On the Presence of Water and Global Circulation in the Transiting Planet HD 189733b

Abstract

Detailed models are compared to recent infrared observations of the nearby extrasolar planet, HD 189733b. It is demonstrated that atmospheric water is present and that the planet's day side has a non-isothermal structure down to gas pressures of ~ 0.1 bars. Furthermore, model spectra with different amounts of CO are compared to the observations and an atmosphere absent of CO is excluded at roughly 2-sigma. Constraining the CO concentration beyond that is unfortunately not possible with the current Spitzer photometry. However, radically enhanced (or depleted) metal abundances are unlikely and the basic composition of this planet is probably similar to that of its host star. When combined with Spitzer observations, a recent ground-based upper limit for the K-band day side flux allows one to estimate the day-to-night energy redistribution efficiency to be ~ 43%.

arXiv commentaccepted (2008 Feb. 5), ApJ Letters

References in corpus (17)

• A map of the day-night contrast of the extrasolar planet HD 189733b
• Atmospheric Circulation and Tides of "51Peg b-like" Planets
• ELODIE metallicity-biased search for transiting Hot Jupiters II. A very hot Jupiter transiting the bright K star HD189733
• Dynamics and Disequilibrium Carbon Chemistry in Hot Jupiter Atmospheres, With Application to HD 209458b
• Strong Infrared Emission from the Extrasolar Planet HD189733b
• Spitzer Infrared Spectrograph Observations of M, L, and T Dwarfs
• A Spectrum of an Extrasolar Planet
• Dynamic Meteorology at the Photosphere of HD 209458b
• Changing Face of the Extrasolar Giant Planet, HD 209458b
• A Spitzer Spectrum of the Exoplanet HD 189733b
• Identification of Absorption Features in an Extrasolar Planet Atmosphere
• Theory for the Secondary Eclipse Fluxes, Spectra, Atmospheres, and Light Curves of Transiting Extrasolar Giant Planets
• Irradiated Planets
• Phase-Dependent Properties of Extrasolar Planet Atmospheres
• On the Dayside Thermal Emission of Hot Jupiters
• Analysis of Spitzer Spectra of Irradiated Planets: Evidence for Water Vapor?
• Limits on the 2.2 microns contrast ratio of the close orbiting planet HD 189733b

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