The Effects of Starspots on Transit Timings for Kepler-9

Details The Effects of Starspots on Transit Timings for Kepler-9 The Effects of Starspots on Transit Timings for Kepler-9

May 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011aas...21831105w&link_type=abstract

American Astronomical Society, AAS Meeting #218, #311.05; Bulletin of the American Astronomical Society, Vol. 43, 2011

Astronomy and Astrophysics

Astronomy

Scientific paper

The Kepler-9 planetary system contains three transiting planets, two of which have been confirmed via transit timing variations caused by their mutual gravitationally interaction. The host star is active, and the light curve shows starspot modulations that are comparable in size to the depths of the transits. If the planet transits over a starspot it will cause a change in the transit shape, and thus induce a shift in the measured mid-transit time that cannot be removed by simple detrending. We present a study of the effects of the starspots on the transit shapes, and specifically on the measured transit times.

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