techniques: spectroscopic; stars: magnetic fields; stars: individual (HD 191612; HD 108; HD 148937)
Abstract :
[en] Only 5 Of?p stars have been identified in the Galaxy. Of these, 3 have been studied in detail, and within the past 5 years magnetic fields have been detected in each of them. The observed magnetic and spectral characteristics are indicative of organised magnetic fields, likely of fossil origin, confining their supersonic stellar winds into dense, structured magnetospheres. The systematic detection of magnetic fields in these stars strongly suggests that the Of?p stars represent a general class of magnetic O-type stars.
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Wade, Gregg A; RMC, Canada
Grunhut, Jason H; RMC, Canada
Marcolino, Wagner L F; ONB, Brazil
Martins, Fabrice; GRAAL, France
Howarth, Ian D; UCL, UK
Nazé, Yaël ; Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Astrophysique observationnelle (sol et espace)
Walborn, Nolan R; STScI, USA
Language :
English
Title :
Of?p stars: a class of slowly rotating magnetic massive stars
Publication date :
01 July 2011
Event name :
IAU Symposium no. 272
Event date :
19-23 July 2010
Audience :
International
Main work title :
Active OB stars: structure, evolution, mass loss and critical limits
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Bibliography
Donati, J.-F., Howarth, I. D., Bouret, J.-C., Petit, P. et al. 2006, MNRAS, 365, L6
Martins, F., Donati, J.-F., Marcolino, W. L. F., Bouret, J.-C. et al. 2010, MNRAS 407, 1423
Nazé, Y., Ud-Doula, A., Spano, M., Rauw, G. et al. 2010, A&A 520A, 59
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