Hostname: page-component-7bb8b95d7b-wpx69 Total loading time: 0 Render date: 2024-09-24T16:11:14.271Z Has data issue: false hasContentIssue false
  • English
  • Français

Lithium in field Am and normal A–F-type stars

Published online by Cambridge University Press:  13 January 2006

G. Alecian ,
O. Richard ,
S. Vauclair ,
P. North ,
F. Betrix  and
C. Besson
P. North
Affiliation:
Laboratoire d'Astrophysique de l'École Polytechnique Fédérale de Lausanne (EPFL), Observatoire, 1290 Sauverny, Switzerland
F. Betrix
Affiliation:
Formerly at the (now obsolete) Institut d'Astronomie de l'Université de Lausanne, 1290 Chavennes-des-Bois, Switzerland
C. Besson
Affiliation:
Formerly at the (now obsolete) Institut d'Astronomie de l'Université de Lausanne, 1290 Chavennes-des-Bois, Switzerland
Get access

Abstract

Preliminary abundances of lithium and a few other elements have been obtained for 31 field Am stars with good Hipparcos parallaxes, as well as for 36 normal A and F stars. Radial and projected rotational velocities were determined as well. We examine the Li abundance as a function of the stellar parameters: for normal stars, it is clearly bimodal for Teff < 7500 K, while Am-Fm stars are all somewhat Li-deficient in this range. The most Li-deficient stars – either Am or normal – tend to be at least slightly evolved, but the reverse is not true.

Type
Research Article
Information
European Astronomical Society Publications Series , Volume 17: Element Stratification in Stars: 40 Years of Atomic Diffusion , 2005 , pp. 333 - 336
Copyright
© EAS, EDP Sciences, 2005

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)