Origin and Pulsation of Hot Subdwarfs

[en] We briefly introduce hot subdwarfs and their evolutionary status before discussing the different types of known pulsators in more detail. Currently, at least six apparently distinct types of variable are known among hot subdwarfs, encompassing p- as well as g-mode pulsators and objects in the Galactic field as well as in globular clusters. Most of the oscillations detected can be explained in terms of an iron opacity mechanism, and quantitative asteroseismology has been very successful for some of the pulsators. In addition to helping constrain possible evolutionary scenarios, studies focussing on stellar pulsations have also been used to infer planets and characterize the rotation of the host star.

Disciplines :

Space science, astronomy & astrophysics

Author, co-author :

Randall, Suzanna K

Fontaine, Gilles

Charpinet, Stéphane

Van Grootel, Valérie ; Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Astrophysique stellaire théorique et astérosismologie

Brassard, Pierre

Language :

English

Title :

Origin and Pulsation of Hot Subdwarfs

Publication date :

February 2014

Event name :

IAU Symposium 301: Precision Asteroseismology

Event organizer :

J. Daszynska-Daszkiewicz

Event place :

Wroclaw, Poland

Event date :

19-23 août 2013

By request :

Yes

Audience :

International

Journal title :

Proceedings of the International Astronomical Union

ISSN :

1743-9213

eISSN :

1743-9221

Publisher :

International Astronomical Union (IAU)

Volume :

301

Pages :

289

Peer reviewed :

Peer Reviewed verified by ORBi

Available on ORBi :

since 13 January 2014

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