A Search for Exotrojans in Transiting Exoplanetary systems

Details A Search for Exotrojans in Transiting Exoplanetary systems A Search for Exotrojans in Transiting Exoplanetary systems

2008-07-29

arxiv.org/abs/0807.4570v1

Astronomy and Astrophysics

Astrophysics

To appear in Proceedings of the IAU Symposium No. 253, "Transiting Planets", May 19 - May 23, 2008, Cambridge, MA

Scientific paper

10.1017/S1743921308027038

We present a search for Trojan companions to 25 transiting exoplanets. We use the technique of Ford & Gaudi 2006, in which a difference is sought between the observed transit time and the transit time that is calculated by fitting a two-body Keplerian orbit to the radial-velocity data. This technique is sensitive to the imbalance of mass at the L4/L5 points of the planet-star orbit. No companions were detected. The median 2$\sigma$ upper limit is 60 Earth masses, and the most constraining limit is 2.5 Earth masses for the case of GJ 436.

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