Reference : Influence of non-adiabatic temperature variations on line profile variations of slowl...
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Space science, astronomy & astrophysics
http://hdl.handle.net/2268/75428
Influence of non-adiabatic temperature variations on line profile variations of slowly rotating beta Cephei stars and SPBs. II. Simulations of line profile time series
English
De Ridder, J. [Instituut voor Sterrenkunde, Katholieke Universiteit Leuven, Celestijnenlaan 200 B, 3001 Heverlee, Belgium]
Dupret, Marc-Antoine [Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Astrophysique stellaire théorique >]
Neuforge, C. [ > > ]
Aerts, C. [Instituut voor Sterrenkunde, Katholieke Universiteit Leuven, Celestijnenlaan 200 B, 3001 Heverlee, Belgium]
1-Apr-2002
Astronomy and Astrophysics
EDP Sciences
385
572-584
Yes (verified by ORBi)
International
0004-6361
1432-0746
Les Ulis
France
[en] STARS: EARLY-TYPE ; STARS: VARIABLES: BETA CEP ; STARS: VARIABLES: SLOWLY PULSATING B STARS ; LINE: PROFILES
[en] We investigate to what extent non-adiabatic temperature variations at the surface of slowly rotating non-radially pulsating beta Cephei stars and slowly pulsating B stars affect silicon line profile variations. We use the non-adiabatic amplitudes of the effective temperature and gravity variation presented in Dupret et al. (\cite{Dupret02}), together with a Kurucz intensity grid, to compute time series of line profile variations. Our simulations point out that the line shapes do not change significantly due to temperature variations. We find equivalent width variations of at most two percent of the mean equivalent width. We confront our results with observational equivalent width variations and with photometrically obtained effective temperature variations. Based on observations obtained with the Swiss photometric telescope and with the ESO/CAT telescope, at La Silla in Chile.
http://hdl.handle.net/2268/75428
10.1051/0004-6361:20020137
http://adsabs.harvard.edu/abs/2002A%26A...385..572D

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