TY - JOUR
T1 - The transit light curve project. VIII. Six occultations of the exoplanet tres-3
AU - Winn, Joshua N.
AU - Holman, Matthew J.
AU - Shporer, Avi
AU - Fernndez, José
AU - Mazeh, Tsevi
AU - Latham, David W.
AU - Charbonneau, David
AU - Everett, Mark E.
PY - 2008/7/1
Y1 - 2008/7/1
N2 - 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.
AB - 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.
KW - Planetary systems
KW - Stars: individual (TrES-3, GSC 0308900929)
KW - Techniques: photometric
UR - http://www.scopus.com/inward/record.url?scp=56449112971&partnerID=8YFLogxK
U2 - 10.1088/0004-6256/136/1/267
DO - 10.1088/0004-6256/136/1/267
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AN - SCOPUS:56449112971
SN - 0004-6256
VL - 136
SP - 267
EP - 271
JO - Astronomical Journal
JF - Astronomical Journal
IS - 1
ER -