Observations of tides and circularization in red-giant binaries from Kepler photometry
Autor: | Paul G. Beck, Thomas Kallinger, S. Mathis, M. Benbakoura, Rafael A. García |
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Rok vydání: | 2019 |
Předmět: |
Earth and Planetary Astrophysics (astro-ph.EP)
Physics 010308 nuclear & particles physics Red giant General Engineering FOS: Physical sciences Binary number Astronomy Astronomy and Astrophysics Astrophysics::Cosmology and Extragalactic Astrophysics 01 natural sciences Kepler Stars Photometry (astronomy) Astrophysics - Solar and Stellar Astrophysics Space and Planetary Science 0103 physical sciences Binary star Astrophysics::Solar and Stellar Astrophysics Astrophysics::Earth and Planetary Astrophysics 010303 astronomy & astrophysics Solar and Stellar Astrophysics (astro-ph.SR) Astrophysics::Galaxy Astrophysics Astrophysics - Earth and Planetary Astrophysics |
Zdroj: | EAS Publications Series |
ISSN: | 1633-4760 |
DOI: | 10.1051/eas/1982012 |
Popis: | Binary stars are places of complex stellar interactions. While all binaries are in principle converging towards a state of circularization, many eccentric systems are found even in advanced stellar phases. In this work we discuss the sample of binaries with a red-giant component, discovered from observations of the NASA Kepler space mission. We first discuss which effects and features of tidal interactions are detectable in photometry, spectroscopy and the seismic analysis. In a second step, the sample of binary systems observed with Kepler, is compared to the well studied sample of Verbunt & Phinney (1995, hereafter VP95). We find that this study of circularization of systems hosting evolving red-giant stars with deep convective envelopes is also well applicable to the red-giant binaries in the sample of Kepler stars. Proceedings paper for the J-P Zahn Symposion, Paris, 6 Pages, 2 Figures |
Databáze: | OpenAIRE |
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