Water vapour absorption in the clear atmosphere of a Neptune-sized exoplanet

Jonathan Fraine (), Drake Deming, Bjorn Benneke, Heather Knutson, Andrés Jordán, Néstor Espinoza, Nikku Madhusudhan, Ashlee Wilkins and Kamen Todorov
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Jonathan Fraine: University of Maryland, College Park
Drake Deming: University of Maryland, College Park
Bjorn Benneke: California Institute of Technology
Heather Knutson: California Institute of Technology
Andrés Jordán: Instituto de Astrofísica, Pontificia Universidad Católica de Chile, 7820436 Macul, Santiago, Chile
Néstor Espinoza: Instituto de Astrofísica, Pontificia Universidad Católica de Chile, 7820436 Macul, Santiago, Chile
Nikku Madhusudhan: Institute of Astronomy, University of Cambridge, Madingley Road, Cambridge CB3 0HA, UK
Ashlee Wilkins: University of Maryland, College Park
Kamen Todorov: ETH Zürich, 8049 Zürich, Switzerland

Nature, 2014, vol. 513, issue 7519, 526-529

Abstract: Space telescope observations of the transmission spectrum of the extrasolar planet HAT-P-11b, which is about the same size as Neptune, reveal water vapour absorption at a wavelength of 1.4 micrometres and indicate that the planetary atmosphere is predominantly clear down to an altitude corresponding to about 1 millibar.

Date: 2014
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DOI: 10.1038/nature13785

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