Reference : Nitrogen excess in slowly-rotating beta Cephei stars: deep mixing or diffusion?

	Document type :	Scientific journals : Article
	Discipline(s) :	Physical, chemical, mathematical & earth Sciences : Space science, astronomy & astrophysics
	To cite this reference:	http://hdl.handle.net/2268/31821

Title :	Nitrogen excess in slowly-rotating beta Cephei stars: deep mixing or diffusion?
Language :	English
Author, co-author :	Morel, Thierry [Katholieke Universiteit Leuven, Departement Natuurkunde en Sterrenkunde, Instituut voor Sterrenkunde, Celestijnenlaan 200D, 3001 Leuven, Belgium > > > >]
	Butler, K. [> > > >]
	Aerts, C. [> > > >]
	Neiner, C. [> > > >]
	Briquet, Maryline [> > > >]
Publication date :	1-Jun-2007
Journal title :	Communications in Asteroseismology
Volume :	150
Pages :	199
Audience :	International
Abstract :	[en] We present the results of an NLTE abundance study of a small sample of β Cephei stars, which point to the existence of a population of slowly-rotating B-type pulsators exhibiting a significant amount of nitrogen-enriched material at their surface. Although the origin of this nitrogen excess remains unclear, an overabundance preferentially occurring in stars with a detected magnetic field seems to emerge at this stage. Full details can be found in Morel et al. (2006).
Permalink :	http://hdl.handle.net/2268/31821
DOI :	10.1553/cia150s199
Other URL :	http://adsabs.harvard.edu/abs/2007CoAst.150..199M

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