Models of metal-poor stars with gravitational settling and radiative accelerations

G Michaud; O Richard; J Richer; D A VandenBerg

Acte de colloque

Models of metal-poor stars with gravitational settling and radiative accelerations

G Michaud, O Richard, J Richer et D A VandenBerg

New Horizons in Globular Cluster Astronomy: Proceedings of International Conference, Padua, Italy, 2002, Vol.296, pp.220-221

ASTRONOMICAL SOCIETY OF THE PACIFIC CONFERENCE SERIES

01/01/2003

Résumé

Astronomy & Astrophysics

Physical Sciences

Science & Technology

It is shown that when radiative accelerations are included in evolutionary model calculations, overabundances of many metals axe produced in stars with T-eff greater than or equal to 5900K. The abundance spread around turnoff is small in clusters with [Fe/H](0) = -2.01 at 13.5 Gyr as may apply to NGC6397. An age of around 13.5 Gyr is obtained for M92.

Indicateurs

1 Consultations de la notice

Détails

Titre: Models of metal-poor stars with gravitational settling and radiative accelerations
Créateurs - sans rôle: G Michaud
O Richard
J Richer
D A VandenBerg
Contributeurs - sans rôle: G Piotto
G Meylan
S G Djougovski
M Riello
Détails de publication: New Horizons in Globular Cluster Astronomy: Proceedings of International Conference, Padua, Italy, 2002, Vol.296, pp.220-221
Publications en série: ASTRONOMICAL SOCIETY OF THE PACIFIC CONFERENCE SERIES
Éditeur: Astronomical Soc Pacific
Nombre de pages: 2
Identifiants: 99147743909311
Unité académique: Laboratoire Univers et Particules de Montpellier - LUPM
Langue: English
Type de ressource: Conference proceeding