SIMBAD references

2005PASJ...57..605C - Publ. Astron. Soc. Jap., 57, 605-609 (2005/August-0)

Search for C2– in diffuse clouds.

CIVIS S., HOSAKI Y., KAGI E., IZUMIURA H., YANAGISAWA K., SEDIVCOVA T. and KAWAGUCHI K.

Abstract (from CDS):

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 * 10<sup>10</sup> – 1.8 * 10<sup>12</sup> cm<sup>-2</sup> was obtained for the C<sub>2</sub><sup>-</sup> column density. The upper limit value (3.8 * 10<sup>11</sup> cm<sup>-2</sup>) toward HD 23180 is two orders of magnitude smaller than that of the C<sub>2</sub> radical. Possible production mechanisms for C<sub>2</sub><sup>-</sup> are discussed.

Abstract Copyright: ∼

Journal keyword(s): ISM: clouds - ISM: lines and bands - ISM: molecules - molecular processes

Simbad objects: 8

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