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New advances in asteroseismology of pulsating hot subdwarf stars
Charpinet, Stéphane; Van Grootel, Valérie; Randall, S. K. et al.
2010In Proceedings of the International Astronomical Union, 15, p. 357-357
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Keywords :
stars:subdwarfs; stars:oscillations; stars:interiors; stars:rotation
Abstract :
[en] Hot subdwarf stars (of the sdB and sdO type) host three known classes of nonradial pulsators. Two of them feature short period (P ~ 60 - 600 s) accoustic mode oscillations, while the third group is characterized by slow g-mode deformations with periods of ~ 1 - 2h. These pulsations offer favorable grounds to infer some of the internal properties of these objects through asteroseismology. This has been exploited for the rapid p-mode sdB pulsators and the present contribution reviews some of the recent advances in this field. The long period g-mode pulsators, whose vibrations probe much deeper inside the star, are also of high interest. With the advent of space observations using CoRoT and KEPLER, the asteroseismology of these slower oscillators will also become a possibility, and likely contribute to significant breakthroughs in our understanding of these hot and compact stars.
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Charpinet, Stéphane;  Laboratoire d'Astrophysique de Toulouse-Tarbes, Université de Toulouse, CNRS, 14 av. E. Belin, 31400 Toulouse, France
Van Grootel, Valérie  ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Astrophysique stellaire théorique et astérosismologie
Randall, S. K.;  ESO, Karl-Schwarzschild-Str. 2, 85748 Garching bei München, Germany
Green, E. M.;  Steward Observatory, University of Arizona, 933 North Cherry Ave., Tucson, AZ 85721
Fontaine, Gilles;  Université de Montréal, C.P. 6128, Succ. Centre-Ville, Montréal, QC H3C 3J7, Canada
Brassard, Pierre;  Université de Montréal, C.P. 6128, Succ. Centre-Ville, Montréal, QC H3C 3J7, Canada
Chayer, P.;  Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218, USA
Language :
English
Title :
New advances in asteroseismology of pulsating hot subdwarf stars
Publication date :
01 November 2010
Event name :
International Astronomical Union
Event organizer :
International Astronomical Union
Event place :
Brazil
Audience :
International
Journal title :
Proceedings of the International Astronomical Union
ISSN :
1743-9213
eISSN :
1743-9221
Publisher :
Cambridge University Press, Cambridge, United Kingdom
Volume :
15
Pages :
357-357
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 23 January 2012

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