Article (Scientific journals)
Evidence for short-term variations in two O-type stars
De Becker, Michaël; Linder, Natacha; Rauw, Grégor
2008In Information Bulletin on Variable Stars, 5841, p. 1
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Keywords :
star: spectroscopy; stars: early-type; stars: variables
Abstract :
[en] Only a few O-type stars are known to display short-term (a fraction of a day) variations. Intense spectroscopic monitoring of the ON8V star HD 13268 revealed low amplitude variations with periods of several hours. In addition, observations of the SB1 system HD 15137 revealed variations on a time scale of a few hours. We consider these stars to be a good candidates for non radial pulsations, even though variations related to inhomogeneities in a circumstellar disk can not be rejected.
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
De Becker, Michaël  ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Sciences spatiales
Linder, Natacha ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Groupe d'astrophysique des hautes énergies (GAPHE)
Rauw, Grégor  ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Groupe d'astrophysique des hautes énergies (GAPHE) - Sciences spatiales
Language :
English
Title :
Evidence for short-term variations in two O-type stars
Publication date :
July 2008
Journal title :
Information Bulletin on Variable Stars
ISSN :
0374-0676
eISSN :
1587-2440
Publisher :
Konkoly Observatory, Budapest, Hungary
Volume :
5841
Pages :
1
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 19 December 2008

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