Abstract
We present results on the second faintest pulsating subdwarf B (sdB) star, RATJ0455+1305, derived from photometric data obtained in 2009. It shows both short- and long-period oscillations, theoretically assigned as pressure and gravity modes. We identify six short-period frequencies (with one being a combination) and six long-period frequencies. This star is the fourth hybrid sdB star discovered so far which makes it of special interest as each type of mode probes a different part of the star. This star is similar to the sdB hybrid pulsator Balloon090100001 in that it exhibits short-period mode groupings, which can be used to identify pulsation parameters and constrain theoretical models.
Department(s)
Physics, Astronomy, and Materials Science
Document Type
Article
DOI
https://doi.org/10.1111/j.1365-2966.2010.17718.x
Rights Information
This article has been accepted for publication in Monthly Notices of the Royal Astronomical Society ©2011 the authors. Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved.
Keywords
Astroseismology, Subdwarfs
Publication Date
2-1-2011
Recommended Citation
Baran, A. S., J. T. Gilker, L. Fox-Machado, M. D. Reed, and S. D. Kawaler. "RAT J0455+ 1305: a rare hybrid pulsating subdwarf B star." Monthly Notices of the Royal Astronomical Society 411, no. 2 (2011): 776-780.
Journal Title
Monthly Notices of the Royal Astronomical Society
