Fm stars in open clusters as constraints to self-consistent models including transport processes

Dec 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004iaus..224..209m&link_type=abstract

The A-Star Puzzle, held in Poprad, Slovakia, July 8-13, 2004. Edited by J. Zverko, J. Ziznovsky, S.J. Adelman, and W.W. Weiss,

Physics

4

Diffusion, Stars: Abundances, Stars: Chemically Peculiar, Open Clusters And Associations: Individual: (Coma Ber).

Scientific paper

We describe the current status of a programme we started a few years ago to observe a large number of A/F and Am/Fm stars in open clusters of various ages. Spectra were obtained with the AURELIE and ELODIE spectrographs at a resolving power of about 40000 and S/N ratios from 100 up to 500. Abundances of 11 chemical elements have been derived by using Takeda's (1995) procedure. A short review on previous abundance determinations of A and F dwarfs in open clusters and a progress report on the current status of this project are presented. New abundance determinations for 24 A and F dwarfs in the Coma Berenices cluster are presented. These abundance determinations serve to set constraints to self-consistent evolutionary models of A and F stars including transport processes.

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