Modeling Kepler Eclipsing Binaries: Homogeneous Inference of Orbital & Stellar Properties
| Autor: | Flavien Kiefer, Diana Windemuth, Eric Agol, Aleezah Ali |
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| Rok vydání: | 2019 |
| Předmět: |
Physics
Earth and Planetary Astrophysics (astro-ph.EP) 010308 nuclear & particles physics Apsidal precession FOS: Physical sciences Astronomy and Astrophysics Astrophysics Light curve 01 natural sciences Radial velocity Astrophysics - Solar and Stellar Astrophysics Space and Planetary Science Planet 0103 physical sciences Spectral energy distribution Astrophysics::Solar and Stellar Astrophysics Astrophysics::Earth and Planetary Astrophysics Circumbinary planet 010303 astronomy & astrophysics Stellar evolution Solar and Stellar Astrophysics (astro-ph.SR) Eclipse Astrophysics - Earth and Planetary Astrophysics |
| DOI: | 10.48550/arxiv.1908.00139 |
| Popis: | We report on the properties of eclipsing binaries from the Kepler mission with a newly developed photometric modeling code, which uses the light curve, spectral energy distribution of each binary, and stellar evolution models to infer stellar masses without the need for radial velocity measurements. We present solutions and posteriors to orbital and stellar parameters for 728 systems, forming the largest homogeneous catalogue of full Kepler binary parameter estimates to date. Using comparisons to published radial velocity measurements, we demonstrate that the inferred properties (e.g., masses) are reliable for well-detached main-sequence binaries, which make up the majority of our sample. The fidelity of our inferred parameters degrades for a subset of systems not well described by input isochrones, such as short-period binaries that have undergone interactions, or binaries with post-main sequence components. Additionally, we identify 35 new systems which show evidence of eclipse timing variations, perhaps from apsidal motion due to binary tides or tertiary companions. We plan to subsequently use these models to search for and constrain the presence of circumbinary planets in Kepler eclipsing binary systems. Comment: 36 pages, 16 figures; accepted 2019 July 30 to MNRAS |
| Databáze: | OpenAIRE |
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