ORBi: Bouabid M-P - Hybrid γ Doradus/δ Scuti Stars: Comparison Between Observations and Theory

Reference : Hybrid γ Doradus/δ Scuti Stars: Comparison Between Observations and Theory


	Document type :	Scientific journals : Article
	Discipline(s) :	Physical, chemical, mathematical & earth Sciences : Space science, astronomy & astrophysics
	To cite this reference:	http://hdl.handle.net/2268/135099

Title :	Hybrid γ Doradus/δ Scuti Stars: Comparison Between Observations and Theory
Language :	English
Author, co-author :	Bouabid, M-P [UMR 6525 H. Fizeau, UNS, CNRS, OCA, Campus Valrose, 06108 Nice Cedex 2, France; Institut d'Astrophysique et de Géophysique de l'Université de Liège, Allée du 6 Août, 17 4000 Liège, Belgium]
	Montalban Iglesias, Josefa [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Astrophysique stellaire théorique et astérosismologie]
	Miglio, Andrea [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Astrophysique stellaire théorique et astérosismologie]
	Dupret, Marc-Antoine [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Astrophysique stellaire théorique et astérosismologie]
	Grigahcène, A. [Centro de Astrofisica da Universidade do Porto, Rua das Estrelas, 4150-762 Porto, Portugal]
	Noels-Grötsch, Arlette [Institut d'Astrophysique et de Géophysique de l'Université de Liège, Allée du 6 Août, 17 4000 Liège, Belgium]
	Bradley, Paul A [> > > >]
Publication date :	1-Sep-2009
Journal title :	AIP Conference Proceedings
Publisher :	American Institute of Physics
Volume :	1170
Pages :	477-479
Audience :	International
ISSN :	0094-243X
e-ISSN :	1551-7616
City :	New York
Country :	NY
Keywords :	[en] Pulsations ; oscillations ; and stellar seismology ; Low-amplitude blue variables ; Main-sequence: early-type stars
Abstract :	[en] γ Doradus (γ Dor) are F-type stars pulsating with high order g-modes. Their instability strip (IS) overlaps the red edge of the δ Scuti δ Sct) one. This observation has led to search for objects in this region of the HR diagram showing p and g-modes simultaneously. The existence of such hybrid pulsators has recently been confirmed [10] and the number of candidates is increasing (e.g. [17]). From a theoretical point of view, non-adiabatic computations including a time-dependent treatment of convection (TDC) predict the existence of γ Dor/δ Sct hybrid pulsators ([5], [8]). Our aim is to confront the properties of the observed hybrid candidates with the theoretical predictions from non-adiabatic computations of non-radial pulsations including the convection-pulsation interaction.
Permalink :	http://hdl.handle.net/2268/135099
DOI :	10.1063/1.3246547
Other URL :	http://adsabs.harvard.edu/abs/2009AIPC.1170..477B
Commentary :	http://de.arxiv.org/abs/0911.0775

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