Water vapour and hydrogen in the terrestrial-planet-forming region of a protoplanetary disk

J. A. Eisner ()
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J. A. Eisner: 601 Campbell Hall, University of California, Berkeley, California 94720, USA

Nature, 2007, vol. 447, issue 7144, 562-564

Abstract: A hint of watery planets Planetary systems are formed within the disks of dust and gas around young stars that are the left-overs from the star formation process. The terrestrial planet forming regions of these disks subtend tiny angles, way beyond the angular resolution of even the largest ground- and space-based telescopes. Now using a new instrument at the Keck Interferometer, gases including water vapour and atomic hydrogen have been observed within one astronomical unit (one Sun–Earth distance) of the young star MWC 480. The water vapour was probably produced by the sublimation of migrating icy bodies, and it could provide a reservoir of water for the production of terrestrial planets.

Date: 2007
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DOI: 10.1038/nature05867

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