Detection of the 2Pi3/2 state of C5H

Details Detection of the 2Pi3/2 state of C5H Detection of the 2Pi3/2 state of C5H

Oct 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986a%26a...167l...5c&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 167, no. 1, Oct. 1986, p. L5-L7.

Astronomy and Astrophysics

Astrophysics

27

Brightness Temperature, Hydrocarbons, Infrared Stars, Stellar Envelopes, Abundance, Angular Momentum, Electronic Spectra, Ground State

Scientific paper

The authors report the detection in the molecular envelope of IRC +10216 of four doublets of the 2Π3/2 ladder of C5H, a new radical recently discovered by Cernicharo et al. (1986). From the line intensities they derive rotational temperatures of 14 and 24K for the 2Π1/2 and 2Π3/2 ladders respectively. The C5H column density, averaged over a 25arcsec beam, is found to be about few ×1013cm-2. The abundance ratio HC5N/C5H is found to be ≈40 within a factor 2.

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