KIC 5095269 - Circumbinary planet?

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KIC 5095269 - Circumbinary planet?

Post by Sirius_Alpha on 12th March 2017, 8:26 pm

Evidence for a planetary mass third body orbiting the binary star KIC 5095269
https://arxiv.org/abs/1703.03518

In this paper, we report the evidence for a planetary mass body orbiting the close binary star KIC 5095269. This detection arose from a search for eclipse timing variations among the more than 2,000 eclipsing binaries observed by Kepler. Light curve and periodic eclipse time variations have been analysed using Systemic and a custom Binary Eclipse Timings code based on the Transit Analysis Package which indicates a 7.700.08MJup object orbiting every 237.70.1d around a 1.2M⊙ primary and 0.51M⊙ secondary in an 18.6d orbit. A dynamical integration over 107 years suggests a stable orbital configuration. Radial velocity observations are recommended to confirm the properties of the binary star components and the planetary mass of the companion.

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Re: KIC 5095269 - Circumbinary planet?

Post by Lazarus on 13th March 2017, 2:31 pm

Figure 5 is... interesting.

Systemic does seem to have a tendency to produce wildly misaligned systems when the data don't do much to constrain the inclinations. Not sure the full 3D fit is justified here.
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