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Submillimetre images of dusty disks around nearby main-sequence stars [Abstract]

Holland, W., Greaves, J., Coulson, I., Robson, I., Zuckerman, B., Becklin, E., Webb, R., McCarthy, C., Dent, B., Gear, Walter Kieran and Walther, D. 1997. Submillimetre images of dusty disks around nearby main-sequence stars [Abstract]. Bulletin of the American Astronomical Society 29 , p. 1286.

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Abstract

he existence of planetary systems around other stars is one of the most hotly debated issues in modern-day astronomy. A clue to such systems is the presence of disks of dust particles and gas out of which planets are thought to coagulate. In this paper we present the first submillimetre images of the dust around the nearby stars Beta Pictoris, Fomalhaut and Vega. In each case, the dust extent is comparable to the size of the Kuiper belt in the Solar System. For Beta Pictoris the dust emission closely follows that seen in optical images. In the case of Fomalhaut the dust distribution displays a central cavity approximately the size of our planetary system, and the image can be interpreted as an edge-on torus, within which planetary formation has begun. The results for Vega are the most challenging to current theories of planetary formation, and show a peak of the dust emission offset from the star. These results will be discussed more fully in the display paper.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Physics and Astronomy
Subjects: Q Science > QB Astronomy
Additional Information: Presented at the American Astronomical Society 191st AAS Meeting: Circumstellar Disks & Shells held in Washington, DC, January 2008
Publisher: American Astronomical Society
Last Modified: 04 Jun 2017 04:19
URI: http://orca-mwe.cf.ac.uk/id/eprint/36768

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