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Radial Velocities for the Pulsating Subdwarf B Star PG 1605+072

Published online by Cambridge University Press:  12 April 2016

V.M. Woolf ,
C.S. Jeffery  and
D.L. Pollacco
V.M. Woolf
Affiliation:
Armagh Observatory, College Hill, Armagh, BT61 9DG, Northern Ireland
C.S. Jeffery
Affiliation:
Armagh Observatory, College Hill, Armagh, BT61 9DG, Northern Ireland
D.L. Pollacco
Affiliation:
Queens University Belfast, Belfast BT7 1NN, Northern Ireland

Abstract

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We have performed high-speed spectroscopy of the pulsating subdwarf B star PG 1605+072. Its radial velocity variations have frequencies similar to those reported from photometric observations. Peak amplitude ratios are different, probably as a result of power shifting between modes over time. Line-shape variations have also been detected.

Type
Part 2.5. Pulsations in Compact Objects
Information
International Astronomical Union Colloquium , Volume 185: Radial and Nonradial Pulsations as Probes of Stellar Physics , 2002 , pp. 376 - 377
Copyright
Copyright © Astronomical Society of the Pacific 2002

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