Reference : Asteroseismology and mode driving of the Herbig Ae star HD 104237
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Space science, astronomy & astrophysics
Asteroseismology and mode driving of the Herbig Ae star HD 104237
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. [> > > >]
Communications in Asteroseismology
[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.

File(s) associated to this reference

Fulltext file(s):

Open access
2007CoAst.150...59D.pdfNo commentaryPublisher postprint116.85 kBView/Open

Bookmark and Share SFX Query

All documents in ORBi are protected by a user license.