Sodium Absorption from the Exoplanetary Atmosphere of HD 189733b Detected in the Optical Transmission Spectrum

Redfield, Seth; Endl, Michael; D. Cochran, William; Koesterke, Lars

doi:10.1086/527475

Public

Sodium Absorption from the Exoplanetary Atmosphere of HD 189733b Detected in the Optical Transmission Spectrum

Published in The Astrophysical Journal • Jan 4, 2008

Authors:

Seth Redfield

Michael Endl

William D. Cochran

Abstract

We present the first ground-based detection of sodium absorption in the transmission spectrum of an extrasolar planet. Absorption due to the atmosphere of the extrasolar planet HD 189733b is detected in both lines of the Na I doublet. High spectral resolution observations were taken of 11 transits w...

Subject

Exoplanet

Hot Jupiter

Physics

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