THE TRANSIT LIGHT CURVE PROJECT. VIII. SIX OCCULTATIONS OF THE EXOPLANET TrES-3
- 10 June 2008
- journal article
- Published by American Astronomical Society in The Astronomical Journal
- Vol. 136 (1) , 267-271
- https://doi.org/10.1088/0004-6256/136/1/267
Abstract
We present photometry of the exoplanet host star TrES-3 spanning six occultations (secondary eclipses) of its giant planet. No flux decrements were detected, leading to 99%-confidence upper limits on the planet-to-star flux ratio of 2.4 × 10–4, 5.0 × 10–4, and 8.6 × 10–4 in the i-, z-, and R-bands respectively. The corresponding upper limits on the planet's geometric albedo are 0.30, 0.62, and 1.07. The upper limit in the i-band rules out the presence of highly reflective clouds, and is only a factor of 2-3 above the predicted level of thermal radiation from the planet.Keywords
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