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Scientific paper
Sep 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008dps....40.3705t&link_type=abstract
American Astronomical Society, DPS meeting #40, #37.05; Bulletin of the American Astronomical Society, Vol. 40, p.463
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1
Scientific paper
In the past decade, more than 300 planets orbiting other stars (extrasolar planets) have been discovered. For a growing sample of giant extrasolar planets orbiting very close to their parent star (hot-Jupiters), we can already probe their atmospheric constituents using transit techniques.
With the primary transit method, we can indirectly observe the thin atmospheric ring surrounding the optically thick disk of the planet -the limb- while the planet is transiting in front of its parent star. With the secondary transit method, we can collect photons emitted or reflected by the planet.
In our talk, we will focus in the most recent detections of water vapour and other carbon/nitrogen-bearing molecules in the atmospheres of the Hot-Jupiters HD 189733b and HD 209458b using photometry and spectroscopy measurements with Hubble, Spitzer and ground based telescopes. These results show us that chemical and thermal gradients could be present in hot-Jupiters's atmospheres, and there is not one prototype of hot-Jupiter, but a variety of cases.
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