Discovery of a Long-Period Photometric Variation in the V361 Hya Star HS 0702+6043

Details Discovery of a Long-Period Photometric Variation in the V361 Hya Star HS 0702+6043 Discovery of a Long-Period Photometric Variation in the V361 Hya Star HS 0702+6043

2004-11-23

arxiv.org/abs/astro-ph/0411640v1

Astronomy and Astrophysics

Astrophysics

6 pages, 4 figures, 2 tables, to appear in the proceedings of the 14th European Workshop on White Dwarfs, eds. D. Koester and

Scientific paper

We report the discovery of a long-period g-mode oscillation in the previously known short-period p-mode sdB pulsator HS 0702+6043. This makes this star an extraordinary object, unique as a member of the family of sdB pulsators, and one of the very few known pulsating stars overall exhibiting excited modes along both the acoustic and gravity branches of the nonradial pulsation spectrum. Because p-modes and g-modes probe different regions of a pulsating star, HS 0702+6043 holds a tremendous potential for future detailed asteroseismological investigations.

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