CHEMICAL EVOLUTION OF THE ORION ASSOCIATION - IV - THE OXYGEN AND IRON ABUNDANCES OF F-STARS AND G-STARS

Authors
CUNHA K SMITH VV LAMBERT DL
Citation
K. Cunha et al., CHEMICAL EVOLUTION OF THE ORION ASSOCIATION - IV - THE OXYGEN AND IRON ABUNDANCES OF F-STARS AND G-STARS, The Astrophysical journal, 493(1), 1998, pp. 195-205
Citations number
38
Categorie Soggetti
Astronomy & Astrophysics
Journal title
The Astrophysical journal → ACNP
ISSN journal
0004637X
Volume
493
Issue
1
Year of publication
1998
Part
1
Pages
195 - 205
Database
ISI
SICI code
0004-637X(1998)493:1<195:CEOTOA>2.0.ZU;2-F
Abstract
Oxygen and iron abundances are derived for a sample of pre-main-sequen ce F and G stars of the Orion association. Results for association mem bers are compared with results published previously for main-sequence B stars in the association. The abundances reveal that the F and G sta rs exhibit the pattern of abundances shown by the main-sequence B star s: the stars have a single iron abundance, but there is a star-to-star variation of oxygen abundance. Oxygen-rich and oxygen-poor stars are roughly segregated on the sky.