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

作者: Travis S. Barman

DOI: 10.1086/587056

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

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