ORBi: Aerts C. - Asteroseismology of HD 129929: Core Overshooting and Nonrigid Rotation

Reference : Asteroseismology of HD 129929: Core Overshooting and Nonrigid Rotation


	Document type :	Scientific journals : Article
	Discipline(s) :	Physical, chemical, mathematical & earth Sciences : Space science, astronomy & astrophysics
	To cite this reference:	http://hdl.handle.net/2268/76857

Title :	Asteroseismology of HD 129929: Core Overshooting and Nonrigid Rotation
Language :	English
Author, co-author :	Aerts, C. [Instituut voor Sterrenkunde, Katholieke Universiteit Leuven, Celestijnenlaan 200 B, B-3001 Leuven, Belgium.]
	Thoul, Anne [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Evol. et stabilité des étoiles et des amas d'étoiles (ESEA) >]
	Daszynska, J. [Instituut voor Sterrenkunde, Katholieke Universiteit Leuven, Celestijnenlaan 200 B, B-3001 Leuven, Belgium.; Astronomical Institute of the Wroclaw University, ul. Kopernika 11, 51-622 Wroclaw, Poland.]
	Scuflaire, Richard [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Evol. et stabilité des étoiles et des amas d'étoiles (ESEA) >]
	Waelkens, C. [Instituut voor Sterrenkunde, Katholieke Universiteit Leuven, Celestijnenlaan 200 B, B-3001 Leuven, Belgium.]
	Dupret, Marc-Antoine [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Astrophysique stellaire théorique >]
	Niemczura, E. [Astronomical Institute of the Wroclaw University, ul. Kopernika 11, 51-622 Wroclaw, Poland.]
	Noels-Grötsch, Arlette [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Département d'astrophys., géophysique et océanographie (AGO) >]
Publication date :	1-Jun-2003
Journal title :	Science
Volume :	300
Pages :	1926-1928
Peer reviewed :	Yes (verified by ORBi)
Audience :	International
ISSN :	0036-8075
Abstract :	[en] We have gathered and analyzed 1493 high-quality multicolor Geneva photometric data taken over 21 years of the B3V star HD 129929. We detect six frequencies, among which appear the effects of rotational splitting with a spacing of ~0.0121 cycles per day, which implies that the star rotates very slowly. A nonadiabatic analysis of the oscillations allows us to constrain the metallicity of the star to Z â [0.017,0.022], which agrees with a similar range derived from spectroscopic data. We provide evidence for the occurrence of core convective overshooting in the star, with alpha[SUB]ov[/SUB] = 0.10 +/- 0.05, and we rule out rigid rotation.
Permalink :	http://hdl.handle.net/2268/76857
DOI :	10.1126/science.1084993
Other URL :	http://adsabs.harvard.edu/abs/2003Sci...300.1926A

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