The Vega debris disc: A view from Herschel

B. Sibthorpe, B. Vandenbussche, J. S. Greaves, E. Pantin, G. Olofsson, B. Acke, M. J. Barlow, J. A. D. L. Blommaert, J. Bouwman, A. Brandeker, Milton Cohen, W. De Meester, W. R. F. Dent, J. Di Francesco, C. Dominik, M. Fridlund, W. K. Gear, A. M. Glauser, H. L. Gomez, P. C. HargraveP. M. Harvey, Th. Henning, A. M. Heras, M. R. Hogerheijde, W. S. Holland, R. J. Ivison, S. J. Leeks, T. L. Lim, R. Liseau, B. C. Matthews, D. A. Naylor, G. L. Pilbratt, E. T. Polehampton, S. Regibo, P. Royer, A. Sicilia-Aguilar, B. M. Swinyard, C. Waelkens, H. J. Walker, R. Wesson

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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 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.
Original languageEnglish
Article numberL130
Number of pages5
JournalAstronomy and Astrophysics
Volume518
DOIs
Publication statusPublished - 16 Jul 2010

Keywords

  • stars: individual: Vega instrumentation: photometers methods: observational DUST EVOLUTION MISSION SPITZER IMAGES STARS

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    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, W. K., Glauser, A. M., Gomez, H. L., ... Wesson, R. (2010). The Vega debris disc: A view from Herschel. Astronomy and Astrophysics, 518, [L130]. https://doi.org/10.1051/0004-6361/201014574