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Identifying Modes in a Pulsating sdB (EC 14026) Star

Published online by Cambridge University Press:  12 April 2016

M.D. Reed  and
the Whole Earth Telescope Xcov 17 and 21 teams
M.D. Reed
Affiliation:
Southwest Missouri State University, Department of Physics, Astronomy, and Material Science, Sprintfield, MO, 65804, e-mail:[email protected]

Abstract

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We present a preliminary analysis of time series photometry on the pulsating subdwarf B star PG 1336-018 acquired as part of two Whole Earth Telescope runs. PG 1336-018 is a multi-mode pulsator with at least 15 periods centered around 175 seconds. It is also an HW Vir-type eclipsing binary with a period of 2.4 hours. Although over 20 pulsating subdwarf B stars have been discovered, only a few have resolved temporal spectra and still fewer have identified pulsation modes. We analyze features unique to the eclipsing binary system of PG 1336-018 as a means of identifying pulsation modes.

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. 368 - 371
Copyright
Copyright © Astronomical Society of the Pacific 2002

References

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