A planetary system as the origin of structure in Fomalhaut's dust belt

Paul Kalas (), James R. Graham and Mark Clampin
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Paul Kalas: University of California
James R. Graham: University of California
Mark Clampin: Goddard Space Flight Center

Nature, 2005, vol. 435, issue 7045, 1067-1070

Abstract: Fomalhaut proceedings In 1983 the IRAS orbiting satellite detected excess infrared radiation from the direction of Fomalhaut, a first magnitude star in the otherwise dim constellation Piscis Austrinus. It was radiation from a huge dusty disk around the star, about four times the size of our Solar System. The Advanced Camera for Surveys onboard the Hubble Space Telescope has now detected Fomalhaut's dust complex at high resolution at optical wavelengths. The disk is offset from the star in a way that suggests the presence of several planets. The debris disks around Beta Pictoris and AU Microscopii are both edge-on, and the disk around HR 4796A has a small radius. So the Fomalhaut disk, seen on a slope rather like the ring around Saturn, older than the others and closer to us, may become the disk of choice for the study of planet formation.

Date: 2005
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DOI: 10.1038/nature03601

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