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          Institute: MPI für Astronomie     Collection: Publikationen_mpia     Display Documents



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ID: 559064.0, MPI für Astronomie / Publikationen_mpia
A Herschel PACS and SPIRE study of the dust content of the Cassiopeia A supernova remnant
Authors:Barlow, M. J.; Krause, O.; Swinyard, B. M.; Sibthorpe, B.; Besel, M. A.; Wesson, R.; Ivison, R. J.; Dunne, L.; Gear, W. K.; Gomez, H. L.; Hargrave, P. C.; Henning, Th; Leeks, S. J.; Lim, T. L.; Olofsson, G.; Polehampton, E. T.
Language:English
Date of Publication (YYYY-MM-DD):2010
Title of Journal:Astronomy and Astrophysics
Journal Abbrev.:A&A
Volume:518
Start Page:id.L138
Review Status:Peer-review
Audience:Experts Only
Abstract / Description:Using the 3.5-m Herschel Space Observatory, imaging photometry of Cas A has been obtained in six bands between 70 and 500 μm with the PACS and SPIRE instruments, with angular resolutions ranging from 6 to 37”. In the outer regions of the remnant the 70-μm PACS image resembles the 24-μm image Spitzer image, with the emission attributed to the same warm dust component, located in the reverse shock region. At longer wavelengths, the three SPIRE bands are increasingly dominated by emission from cold interstellar dust knots and filaments, particularly across the central, western and southern parts of the remnant. Nonthermal emission from the northern part of the remnant becomes prominent at 500 μm. We have estimated and subtracted the contributions from the nonthermal, warm dust and cold interstellar dust components. We confirm and resolve for the first time a cool (~35 K) dust component, emitting at 70-160 μm, that is located interior to the reverse shock region, with an estimated mass of 0.075 M_ȯ. Herschel is an ESA space observatory with science instruments provided by European-led Principal Investigator consortia and with important participation from NASA.Figure 3 is only available in electronic form at <A href="http://www.aanda.org">http://www.aanda.org</A>
Free Keywords:ISM: supernova remnants; dust; extinction; Infrared: ISM
External Publication Status:published
Document Type:Article
Communicated by:N. N.
Affiliations:MPI für Astronomie
Identifiers:URL:http://adsabs.harvard.edu/abs/2010A%26A...518L.138... [ID No:1]
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