Hostname: page-component-78c5997874-t5tsf Total loading time: 0 Render date: 2024-11-17T16:12:57.550Z Has data issue: false hasContentIssue false
  • English
  • Français

Do Temperature Variations at the Surface of a Hot Non-Radial Pulsator Change Significantly the Line-Profile Variations?

Published online by Cambridge University Press:  12 April 2016

J. De Ridder ,
C. Aerts ,
M.-A. Dupret  and
C. Neuforge
J. De Ridder
Affiliation:
Instituut voor Sterrenkunde, Katholieke Universiteit Leuven, Belgium
C. Aerts
Affiliation:
Instituut voor Sterrenkunde, Katholieke Universiteit Leuven, Belgium
M.-A. Dupret
Affiliation:
Institut d’Astrophysique et de Géophysique, Université de Liège, Belgium
C. Neuforge
Affiliation:
Institut d’Astrophysique et de Géophysique, Université de Liège, Belgium

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

We present simulations of line-profile variations of Silicon lines in slowly-rotating non-radially pulsating β Cephei stars and SPB stars. Our goal is to examine how sensitive Si lines are to the non-adiabatic temperature variations at the surface of the star. We find that for realistic amplitudes of the velocity field, and for realistic amplitudes and phase differences for the non-adiabatic temperature and gravity variations, the Silicon lines variations are very little affected.

Type
Part 2.2. B-Type Stars
Information
International Astronomical Union Colloquium , Volume 185: Radial and Nonradial Pulsations as Probes of Stellar Physics , 2002 , pp. 218 - 220
Copyright
Copyright © Astronomical Society of the Pacific 2002

References

Albrow, M.D. & Cottrell, P.L. 1996, MNRAS, 278, 337 Google Scholar
Balona, L.A. 1987, MNRAS, 224, 41 Google Scholar
De Cat, P., Aerts, C., De Ridder, J., Kolenberg, K., Meeus, G., & Decin, L. 2000, A&A, 355, 1015 Google Scholar
De Ridder, J., Dupret, M.-A., Neuforge, C., & Aerts, C. 2002, A&A, in pressGoogle Scholar
Dupret, M.-A., De Ridder, J., Neuforge, C., Aerts, C., & Scuflaire, R. 2002, A&A, in pressGoogle Scholar
Osaki, Y. 1971, PASJ, 23 485 Google Scholar
Uytterhoeven, K., Aerts, C., De Cat, P., De Mey, K., Telting, J.H., Schrijvers, C., De Ridder, J., Daems, K., Meeus, G., & Waelkens, C. 2001, A&A, 371, 1035 Google Scholar