Transit Timing Variations: Hints of a Second Planet in the HD 17156 System

Details Transit Timing Variations: Hints of a Second Planet in the HD 17156 System Transit Timing Variations: Hints of a Second Planet in the HD 17156 System

Jan 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aas...21331901w&link_type=abstract

American Astronomical Society, AAS Meeting #213, #319.01; Bulletin of the American Astronomical Society, Vol. 41, p.373

Astronomy and Astrophysics

Astronomy

Scientific paper

With the longest orbital period (21.2 d) and the largest eccentricity (e=0.67) of currently known transiting extrasolar planets, HD 17156b is a fascinating planet. We present observations of recent transits, and using previously published photometry and radial velocities we derive improved system parameters. The transit timings show a non-linear O-C, suggesting the presence of a third body in the system.

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