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The Vega debris disc: A view from Herschel

Sibthorpe, B., Vandenbussche, B., Greaves, J. S., Pantin, E., Olofsson, G., Acke, B., Barlow, M. J., Blommaert, J. A. D. L., Bouwman, J., Brandeker, A., Cohen, M., De Meester, W., Dent, W. R. F., Di Francesco, J., Dominik, C., Fridlund, M., Gear, Walter Kieran, Glauser, A. M., Gomez, Haley Louise, Hargrave, Peter Charles, Harvey, P. M., Henning, Th., Heras, A. M., Hogerheijde, M. R., Holland, W. S., Ivison, R. J., Leeks, S. J., Lim, T. L., Liseau, R., Matthews, B. C., Naylor, D. A., Pilbratt, G. L., Polehampton, E. T., Regibo, S., Royer, P., Sicilia-Aguilar, A., Swinyard, B. M., Waelkens, C., Walker, H. J. and Wesson, R. 2010. The Vega debris disc: A view from Herschel. Astronomy and Astrophysics 518 , L130. 10.1051/0004-6361/201014574

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Abstract

We present five band imaging of the Vega debris disc obtained using the Herschel Space Observatory. These data span a wavelength range of 70–500 μm with full-width half-maximum angular resolutions of 5.6–36.9”. The disc is well resolved in all bands, with the ring structure visible at 70 and 160 μm. Radial profiles of the disc surface brightness are produced, and a disc radius of 11” (~85 AU) is determined. The disc is seen to have a smooth structure thoughout the entire wavelength range, suggesting that the disc is in a steady state, rather than being an ephemeral structure caused by the recent collision of two large planetesimals.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Physics and Astronomy
Subjects: Q Science > QB Astronomy
Uncontrolled Keywords: stars: individual: Vega / instrumentation: photometers / methods: observational
Publisher: EDP Sciences
ISSN: 0004-6361
Last Modified: 04 Jun 2017 03:31
URI: http://orca.cf.ac.uk/id/eprint/22234

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