Is this useful for exoplanet vetting?

one-datum / pipeline

What can we infer about an orbit from just the RV jitter?

MIT License

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Is this useful for exoplanet vetting? #6

Open dfm opened 3 years ago

dfm commented 3 years ago

I'd be interested in looking at some false positives exoplanet candidates that were ruled out with radial velocities. Would we have been able to do that with the Gaia archive? @trevordavid @quadrychance

quadrychance commented 3 years ago

I think so. There is a specific paper I'm thinking of (that I can't find right now) that resulted in a substantial fraction of the giant planet candidate KOIs ending up as EBs because of too-large RV amplitudes. Some subset of those won't be detectable from Gaia because they're background EBs, but I don't know what fraction that would be.

dfm commented 3 years ago

Great! Let me know if you think of it and I can do some digging too.

quadrychance commented 3 years ago

Found it: https://ui.adsabs.harvard.edu/abs/2016A%26A...587A..64S/abstract

dfm commented 3 years ago

Awesome - thanks! Here's my current best estimate of the per-transit radial velocity uncertainty from Gaia which is ~our semi-amplitude measurement limit:

This means that our detection limit is pretty high, but could still help in some cases?

(The shaded region is an extrapolation so pretty much ignore that and just look at the central area.)