Inferring heat recirculation and albedo for exoplanetary atmospheres: Comparing optical phase curves and secondary eclipse data
Résumé
Basic atmospheric properties such as albedo and heat redistribution between day and nightside have been inferred for a number of planets using observations of secondary eclipses and thermal phase curves. Optical phase curves have not yet been used to constrain these atmospheric properties consistently. We re-model previously published phase curves of CoRoT-1b, TrES-2b and HAT-P-7b and infer albedos and recirculation efficiencies. These are then compared to previous estimates based on secondary eclipse data. We use a physically consistent model to construct optical phase curves. This model takes Lambertian reflection, thermal emission, ellipsoidal variations and Doppler boosting into account. CoRoT-1b shows a non-negligible scattering albedo (0.11
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https://hal.science/hal-01244746
Soumis le : mercredi 16 décembre 2015-11:04:40
Dernière modification le : mardi 16 avril 2024-15:22:17
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Identifiants
- HAL Id : hal-01244746 , version 1
- ARXIV : 1512.04908
- BIBCODE : 2016A&A...587A.149V
- DOI : 10.1051/0004-6361/201526297
Citer
P. von Paris, P. Gratier, Franck Selsis, Pascal Bordé. Inferring heat recirculation and albedo for exoplanetary atmospheres: Comparing optical phase curves and secondary eclipse data. Astronomy and Astrophysics - A&A, 2016, 587, pp.id.A149. ⟨10.1051/0004-6361/201526297⟩. ⟨hal-01244746⟩
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