Spectra and Analyses of the Secondary Transits of Exoplanets

Details Spectra and Analyses of the Secondary Transits of Exoplanets Spectra and Analyses of the Secondary Transits of Exoplanets

Jan 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aas...21532701g&link_type=abstract

American Astronomical Society, AAS Meeting #215, #327.01; Bulletin of the American Astronomical Society, Vol. 42, p.423

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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. The secondary eclipse allows us to measure the emission from the planet's dayside atmosphere by comparing the measured planet plus primary star emission to the emission of star alone, when it eclipses the planet. The resultant exoplanetary spectra reveal information on the temperature and composition profile of the planet. In our talk we will discuss the radiative transfer analysis of the secondary transit spectra recorded by HST, Spitzer and ground-based observations of those exoplanets with measured emission spectra or photometry. We will present derivations of the temperature and composition profiles retrieved, and discuss their implications with respect to the exoplanet's chemistry and dynamics.

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