The upper atmospheres of extrasolar planets

Details The upper atmospheres of extrasolar planets The upper atmospheres of extrasolar planets

Apr 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003eaeja.....5197l&link_type=abstract

EGS - AGU - EUG Joint Assembly, Abstracts from the meeting held in Nice, France, 6 - 11 April 2003, abstract #5197

Physics

Scientific paper

Over 100 extrasolar planets have been already detected, the vast majority of which by radial velocity measurements. While numerous models have been developed to describe their thermal structure, composition, spectrum, dynamics and evolution, the physical characterization of these objects remains remarkably poor, since in most cases only an estimate of the object's mass is available. Most observational efforts have so far been focused on close, short-period exoplanets ("hot Jupiters"), in particular on HD 209458B which appears to transit across its parent star and was confirmed to be as a genuine hydrogen-rich exoplanet . A highlight of these observations was the detection of sodium in its atmosphere (Charbonneau et al. 2002). Observational results and prospects will be briefly reviewed.

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