Detecting the Signature of Eccentric Exoplanets During Periastron Passage

Details Detecting the Signature of Eccentric Exoplanets During Periastron Passage Detecting the Signature of Eccentric Exoplanets During Periastron Passage

May 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011sptz.prop80132k&link_type=abstract

Spitzer Proposal ID #80132

Astronomy and Astrophysics

Astronomy

Scientific paper

Characterization of exoplanets has matured in recent years, particularly through studies of exoplanetary atmospheres of transiting planets at infra-red wavelenegths. A relatively unexplored region of exoplanet parameter space is the thermal detection of long-period eccentric planets during periastron passage. Detection of these signatures reveals important information on the albedo, radiative time constant, and heat redistribution efficiency of giant planetary atmospheres under these extreme conditions. Here we propose to monitor three such exoplanets whose orbital parameters have already been refined to great precision. The results of this study will constrain heat signatures from these planets and be used in building atmospheric models for planets which undergo large changes in flux.

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