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Astero-Oscillometry: Gauging Stars with Oscillations1

Published online by Cambridge University Press:  12 April 2016

M. Maintz ,
Th. Rivinius ,
D. Baade  and
S. Štefl
M. Maintz
Affiliation:
Landessternwarte Königstuhl, Heidelberg, Germany
Th. Rivinius
Affiliation:
European Southern Observatory, Garching, Germany
D. Baade
Affiliation:
European Southern Observatory, Garching, Germany
S. Štefl
Affiliation:
Astronomical Institute, Academy of Sciences, Ondrejov, Czech Republic

Abstract

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Astero-oscillometry is presented as a new method for deriving stellar parameters on the basis of a physical modeling of line profile variability (lpv) caused by nonradial pulsation (nrp). First applications to rapidly rotating B-type stars show that the method is able to yield reasonable stellar parameters. The radii are systematically smaller compared to those derived by conventional methods. This could be attributed to possible effects of rapid rotation on stellar evolution. Since the method requires only one or a few pulsation modes to be excited, it is ideally suited to investigating early-type stars.

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. 222 - 225
Copyright
Copyright © Astronomical Society of the Pacific 2002

Footnotes

1

Based on observations obtained at the European Southern Observatory, La Silla, Chile, prop. Nos. 62.H-0319 and 64.H-05481

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