Analysis of the exoplanet containing system Kepler-91
Abstract
We have applied the graphical user interfaced close binary system analysis program WinFitter to an intensive study of Kepler-91 using all the available photometry from the NASA Exoplanet Archive (NEA) at the Caltech website: http://exoplanetarchive.ipac.caltech.edu. Our fitting function for the tidal distortion derives from the relevant Radau equation and includes terms up to the fifth power of the fractional radius. This results in a systematic improvement in the mass ratio estimation over that of Lillo-Box et al. (Astron. Astrophys. 562:A109, 2014a) and our derived value for the mass ratio is in close agreement with that inferred from recent high-resolution spectroscopic data.
- Publication:
-
Astrophysics and Space Science
- Pub Date:
- January 2016
- DOI:
- 10.1007/s10509-015-2564-4
- arXiv:
- arXiv:1507.02060
- Bibcode:
- 2016Ap&SS.361...17B
- Keywords:
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- Stars: close binary;
- Stellar dynamics;
- Exoplanets;
- Light curve analysis;
- Astrophysics - Earth and Planetary Astrophysics;
- Astrophysics - Solar and Stellar Astrophysics
- E-Print:
- 12 pages, 5 figures