Toward Eclipse Mapping of Hot Jupiters

Details Toward Eclipse Mapping of Hot Jupiters Toward Eclipse Mapping of Hot Jupiters

2006-12-14

arxiv.org/abs/astro-ph/0612412v2

Astrophys.J.664:1199-1209,2007

Astronomy and Astrophysics

Astrophysics

32 pages, 6 figures, 3 tables, accepted for publication in ApJ

Scientific paper

10.1086/519213

Recent Spitzer infrared measurements of hot Jupiter eclipses suggest that eclipse mapping techniques could be used to spatially resolve the day-side photospheric emission of these planets using partial occultations. As a first step in this direction, we simulate ingress/egress lightcurves for the three brightest known eclipsing hot Jupiters and evaluate the degree to which parameterized photospheric emission models can 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. On the other hand, the level of photospheric details that could be probed with a few JWST eclipse measurements could greatly inform hot Jupiter atmospheric modeling efforts. A JWST program focused on non-parametric eclipse map inversions for hot Jupiters should be actively considered.

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