Reference : The epsilon-mechanism in PMS and MS delta Scuti stars

	Document type :	Scientific journals : Article
	Discipline(s) :	Physical, chemical, mathematical & earth Sciences : Space science, astronomy & astrophysics
	To cite this reference:	http://hdl.handle.net/2268/75456

Title :	The epsilon-mechanism in PMS and MS delta Scuti stars
Language :	English
Author, co-author :	Lenain, G. [> > > >]
	Scuflaire, Richard [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Evol. et stabilité des étoiles et des amas d'étoiles (ESEA) >]
	Dupret, Marc-Antoine [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Astrophysique stellaire théorique >]
	Noels-Grötsch, Arlette [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Département d'astrophys., géophysique et océanographie (AGO) >]
Publication date :	1-Jan-2006
Journal title :	Communications in Asteroseismology
Volume :	147
Pages :	93-96
Audience :	International
Abstract :	[en] Delta Scuti type stars are known to pulsate in nonradial low-order p and g modes. These oscillation modes are driven by the so-called kappa-mechanism involving the second helium ionization zone. However, since g modes have significant amplitudes near the stellar core, their excitation might be influenced by the epsilon-mechanism which is associated to the nuclear energy production. We investigate the effect of the epsilon-mechanism on the stability of oscillation modes in 1.5 M(solar) pre-main sequence and main sequence stars.
Permalink :	http://hdl.handle.net/2268/75456
DOI :	10.1553/cia147s93
Other URL :	http://adsabs.harvard.edu/abs/2006CoAst.147...93L

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