K2 News and Results

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Re: K2 News and Results

Post by Sirius_Alpha on 19th November 2017, 9:54 pm

Planet Candidates from K2 Campaigns 5-8 and Follow-Up Optical Spectroscopy
https://arxiv.org/abs/1711.06377

We present 151 planet candidates orbiting 141 stars from K2 campaigns 5-8 (C5-C8), identified through a systematic search of K2 photometry. In addition, we identify 16 targets as likely eclipsing binaries, based on their light curve morphology. We obtained follow-up optical spectra of 105/141 candidate host stars and 8/16 eclipsing binaries to improve stellar properties and to identify spectroscopic binaries. Importantly, spectroscopy enables measurements of host star radii with ≈10% precision, compared to ≈40% precision when only broadband photometry is available. The improved stellar radii enable improved planet radii. Our curated catalog of planet candidates provides a starting point for future efforts to confirm and characterize K2 discoveries.

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Re: K2 News and Results

Post by Led_Zep on 27th November 2017, 1:55 pm

http://www.ifa.hawaii.edu/info/press-releases/PuffyPlanets/

Newly Discovered Twin Planets Could Solve Puffy Planet Mystery

"Seeing double with K2: Testing re-inflation with two remarkably similar planets orbiting red giant stars" has been published in November 27th edition of The Astronomical Journal as and is available online at https://arxiv.org/abs/1706.05865
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Re: K2 News and Results

Post by Lazarus on 28th November 2017, 2:48 pm

K2 limits on planet occurrence around white dwarf stars.

van Sluijs & Van Eylen "The occurrence of planets and other substellar bodies around white dwarfs using K2"
https://arxiv.org/abs/1711.09691
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Re: K2 News and Results

Post by Led_Zep on 6th December 2017, 12:21 am

Sirius_Alpha wrote:Characterization of the K2-18 multi-planetary system with HARPS: A habitable zone super-Earth and discovery of a second, warm super-Earth on a non-coplanar orbit
https://arxiv.org/abs/1707.04292


http://nouvelles.umontreal.ca/en/article/2017/12/05/two-super-earths-around-star-k2-18/

Two Super-Earths around star K2-18
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Re: K2 News and Results

Post by Led_Zep on 9th December 2017, 12:08 am

K1 or K2 ?

https://www.nasa.gov/press-release/nasa-hosts-media-teleconference-to-announce-latest-kepler-discovery

NASA will host a media teleconference at 1 p.m. EST Thursday, Dec. 14, to announce the latest discovery made by its planet-hunting Kepler space telescope. The discovery was made by researchers using machine learning from Google. Machine learning is an approach to artificial intelligence, and demonstrates new ways of analyzing Kepler data
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Re: K2 News and Results

Post by Lazarus on 9th December 2017, 7:33 pm

Machine learning? So, a huge batch of candidates or something?
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Re: K2 News and Results

Post by Sirius_Alpha on 9th December 2017, 9:00 pm

Judging by the caption to the picture, it's from Kepler's primary mission.

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Re: K2 News and Results

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