Metallicity of the pre-main sequence double-lined, eclipsing binary RS Cha

Details Metallicity of the pre-main sequence double-lined, eclipsing binary RS Cha Metallicity of the pre-main sequence double-lined, eclipsing binary RS Cha

Dec 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004sf2a.conf..271a&link_type=abstract

SF2A-2004: Semaine de l'Astrophysique Francaise, meeting held in Paris, France, June 14-18, 2004. Edited by F. Combes, D. Barret

Astronomy and Astrophysics

Astrophysics

Scientific paper

A large number of spectra of the PMS eclipsing binary RS Cha (Herbig Ae star) were obtained with the GIRAFFE spectrograph at the SAAO, at 35000 resolution. We use these spectra to measure the metallicity of both components of his binary system. Knowledge of this metallicity, together with determinations of mass and radius for both components, will serve as powerful constraints for the modelling of the internal structure and evolution of this system, as well as validation for the CESAM stellar evolution code for the PMS phase at intermediate masses. In this poster, we present the method we use for measuring the metallicity of both components, as well as the first results.

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