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A Comparison of c-C₃H₂ and l-C₃H₂ in the Spiral Arm Clouds

Kulczak-Jastrzębska, M. and Lis, D. and Gerin, M. (2012) A Comparison of c-C₃H₂ and l-C₃H₂ 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-C₃H₂ 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 C₃H₂ (N_c/N_l). The abundance ratio is found to be 3-5 in the sources where l-C₃H₂ was previously detected. A possible source of uncertainty in the determination of N_c/N_l is related to the estimate of N(c-C₃H₂). 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:20200304-104110552
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:101707
Deposited By: Tony Diaz
Deposited On:04 Mar 2020 19:03
Last Modified:04 Mar 2020 19:03

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