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A Comparison of c-C_3H_2 and I-C_3H_2 in the Spiral Arm Clouds

Kulczak-Jastrzębska, M. and Lis, D. and Gerin, M. (2012) A Comparison of c-C_3H_2 and I-C_3H_2 in the Spiral Arm Clouds. Acta Astronomica, 62 (3). pp. 313-321. ISSN 0001-5237.

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Using the IRAM 30-m telescope, we observed molecular absorption lines from c-C_3H_2 produced in diffuse clouds toward the high-mass star forming regions W51 e1/e2 and W49N to determine the abundance ratio between the cyclic and linear isomers of C_3H_2 (N_c/N_l). The abundance ratio is found to be 3-5 in the sources where l-C_3H_2 was previously detected. A possible source of uncertainty in the determination of N_c/N_l is related to the estimate of N(c-C_3H_2). The main goal of this paper is verification of this hypothesis.

Item Type:Article
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Lis, D.0000-0002-0500-4700
Additional Information:© 2012 Copernicus Foundation for Polish Astronomy. Received August 29, 2012.
Subject Keywords:Radio lines: ISM, ISM: molecules, ISM: abundances
Issue or Number:3
Record Number:CaltechAUTHORS:20121204-141524600
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Official Citation:A Comparison of c-C_3H_2 and l-C_3H_2 in the Spiral Arm Clouds Kulczak-Jastrzębska, M.; Lis, D.; Gerin, M. Acta Astronomica, 2012 vol 62, no 3, p. 313-321
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:35796
Deposited By: Ruth Sustaita
Deposited On:04 Dec 2012 22:51
Last Modified:19 May 2020 20:22

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