Eclipse Mapping as a Diagnostic of Hot Jupiter Atmospheres

Details Eclipse Mapping as a Diagnostic of Hot Jupiter Atmospheres Eclipse Mapping as a Diagnostic of Hot Jupiter Atmospheres

May 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aas...21010205r&link_type=abstract

American Astronomical Society Meeting 210, #102.05; Bulletin of the American Astronomical Society, Vol. 39, p.229

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Scientific paper

Recent Spitzer infrared measurements of hot Jupiters are beginning to constrain the global temperature structures of these tidally locked, strongly irradiated planets. Observations of secondary eclipses and orbital phase curves have indicated that these planets may experience some level of heat redistribution from their permanent day-sides to cold night-sides, but the efficiency and exact form of redistribution have yet to be fully constrained. Most current spectral emission models use a single effective temperature and account for heat redistribution on the planet surface by varying its value. The technique of eclipse mapping will uniquely provide spatially resolved information about the surface temperature structures of these planets by analyzing the shape of the emitted light curve for the period of partial occultation during secondary eclipse. We have used parameterized photospheric emission models to simulate ingress/egress light curves for the three brightest known eclipsing hot Jupiters and evaluated the degree to which these models could be distinguished from each other with repeated, noisy eclipse measurements. We find that the photometric accuracy of Spitzer is insufficient to use this tool effectively, but in the future JWST should be able to significantly probe photospheric details with only a few eclipse measurements, greatly informing hot Jupiter atmospheric modeling efforts.

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