On Signatures of Atmospheric Features in Thermal Phase Curves of Hot Jupiters

Details On Signatures of Atmospheric Features in Thermal Phase Curves of Hot Jupiters On Signatures of Atmospheric Features in Thermal Phase Curves of Hot Jupiters

2007-12-13

arxiv.org/abs/0712.2242v2

Astronomy and Astrophysics

Astrophysics

22 pages, 6 figures, 1 table, accepted for publication in ApJ

Scientific paper

10.1086/589499

Turbulence is ubiquitous in Solar System planetary atmospheres. In hot Jupiter atmospheres, the combination of moderately slow rotation and thick pressure scale height may result in dynamical weather structures with unusually large, planetary-size scales. Using equivalent-barotropic, turbulent circulation models, we illustrate how such structures can generate a variety of features in the thermal phase curves of hot Jupiters, including phase shifts and deviations from periodicity. Such features may have been spotted in the recent infrared phase curve of HD 189733b. Despite inherent difficulties with the interpretation of disk-integrated quantities, phase curves promise to offer unique constraints on the nature of the circulation regime present on hot Jupiters.

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