Kepler-167 : A transiting Jupiter analogue in a multi-super-Earth system

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Kepler-167 : A transiting Jupiter analogue in a multi-super-Earth system

Post by Sirius_Alpha on 1st March 2016, 9:34 pm

A Transiting Jupiter Analog
http://arxiv.org/abs/1603.00042

Decadal-long radial velocity surveys have recently started to discover analogs to the most influential planet of our solar system, Jupiter. Detecting and characterizing these worlds is expected to shape our understanding of our uniqueness in the cosmos. Despite the great successes of recent transit surveys, Jupiter analogs represent a terra incognita, owing to the strong intrinsic bias of this method against long orbital periods. We here report on the first validated transiting Jupiter analog, Kepler-167e (KOI-490.02), discovered using Kepler archival photometry orbiting the K4-dwarf KIC-3239945. With a radius of (0.91 0.02) RJ, a low orbital eccentricity (0.06+0.10 −0.04) and an equilibrium temperature of (1313) K, Kepler-167e bears many of the basic hallmarks of Jupiter. Kepler-167e is accompanied by three Super-Earths on compact orbits, which we also validate, leaving a large cavity of transiting worlds around the habitable-zone. With two transits and continuous photometric coverage, we are able to uniquely and precisely measure the orbital period of this post snow-line planet (1071.23230.0006 d), paving the way for follow-up of this K = 11.8 mag target.

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Re: Kepler-167 : A transiting Jupiter analogue in a multi-super-Earth system

Post by Edasich on 2nd March 2016, 5:29 am

A transiting Jupiter-like planet!

A Transiting Jupiter Analog

Decadal-long radial velocity surveys have recently started to discover analogs to the most influential planet of our solar system, Jupiter. Detecting and characterizing these worlds is expected to shape our understanding of our uniqueness in the cosmos. Despite the great successes of recent transit surveys, Jupiter analogs represent a terra incognita, owing to the strong intrinsic bias of this method against long orbital periods. We here report on the first validated transiting Jupiter analog, Kepler-167e (KOI-490.02), discovered using Kepler archival photometry orbiting the K4-dwarf KIC-3239945. With a radius of $(0.91\pm0.02)$ $R_{\mathrm{Jup}}$, a low orbital eccentricity ($0.06_{-0.04}^{+0.10}$) and an equilibrium temperature of $(131\pm3)$ K, Kepler-167e bears many of the basic hallmarks of Jupiter. Kepler-167e is accompanied by three Super-Earths on compact orbits, which we also validate, leaving a large cavity of transiting worlds around the habitable-zone. With two transits and continuous photometric coverage, we are able to uniquely and precisely measure the orbital period of this post snow-line planet ($1071.2323\pm0.0006$ d), paving the way for follow-up of this $K=11.8$ mag target.
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Re: Kepler-167 : A transiting Jupiter analogue in a multi-super-Earth system

Post by Sirius_Alpha on 2nd March 2016, 7:41 am

Duplicate merged.

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Re: Kepler-167 : A transiting Jupiter analogue in a multi-super-Earth system

Post by Lazarus on 2nd March 2016, 1:50 pm

Impressive. I recall some theories that Jupiters would tend to drive systems away from coplanarity, so seeing this as a multi-transiting system is interesting.
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Re: Kepler-167 : A transiting Jupiter analogue in a multi-super-Earth system

Post by tommi59 on 2nd March 2016, 2:03 pm

Jupiters tend systems to drive away from coplanarity but we do not know mass of planet e this most likely has saturn mass and it could matter
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Re: Kepler-167 : A transiting Jupiter analogue in a multi-super-Earth system

Post by Lazarus on 11th March 2016, 8:04 pm

A couple of videos about this one on the Cool Worlds channel on YouTube:

https://www.youtube.com/watch?v=FmDp7wedxvQ (Discovery of Kepler-167e: A Jupiter Twin)
https://www.youtube.com/watch?v=ZTKVC2zBElA (Discovery of Kepler-167e: Q&A)
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Re: Kepler-167 : A transiting Jupiter analogue in a multi-super-Earth system

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