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Atomic carbon emission from shocked and preshocked gas in the IC 443 supernova remnant

Phillips, T. G. and Keene, Jocelyn and van Dishoeck, Ewine F. (1995) Atomic carbon emission from shocked and preshocked gas in the IC 443 supernova remnant. In: The Physics and Chemistry of Interstellar Molecular Clouds. Lecture Notes in Physics. No.459. Springer , Berlin, pp. 96-97. ISBN 9783540604822.

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We have obtained maps of C I (³P₁→³P₀) emission at 492 GHz in the Supernova Remnant IC 443, concentrating on clump G. Broad-line shocked CI emission (≈10 kms⁻¹ FWHM) with spatial distribution similar to that of ¹²CO is observed. Also, very interestingly, we see a narrow-line (≈1 kms⁻¹ FWHM) component of C I emission that corresponds to no observed ¹²CO emission and its distribution is very different from that of the shocked component, apparently lying upstream from the shock front. Both wide and narrow components are also weakly visible in our ¹³CO(2→1) map. The inferred ratio of C I to CO in the shocked component is >0.5 and in the narrow-line component is >2, rather than the usual value of about 0.1. We speculate that this predominantly atomic region may mark the radiative precursor of the shock.

Item Type:Book Section
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van Dishoeck, Ewine F.0000-0001-7591-1907
Additional Information:© Springer-Verlag 1995. Work at the CSO is funded by NSF contract AST 90-15755.
Funding AgencyGrant Number
NSFAST 90-15755
Series Name:Lecture Notes in Physics
Issue or Number:459
Record Number:CaltechAUTHORS:20210126-071910444
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:107722
Deposited By: Tony Diaz
Deposited On:26 Jan 2021 18:33
Last Modified:16 Nov 2021 19:05

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