Other
Scientific paper
Sep 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011ess.....2.1202s&link_type=abstract
American Astronomical Society, ESS meeting #2, #12.02
Other
Scientific paper
I will present results on an ongoing large ESO program on the 10.4 meter Gran Telescopio Canarias (GTC) telescope performing an optical survey of transiting exoplanet atmospheres, including 10 hot-Jupiters and a super-Earth. Our observations use a unique tunable filter, capable of photon-limited sub-mmag narrowband transit spectrophotometry, capable of detecting Na, K, TiO and other important atmospheric species. With a large aperture coupled with fast photometry, our observations can perform transmission spectrophotometry for a wide range of hot-Jupiter atmospheres, including fainter targets, allowing for comparative exoplanetary atmospheric studies. The first observations from this program detected potassium in XO-2b, the first time this important alkali metal was found on an exoplanet. I will detail the further results of our survey including the hot-Jupiters Hat-P-1b, Tres-2b, Hat-P-6b, and XO-2b, as well as the super-Earth GJ1214b, and compare the different atmospheres we are detecting.
Ballester Gilda
D'esert J.
Ehrenreich David
Fortney Jonathan J.
Lecavelier Des Etangs Alain
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