High Rydberg state carbon recombination lines toward Cassiopeia A: 332 MHz VLA observations and comparison with H I and molecular lines

Anantharamaiah, KR and Erickson, WC and Payne, HE and Kantharia, NG (1994) High Rydberg state carbon recombination lines toward Cassiopeia A: 332 MHz VLA observations and comparison with H I and molecular lines. In: Astrophysical journal, the, 430 (2). 682-689 .

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Abstract

We present observations of the C270alpha carbon recombination line, 21 cm neutral hydrogen line and (CO)-C-12 (J = 1 --> 0) molecular line toward Cas A. A comparison of the distribution of recombination line optical depths over the face of Cas A with that of H I optical depths and molecular line emission favors the association of C270alpha regions with H I rather than molecular clouds. The association makes it possible to self-consistently determine several physical parameters of the clouds by combining the recombination line and 21 cm H I measurements.

Item Type:	Journal Article
Publication:	Astrophysical journal, the
Publisher:	University of chicago press
Additional Information:	Copyright of this article belongs to University of chicago press.
Department/Centre:	Division of Electrical Sciences > Electrical Engineering
Date Deposited:	01 Apr 2011 06:11
Last Modified:	01 Apr 2011 06:11
URI:	http://eprints.iisc.ac.in/id/eprint/36536

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