Abstract
During the Kepler spacecraft’s first year of operation, its short cadence observations were obtained in a survey mode where targets received one month of nearly continuous observations. Forty eight subdwarf B stars were observed of which 14 were found to be pulsators, 13 having predominantly long (g mode) periods. We applied asymptotic relations to the g-mode pulsations and discovered evenly spaced in period sequences for ℓ = 1 and 2 modes in all of the stars. We were able to associate 222 of 317 measured periods with ℓ = 1 and 2 modes which should provide tight constraints on pulsation models. We use the period spacings to compare with theoretical masses of these stars.
Keywords
- Mode Identification
- Asymptotic Relation
- Horizontal Branch
- Pulsation Model
- Period Spacing
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.
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Reed, M.D. (2013). Mode Identification for Subdwarf B Stars Using Period Spacings in Kepler Data. In: Suárez, J., Garrido, R., Balona, L., Christensen-Dalsgaard, J. (eds) Stellar Pulsations. Astrophysics and Space Science Proceedings, vol 31. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-29630-7_48
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DOI: https://doi.org/10.1007/978-3-642-29630-7_48
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