ORBi: Montalban Iglesias Josefa - Seismic Diagnostics of Red Giants: First Comparison with Stellar Models

Reference : Seismic Diagnostics of Red Giants: First Comparison with Stellar Models


	Document type :	Scientific journals : Article
	Discipline(s) :	Physical, chemical, mathematical & earth Sciences : Space science, astronomy & astrophysics
	To cite this reference:	http://hdl.handle.net/2268/130368

Title :	Seismic Diagnostics of Red Giants: First Comparison with Stellar Models
Language :	English
Author, co-author :	Montalban Iglesias, Josefa [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Astrophysique stellaire théorique et astérosismologie >]
	Miglio, Andrea [Institut d'Astrophysique et Géophysique de l'Université de Liège, Allée du six Août, 17 B-4000 Liège, Belgium; Chargé de Recherches of the Fonds de la Recherche Scientifique, FNRS, rue d'Egmont 5, B-1000 Bruxelles, Belgium.]
	Noels-Grötsch, Arlette [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Evol. et stabilité des étoiles et des amas d'étoiles (ESEA) >]
	Scuflaire, Richard [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Evol. et stabilité des étoiles et des amas d'étoiles (ESEA) >]
	Ventura, P. [Osservatorio Astronomico di Roma-INAF, via Frascati 33, Monteporzio Catone, Rome, Italy)]
Publication date :	1-Oct-2010
Journal title :	Astrophysical Journal Letters
Publisher :	IOP Publishing
Volume :	721
Pages :	L182-L188
Peer reviewed :	Yes (verified by ORBi)
Audience :	International
ISSN :	2041-8205
e-ISSN :	2041-8213
City :	Bristol
Country :	United Kingdom
Keywords :	[en] stars: evolution ; stars: interiors ; stars: late-type ; stars: oscillations
Abstract :	[en] The clear detection with CoRoT and KEPLER of radial and non-radial solar-like oscillations in many red giants paves the way for seismic inferences on the structure of such stars. We present an overview of the properties of the adiabatic frequencies and frequency separations of radial and non-radial oscillation modes for an extended grid of models. We highlight how their detection allows a deeper insight into the internal structure and evolutionary state of red giants. In particular, we find that the properties of dipole modes constitute a promising seismic diagnostic tool of the evolutionary state of red giant stars. We compare our theoretical predictions with the first 34 days of KEPLER data and predict the frequency diagram expected for red giants in the CoRoT exofield in the galactic center direction.
Permalink :	http://hdl.handle.net/2268/130368
	also: http://hdl.handle.net/2268/130369
DOI :	10.1088/2041-8205/721/2/L182
Other URL :	http://adsabs.harvard.edu/abs/2010ApJ...721L.182M
	http://de.arxiv.org/abs/1009.1754

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