A stellar flare during the transit of the extrasolar planet OGLE-TR-10b *
Astrophysics Group, Keele University, Staffordshire, ST5 5BG, UK e-mail: firstname.lastname@example.org
2 Department of Physics and Astronomy, University of Sheffield, S3 7RH, UK
3 Department of Physics, University of Warwick, Coventry, CV4 7AL, UK
Accepted: 9 August 2009
We report a stellar flare occurring during a transit of the exoplanet OGLE-TR-10b, an event not previously reported in the literature. This reduces the observed transit depth, particularly in the u'-band, but flaring could also be significant in other bands and could lead to incorrect planetary parameters. We suggest that OGLE-TR-10a is an active planet-hosting star and has an unusually high X-ray luminosity.
Key words: stars: individual: OGLE-TR-10 / stars: planetary systems / stars: flare / stars: activity
© ESO, 2009