ORBi: Charpinet S. - New advances in asteroseismology of pulsating hot subdwarf stars

Reference : New advances in asteroseismology of pulsating hot subdwarf stars


	Document type :	Scientific congresses and symposiums : Paper published in a journal
	Discipline(s) :	Physical, chemical, mathematical & earth Sciences : Space science, astronomy & astrophysics
	To cite this reference:	http://hdl.handle.net/2268/109270

Title :	New advances in asteroseismology of pulsating hot subdwarf stars
Language :	English
Author, co-author :	Charpinet, S. [Laboratoire d'Astrophysique de Toulouse-Tarbes, Université de Toulouse, CNRS, 14 av. E. Belin, 31400 Toulouse, France]
	Van Grootel, Valérie [Université de Liège - ULg > 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, G. [Université de Montréal, C.P. 6128, Succ. Centre-Ville, Montréal, QC H3C 3J7, Canada]
	Brassard, P. [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]
Publication date :	1-Nov-2010
Journal title :	Highlights of Astronomy
Volume :	15
Pages :	357-357
On invitation :	No
Audience :	International
Event name :	International Astronomical Union
Event organizer :	International Astronomical Union
Event country :	Brésil
Keywords :	[en] 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.
Permalink :	http://hdl.handle.net/2268/109270
DOI :	10.1017/S1743921310009774
Other URL :	http://adsabs.harvard.edu/abs/2010HiA....15..357C

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