Analysis of Kepler Observations of HAT-P-7 b

Details Analysis of Kepler Observations of HAT-P-7 b Analysis of Kepler Observations of HAT-P-7 b

Oct 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011epsc.conf..172j&link_type=abstract

EPSC-DPS Joint Meeting 2011, held 2-7 October 2011 in Nantes, France. http://meetings.copernicus.org/epsc-dps2011, p.172

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HAT-P-7 b is among the hottest hot Jupiters ever discovered. Its orbital distance of about 4 stellar radii from an F star suggests the planet has a dayside temperature in excess of 2700 K. Moreover, HAT-P-7 b exerts tremendous tidal influence on its host star, significantly distorting the star's equilibrium shape. Prompted in part by these expectations, the Kepler mission observed the HAT-P-7 system in its shortcadence mode (i.e. 60 second integration times) from May 2009 till December 2010. Previous analyses of the first 10 days of Kepler observations (quarter 0) by [1] found evidence for atmospheric emission from the planet's dayside. A subsequent analysis [2] of the next 34 days of observations (quarter 1) showed evidence for ellipsoidal variations of the tidally distorted host star. Since then, another 90 days (quarter 2) of Kepler data have been made public, nearly tripling the number of planetary transits observed. This increase in the number of transits allows more complete removal of other systematic variations, facilitating a search for planetary variability. We present preliminary results of our analysis of the publicly available Kepler transit data of HAT-P-7 b. Our analysis provides improved constraints on transit parameters. The next steps in our study will involve analysis of ellipsoidal variations exhibited by the host star and a search for meteorological variability in the planet's phase curve.

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