Detection of Interstellar C3 in the Spectra of ζ Ophiuchi, 20 Aquilae, and ζ Persei

Details Detection of Interstellar C3 in the Spectra of ζ Ophiuchi, 20 Aquilae, and ζ Persei Detection of Interstellar C3 in the Spectra of ζ Ophiuchi, 20 Aquilae, and ζ Persei

Dec 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000aas...197.0717b&link_type=abstract

American Astronomical Society, 197th AAS Meeting, #07.17; Bulletin of the American Astronomical Society, Vol. 32, p.1404

Astronomy and Astrophysics

Astrophysics

Scientific paper

The smallest polyatomic carbon chain, C3, has been identified in interstellar clouds (Av ~1 mag) towards ζ Ophiuchi, 20 Aquilae, and ζ Persei by detection of the origin band of its A1Π u-X1Σ+g electronic transition, near 4052Å. Individual rotational lines were resolved up to J=30 enabling the rotational level column densities and temperature distributions to be determined. The inferred limits for the total column densities ( ~1 to 2*E12 cm-2) offer a strong incentive to laboratory and astrophysical searches for the longer carbon chains. Concurrent searches for C2+, C2- and C3- were negative but provide sensitive estimates for their maximum column densities.

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