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Accounting for the foreground contribution to the dust emission towards Kepler's supernova remnant

Gomez, H.L. - Dunne, L. - Ivison, R.J. - Reynoso, E.M. - Thompson, M.A. - Sibthorpe, B. - Eales, S.A. - Delaney, T.M. - Maddox, S. - Isaak, K.
   
Fecha:
2009
Tipo de documento: 
info:eu-repo/semantics/article
info:ar-repo/semantics/artículo
info:eu-repo/semantics/publishedVersion
Formato:
application/pdf
Temas:
Galaxies: abundances - ISM: submillimetre dust - Radio lines: ISM - Submillimetre - Supernovae: Kepler
Descripción:
Whether or not supernovae contribute significantly to the overall dust budget is a controversial subject. Submillimetre (sub-mm) observations, sensitive to cold dust, have shown an excess at 450 and 850 μm in young remnants Cassiopeia A (Cas A) and Kepler. Some of the sub-mm emission from Cas A has been shown to be contaminated by unrelated material along the line of sight. In this paper, we explore the emission from material towards Kepler using sub-mm continuum imaging and spectroscopic observations of atomic and molecular gas, via H i, 12CO(J = 2-1) and 13CO(J = 2-1). We detect weak CO emission (peak T* A = 0.2-1 K, 1-2 km s -1 full width at half-maximum) from diffuse, optically thin gas at the locations of some of the sub-mm clumps. The contribution to the sub-mm emission from foreground molecular and atomic clouds is negligible. The revised dust mass for Kepler's remnant is 0.1-1.2 M ⊙, about half of the quoted values in the original study by Morgan et al., but still sufficient to explain the origin of dust at high redshifts. © 2009 RAS.
Fil:Reynoso, E.M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina.
Fuente:
Mon. Not. R. Astron. Soc. 2009;397(3):1621-1632
Identificador:
http://hdl.handle.net/20.500.12110/paper_00358711_v397_n3_p1621_Gomez
http://repositoriouba.sisbi.uba.ar/gsdl/cgi-bin/library.cgi?a=d&c=artiaex&d=paper_00358711_v397_n3_p1621_Gomez_oai
Derechos:
info:eu-repo/semantics/openAccess

Cita bibliográfica:

Gomez, H.L. ; Dunne, L. ; Ivison, R.J. ; et al. (2009).  Accounting for the foreground contribution to the dust emission towards Kepler's supernova remnant.  (info:eu-repo/semantics/article).  [consultado:  ] Disponible en el Repositorio Digital Institucional de la Universidad de Buenos Aires:  <http://hdl.handle.net/20.500.12110/paper_00358711_v397_n3_p1621_Gomez>