A search has been carried out for the C2- ion in diffuse clouds toward HD 23180, HD 24912, HD 24398, HD 46711, and HD 50064 using the HIDES spectrometer on the Okayama 188-cm telescope. An upper limit of 8.3 * 1010-1.8 * 1012 cm-2 was obtained for the C2- column density. The upper limit value (3.8 * 1011 cm-2) toward HD 23180 is two orders of magnitude smaller than that of the C2 radical. Possible production mechanisms for C2- are discussed.

Search for C-2(-) in diffuse clouds / S. Civis, Y. Hosaki, E. Kagi, H. Izumiura, K. Yanagisawa, T. Sedivcova, K. Kawaguchi. - In: PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN. - ISSN 0004-6264. - 57:4(2005), pp. 605-609. [10.1093/pasj/57.4.605]

Search for C-2(-) in diffuse clouds

T. Sedivcova
Penultimo
;
2005

Abstract

A search has been carried out for the C2- ion in diffuse clouds toward HD 23180, HD 24912, HD 24398, HD 46711, and HD 50064 using the HIDES spectrometer on the Okayama 188-cm telescope. An upper limit of 8.3 * 1010-1.8 * 1012 cm-2 was obtained for the C2- column density. The upper limit value (3.8 * 1011 cm-2) toward HD 23180 is two orders of magnitude smaller than that of the C2 radical. Possible production mechanisms for C2- are discussed.
ISM: clouds; ISM: lines and bands; ISM: molecules; Molecular processes
2005
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2434/31269
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