The Vega Debris Disc: A View From Herschel

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Sibthorpe, B.
Vandenbussche, B.
Greaves, J. S.
Pantin, E.
Olofsson, G.
Acke, B.
Barlow, M. J.
Blommaert, Jadl
Bouwman, J.
Brandeker, A.

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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 mu m 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 mu m. Radial profiles of the disc surface brightness are produced, and a disc radius of 11 '' (similar to 85AU) 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.



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Sibthorpe, B., Bart Vandenbussche, J. S. Greaves, E. Pantin, Göran Olofsson, Bram Acke, M. J. Barlow et al. >The Vega debris disc: A view from Herschel.> Astronomy & Astrophysics. Vol. 518 (2010): L130.