EDP Sciences
Free access
Issue
A&A
Volume 398, Number 3, February II 2003
Page(s) 1121 - 1135
Section Formation and evolution of planetary systems
DOI http://dx.doi.org/10.1051/0004-6361:20021711


A&A 398, 1121-1135 (2003)
DOI: 10.1051/0004-6361:20021711

Automated spectroscopic abundances of A and F-type stars using echelle spectrographs

II. Abundances of 140 A-F stars from ELODIE and CORALIE
D. Erspamer and P. North

Institut d'astronomie de l'Université de Lausanne, 1290 Chavannes-des-Bois, Switzerland
(Received 14 June 2002 / Accepted 26 August 2002)

Abstract
Using the method presented in Erspamer & North (2002, hereafter Paper I), 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  ${\rm km~s^{-1}}$. There is no correlation between abundances and $V\sin{i}$, 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 $V\sin{i}$ suggested by Varenne & Monier (1999) is not confirmed. The predictions of the Montréal models (e.g. Richard et al. 2001) are not fulfilled in general. However, a correlation between $\left[\frac{{\rm Fe}}{{\rm H}}\right]$ and $\log{g}$is found for stars of 1.8 to 2.0  $M_\odot$. Various possible causes are discussed, but the physical reality of this correlation seems inescapable.


Key words: techniques: spectroscopic -- stars: abundances -- stars: chemically peculiar -- stars: fundamental parameters

Offprint request: P. North, Pierre.North@obs.unige.ch

SIMBAD Objects
Tables at the CDS



© ESO 2003

What is OpenURL?

The OpenURL standard is a protocol for transmission of metadata describing the resource that you wish to access.

An OpenURL link contains article metadata and directs it to the OpenURL server of your choice. The OpenURL server can provide access to the resource and also offer complementary services (specific search engine, export of references...). The OpenURL link can be generated by different means.

  • If your librarian has set up your subscription with an OpenURL resolver, OpenURL links appear automatically on the abstract pages.
  • You can define your own OpenURL resolver with your EDPS Account.
    In this case your choice will be given priority over that of your library.
  • You can use an add-on for your browser (Firefox or I.E.) to display OpenURL links on a page (see http://www.openly.com/openurlref/). You should disable this module if you wish to use the OpenURL server that you or your library have defined.