A LARGE, PERIODIC VARIATION IN THE STELLAR WIND OF THETA(1)-ORIONIS-C

Authors
WALBORN NR NICHOLS JS
Citation
Nr. Walborn et Js. Nichols, A LARGE, PERIODIC VARIATION IN THE STELLAR WIND OF THETA(1)-ORIONIS-C, The Astrophysical journal, 425(1), 1994, pp. 120000029-120000032
Citations number
17
Categorie Soggetti
Astronomy & Astrophysics
Journal title
The Astrophysical journal → ACNP
ISSN journal
0004637X
Volume
425
Issue
1
Year of publication
1994
Part
2
Pages
120000029 - 120000032
Database
ISI
SICI code
0004-637X(1994)425:1<120000029:ALPVIT>2.0.ZU;2-9
Abstract
A period of 15.4 days, recently discovered by Stahl et al. from intens ive monitoring of Halpha emission in theta1 Ori C during 1992-1993, ha s been found to phase large variations in the C IV lambdalambda1548, 1 551 wind profile of this star previously reported from IUE high-resolu tion data obtained during 1978-1983. These stellar-wind variations are among the largest observed in O stars not known to be components of i nteracting binaries; the strict periodicity is unique among apparently single O stars and constitutes an important constraint on the unknown origin of the phenomenon.