Short-period super-Earth at GJ 3634

From the A&A Forthcoming list:

X. Bonfils, M. Gillon, T. Forveille, X. Delfosse, D. Deming, B.-O. Demory, C. Lovis, M. Mayor, V. Neves, C. Perrier, N. C. Santos, S. Seager, S. Udry, I. Boisse, M. Bonnefoy, "A short-period super-Earth orbiting the M2.5 dwarf GJ 3634. Detection with Harps velocimetry and transit search with Spitzer photometry"

Do you have any details?? transit??where can I find more info

I get the idea that if it transited, it would say so in the title instead of just "transit search."

It doesn't transit (PowerPoint presentation)

Minimum mass 6.6 Earth masses at 0.0278 AU.

http://exoplanet.eu/star.php?st=GJ+3634

But no preprint for the moment.

Updated page with preprint. Still no transit, but true mass and orbital inclination determined and hints of a second planetary companion, perhasp within the star's habitable zone

http://exoplanet.eu/star.php?st=GJ+3634

Determination of the inclination from the light curve despite the lack of transits? Pretty neat!

Unless I'm not getting something, you could only get a lower limit to the inclination since you don't know the infrared brightness of the night side. Using the infrared phase curve to get an inclination would depend on the amplitude of course, but there are effects other than inclination that can dilute the amplitude.

Edit: Why hasn't this been done for υ And b? There's a lot of phase curve data for that non-transiting planet.

It is a mystery. At least we won't complain about GJ 3634 b revised as a ...SuperJovian planet from astrometry

Super jovian this is good and seriously any chance for transit??Planet is so close to the star it should transit

tommi59 wrote:

Super jovian this is good and seriously any chance for transit??Planet is so close to the star it should transit

Not seriously. Hoperfully true mass seems ascertained to be 8.4 Earth masses and since no transit has been so far observed, the planet's radius has a lower limit of 1.2 Earth radii. More likely 1.5 Earth radii for a iron-rich to pure iron composition, perhaps dealing with a Kepler-10 b's more nearby analogue.

Considering what Gliese 1214 b and the Kepler-11 planets have shown us, it would not be unreasonable to expect a thick H/He envelope to drive the radius up beyond that.