The β Pictoris disk imaged by Herschel PACS and SPIRE
| Autor: | B. Vandenbussche, B. Sibthorpe, B. Acke, E. Pantin, G. Olofsson, C. Waelkens, C. Dominik, M. J. Barlow, J. A. D. L. Blommaert, J. Bouwman, A. Brandeker, M. Cohen, W. De Meester, W. R. F. Dent, K. Exter, J. Di Francesco, M. Fridlund, W. K. Gear, A. M. Glauser, H. L. Gomez, J. S. Greaves, P. C. Hargrave, P. M. Harvey, Th. Henning, A. M. Heras, M. R. Hogerheijde, W. S. Holland, R. Huygen, R. J. Ivison, C. Jean, 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, H. J. Walker, R. Wesson |
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| Přispěvatelé: | Low Energy Astrophysics (API, FNWI) |
| Jazyk: | angličtina |
| Rok vydání: | 2010 |
| Předmět: | |
| Zdroj: | Astronomy & Astrophysics, 518. EDP Sciences |
| ISSN: | 1432-0746 0004-6361 |
| Popis: | We obtained Herschel PACS and SPIRE images of the thermal emission of the debris disk around the A5V star {\beta} Pic. The disk is well resolved in the PACS filters at 70, 100, and 160 {\mu}m. The surface brightness profiles between 70 and 160 {\mu}m show no significant asymmetries along the disk, and are compatible with 90% of the emission between 70 and 160 {\mu}m originating in a region closer than 200 AU to the star. Although only marginally resolving the debris disk, the maps obtained in the SPIRE 250 - 500 {\mu}m filters provide full-disk photometry, completing the SED over a few octaves in wavelength that had been previously inaccessible. The small far-infrared spectral index ({\beta} = 0.34) indicates that the grain size distribution in the inner disk ( |
| Databáze: | OpenAIRE |
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