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IRAS Observations of Collisionally Heated Dust in Large Magellanic Cloud Supernova Remnants

Published online by Cambridge University Press:  12 April 2016

James R. Graham ,
A. Evans ,
J.S. Albinson ,
M.F. Bode  and
W.P.S. Meikle
James R. Graham
Affiliation:
Imperial College, London Lawrence Berkeley Laboratory, University of California
A. Evans
Affiliation:
University of Keele
J.S. Albinson
Affiliation:
University of Keele
M.F. Bode
Affiliation:
Lancashire Polytechnic
W.P.S. Meikle
Affiliation:
Imperial College, London

Abstract

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IRAS additional observations show that luminous (104−105 L⊙) far-IR sources are associated with the Large Magellanic Cloud (LMC) supernova remnants N63A, N49, N49B, and N186D. Comparison of the IRAS and X-ray data shows that a substantial fraction of the IR emission from three of the SNRs can be accounted for by collisionally heated dust. The ratio of dust-grain cooling to total atomic cooling is ~10 in X-ray emitting gas (T~106 K). We show why dust cooling does not dominate, but probably speeds SNR evolution in an inhomogeneous interstellar medium.

Type
Research Article
Information
International Astronomical Union Colloquium , Volume 101: Supernova Remnants and the Interstellar Medium , 1988 , pp. 383 - 386
Copyright
Copyright © Cambridge University Press 1988

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