The Spitzer Exoplanetary Atmosphere Survey

Details The Spitzer Exoplanetary Atmosphere Survey The Spitzer Exoplanetary Atmosphere Survey

Dec 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008sptz.prop60003h&link_type=abstract

Spitzer Proposal ID #60003

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Scientific paper

We propose a Target of Opportunity (ToO) program to observe photometric eclipses and transits of extrasolar planets. Spitzer eclipses are the most fundamental (and in many cases the only) direct exoplanetary measurements possible with current instrumentation; transits measure the radius and eclipses the intrinsic fluxes from these worlds. We will populate a figure of predicted equilibrium vs. observed brightness temperatures, which is starting to show patterns indicating different classes of atmospheric behavior. The observations will constrain models of composition, chemistry, and atmospheric dynamics on each planet. The events will also inform follow-on work with other telescopes for the brightest targets. Based on discovery statistics, 25-35 new, observable, transiting planets will be announced in 2009, and somewhat more in 2010. Also, a number of known planets with good predicted signal have not yet been observed. We will publish digital lightcurves with journal articles and submit them for archiving. No comparable opportunity to observe exoplanets will be available until JWST.

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