[en] Already suspected to be variable, the O9Ib((f)) supergiant HD 152249 has been the subject of a dedicated follow-up spectroscopic run. We report here on the preliminary results. This star is definitely exhibiting significant line-profile variations which are most probably a sign of the existence of non-radial pulsations. HD 152249 could thus belong to the newly identified group of pulsating OB supergiants.
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Gosset, Eric ; Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Groupe d'astrophysique des hautes énergies (GAPHE)
Sana, H.
Linder, N.
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 line-profile variability in the spectrum of the O supergiant HD 152249: preliminary results
Publication date :
01 July 2009
Event name :
Evolution and Pulsation of. Massive Stars on the Main Sequence and Close to it.
Event place :
Liège, Belgium
Event date :
July 7-11 2008
Event number :
38th LIAC
Audience :
International
Journal title :
Communications in Asteroseismology
ISSN :
1021-2043
eISSN :
2224-8374
Publisher :
Verlag der Österreichischen Akademie der Wissenschaften, Wien, Austria
