Strong water absorption in the dayside emission spectrum of the planet HD 189733b

Carl J. Grillmair (), Adam Burrows, David Charbonneau, Lee Armus, John Stauffer, Victoria Meadows, Jeffrey van Cleve, Kaspar von Braun and Deborah Levine
Additional contact information
Carl J. Grillmair: Spitzer Science Center, 1200 East California Boulevard, Pasadena, California 91125, USA
Adam Burrows: Princeton University, Peyton Hall, Ivy Lane, Princeton, New Jersey 08544, USA
David Charbonneau: Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, Massachusetts 02138, USA
Lee Armus: Spitzer Science Center, 1200 East California Boulevard, Pasadena, California 91125, USA
John Stauffer: Spitzer Science Center, 1200 East California Boulevard, Pasadena, California 91125, USA
Victoria Meadows: University of Washington, Box 351580, Seattle, Washington 98195, USA
Jeffrey van Cleve: Ball Aerospace & Technologies Corporation, PO Box 1062, Boulder, Colorado 80306, USA
Kaspar von Braun: Michelson Science Center, California Institute of Technology, Mail Stop 100-22, Pasadena, California 91125, USA
Deborah Levine: Spitzer Science Center, 1200 East California Boulevard, Pasadena, California 91125, USA

Nature, 2008, vol. 456, issue 7223, 767-769

Abstract: Extrasolar planets: a hot and steamy 'Jupiter' A long-term series of observations with the Spitzer Space Telescope has generated the highest quality spectrum so far obtained for an extrasolar planet. Previous spectra of the 'hot Jupiter' HD 189733b did not detect the predicted abundance of water vapour in the atmosphere, but the new data reveal strong water absorption in a mid-infrared emission spectrum. The differences between these and the earlier observations point to the possibility that predicted planetary-scale dynamical weather structures might alter the emission spectrum over time.

Date: 2008
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DOI: 10.1038/nature07574

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