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Title:
Cold Dust in Kepler's Supernova Remnant
Authors:
Morgan, H. L.; Dunne, L.; Eales, S. A.; Ivison, R. J.; Edmunds, M. G.
Affiliation:
AA(Department of Physics and Astronomy, University of Wales, P.O. Box 913, Cardiff CF2 3YB, UK; .), AB(Department of Physics and Astronomy, University of Wales, P.O. Box 913, Cardiff CF2 3YB, UK; .), AC(Department of Physics and Astronomy, University of Wales, P.O. Box 913, Cardiff CF2 3YB, UK; .), AD(Astronomy Technology Centre, Royal Observatory, Blackford Hill, Edinburgh EH9 3HJ, UK.), AE(Department of Physics and Astronomy, University of Wales, P.O. Box 913, Cardiff CF2 3YB, UK; .)
Publication:
The Astrophysical Journal, Volume 597, Issue 1, pp. L33-L36. (ApJL Homepage)
Publication Date:
11/2003
Origin:
UCP
ApJ Keywords:
ISM: Dust, Extinction, ISM: Supernova Remnants, Stars: Supernovae: Individual: Name: Kepler
DOI:
10.1086/379639
Bibliographic Code:
2003ApJ...597L..33M

Abstract

The timescales to replenish dust from the cool winds of asymptotic giant branch stars are believed to be greater than the timescales for dust destruction. In high-redshift galaxies, this problem is further compounded as the stars take longer than the age of the universe to evolve into the dust production stages. To explain these discrepancies, dust formation in supernovae (SNe) is required to be an important process, but until recently dust in supernova remnants (SNRs) has only been detected in very small quantities. We present the first submillimeter observations of cold dust in Kepler's SNR using the Submillimeter Common-User Bolometric Array. A two-component dust temperature model is required to fit the spectral energy distribution with Twarm~102 K and Tcold~17 K. The total mass of dust implied for Kepler is ~1 Msolar-1000 times greater than previous estimates. Thus SNe, or their progenitors, may be important dust formation sites.
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