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

• Autorzy: Kulczak-Jastrzębska M. , Lis D. , Gerin M.
• Języki publikacji: EN

Abstrakty

EN

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.

Słowa kluczowe

EN

radio lines: ISM; ISM: molecules; ISM: abundances

• Wydawca: Copernicus Foundation for Polish Astronomy
• Czasopismo: Acta Astronomica
• Rocznik: 2012
• Tom: Vol. 62, No. 3
• Strony: 313--321
• Opis fizyczny: Bibliogr. 20 poz., rys., tab.

Twórcy

autor

Kulczak-Jastrzębska M.

• Astronomical Observatory of the Jagiellonian University, 30-244 Orla 171, Kraków, Poland

autor

Lis D.

• California Institute of Technology, Cahill Center for Astronomy and Astrophysics 301-17, Pasadena, CA 91125, USA

autor

Gerin M.

• LERMA, UMR 8112 du CNRS, École Normale Supérieure and Observatoire de Paris, 24 Rue Lhomond, 75231 Paris cedex 05, France

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