Detection of period variations in extrasolar transiting planet OGLE-TR-111b

Details Detection of period variations in extrasolar transiting planet OGLE-TR-111b Detection of period variations in extrasolar transiting planet OGLE-TR-111b

2008-06-06

arxiv.org/abs/0806.1229v3

ApJ 682 (2008) L49-L52

Astronomy and Astrophysics

Astrophysics

Corrected central times, minor changes in the analysis of the data, and text. Accepted for publication in ApJ Letters

Scientific paper

10.1086/590907

Two consecutive transits of planetary companion OGLE-TR-111b were observed in the I band. Combining these observations with data from the literature, we find that the timing of the transits cannot be explained by a constant period, and that the observed variations cannot be originated by the presence of a satellite. However, a perturbing planet with the mass of the Earth in an exterior orbit could explain the observations if the orbit of OGLE-TR-111b is eccentric. We also show that the eccentricity needed to explain the observations is not ruled out by the radial velocity data found in the literature.

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