Reference : Asteroseismology and mode driving of the Herbig Ae star HD 104237
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Space science, astronomy & astrophysics
http://hdl.handle.net/2268/75460
Asteroseismology and mode driving of the Herbig Ae star HD 104237
English
Dupret, Marc-Antoine [Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Astrophysique stellaire théorique >]
Théado, S. [> > > >]
Böhm, T. [> > > >]
Goupil, Marie-José [> > > >]
Catala, C. [> > > >]
Grigahcène, A. [> > > >]
1-Jun-2007
Communications in Asteroseismology
150
59
Yes
International
[en] Eight pulsation frequencies were detected in the Herbig Ae star HD 104237 during two observational campaigns in 1999 -- 2000 (Böhm et al. 2004). Moreover, Böhm et al. (in preparation) detected recently in their data two independent signatures of a signal at 95 hr that corresponds probably to rotational modulation. We present here a seismic study of this Pre-Main Sequence star based on these observations. Different possible interpretations of the pulsation spectrum are considered. The driving of the pulsation modes is not explained by standard models, the observed frequencies being too high for delta Scuti-type pulsations. We consider the effect of He accumulation in its partial ionization zones as a possible explanation for this driving.
http://hdl.handle.net/2268/75460
10.1553/cia150s59
http://adsabs.harvard.edu/abs/2007CoAst.150...59D

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