Hostname: page-component-745bb68f8f-f46jp Total loading time: 0 Render date: 2025-02-03T12:01:25.357Z Has data issue: false hasContentIssue false
  • English
  • Français

Photometric Modeling of Slowly Pulsating B Stars

Published online by Cambridge University Press:  12 April 2016

R.H.D. Townsend
R.H.D. Townsend*
Affiliation:
Department of Physics & Astronomy, University College London, Gower Street, London WC1E 6BT, UK

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.

Highlights are presented from a theoretical study of the photometric characteristics of slowly pulsating B stars. One outstanding result is the discovery, for l ≥ 2 modes, of cancellation between the flux variations originating from surface temperature perturbations, and those arising from radius perturbations. In addition to reducing greatly the variability generated by such modes, the cancellation introduces significant phase differences between the flux changes in each passband. On the grounds that similarly-large phase differences are not seen in observational data, it is suggested that the light variations of slowly pulsating B stars might be due primarily to l = 1 modes.

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. 226 - 229
Copyright
Copyright © Astronomical Society of the Pacific 2002

References

De Cat, P., & Aerts, C. 2002, A&A, submittedGoogle Scholar
Kurucz, R. 1993, CD-ROM No. 16: Limb darkening for 2 km s-1 grid, (Smithsonian Astrophysical Observatory, Cambridge)Google Scholar
North, P. & Paltani, S. 1994, A&A, 288, 155 Google Scholar
Pamyatnykh, A.A. 1999, Acta Astron., 49, 119 Google Scholar
Townsend, R.H.D. 2002, MNRAS, submittedGoogle Scholar
Unno, W., Osaki, Y., Ando, H., Saio, H., & Shibahashi, H. 1989, Nonradial oscillations of stars, (University of Tokyo Press, Tokyo)Google Scholar
Waelkens, C., Aerts, C., Kestens, E., Grenon, M., & Eyer, L. 1998, A&A, 330, 215 Google Scholar
Watson, R.D. 1988, Ap&SS, 140, 255 Google Scholar