New Observations and Modeling of Transiting Exoplanets

Details New Observations and Modeling of Transiting Exoplanets New Observations and Modeling of Transiting Exoplanets

Sep 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009dps....41.3102t&link_type=abstract

American Astronomical Society, DPS meeting #41, #31.02

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Scientific paper

In the past decade, more than 350 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.
Here we will present new most recent observations of few hot-Jupiters, including primary and secondary transit photometry and spectroscopy measurements with Hubble, and Spitzer. These new results combined with the existing ones, allowed us to retrieve the thermal profiles and atmospheric compositions of four planets in particular. In our talk, we will discuss the robustness of our results and the similarities/differences among the explanets studied.

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