Talk:Kepler-70c

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More recent published research (2015 and 2019) casts doubt on this planet's existence

The 2015 paper "Planetary candidates around the pulsating sdB star KIC 5807616 considered doubtful" and the 2019 paper "Analysis of putative exoplanetary signatures found in light curves of two sdBV stars observed by Kepler" (published in Astronomy and Astrophysics) cast doubt on the existence of the Kepler-70 exoplanets. The authors of the latter paper state (among other things):

"we performed this test on the F 1 and F 2 sig- nals that were observed in KIC 5807616 sdBV. Both signals have larger frequency variations than expected from the exoplanetary origin. After a careful study, we classified the F 1 and F 2 fre- quencies as resulting from a beating of intermediate-amplitude pulsating g modes."

I would like to edit this page (and the Kepler-70/70b/Subdwarf-B pages) to cite these papers and to add a note saying something like "Recent research has suggested that the Kepler-70 exoplanets may not exist, and that the apparent variations in brightness can be explained through other means".

I'm not a professional astronomer and don't know if counter-arguments to those in the papers exist, so I thought I'd post on the talk pages first and see what other editors thought. However, after looking things up further, authors including Ulrich Heber have cited the 2015 paper in their work and appear to find its arguments convincing, so I'm planning on making the edit anyway. I'm still posting on the talk page, though, as "By the way, this planet may not exist" is a very major claim to add to an article about it!

(I'm posting near-identical messages to this one on the other three relevant talk pages. I hope it doesn't trigger any sort of automated spam-detection.)

Someone else pointed me to the 2019 paper during a Stack Exchange discussion; I don't normally keep up with this research, and hadn't known about the 2015 paper until today either.

AstridRedfern (talk) 12:18, 26 January 2020 (UTC)