Automated spectroscopic abundances of A and F-type stars using echelle spectrographs II. Abundances of 140 A-F stars from ELODIE and CORALIE

Details Automated spectroscopic abundances of A and F-type stars using echelle spectrographs II. Abundances of 140 A-F stars from ELODIE and CORALIE Automated spectroscopic abundances of A and F-type stars using echelle spectrographs II. Abundances of 140 A-F stars from ELODIE and CORALIE

2002-10-02

arxiv.org/abs/astro-ph/0210065v1

Astron.Astrophys. 398 (2003) 1121-1136

Astronomy and Astrophysics

Astrophysics

17 pages, 14 figures. Accepted for publication in A&A

Scientific paper

10.1051/0004-6361:20021711

Using the method presented in Erspamer & North (2002, Paper I hereafter), detailed abundances of 140 stars are presented. The uncertainties characteristic of this method are presented and discussed. In particular, we show that for a S/N ratio higher than 200, the method is applicable to stars with a rotational velocity as high as 200 km/s. There is no correlation between abundances and vsini, except a spurious one for Sr, Sc and Na which we explain by the small number of lines of these elements combined with a locally biased continuum. Metallic giants (Hauck 1986) show larger abundances than normal giants for at least 8 elements: Al, Ca, Ti, Cr, Mn, Fe, Ni and Ba. The anticorrelation for Na, Mg, Si, Ca, Fe and Ni with vsini suggested by Varenne and Monier (1999) is not confirmed. The predictions of the Montreal models (e.g. Richard et al. 2001) are not fulfilled in general. However a correlation between [Fe/H] and logg is found for stars of 1.8 to 2.0 Mo. Various possible causes are discussed, but the physical reality of this correlation seems inescapable.

Affiliated with

Also associated with

No associations

Rating

Automated spectroscopic abundances of A and F-type stars using echelle spectrographs II. Abundances of 140 A-F stars from ELODIE and CORALIE does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Automated spectroscopic abundances of A and F-type stars using echelle spectrographs II. Abundances of 140 A-F stars from ELODIE and CORALIE, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Automated spectroscopic abundances of A and F-type stars using echelle spectrographs II. Abundances of 140 A-F stars from ELODIE and CORALIE will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-164676