Astronomy and Astrophysics – Astrophysics
Scientific paper
Mar 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986a%26a...157l..17g&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 157, no. 2, March 1986, p. L17-L20.
Astronomy and Astrophysics
Astrophysics
86
Carbon Stars, Extraterrestrial Matter, Free Radicals, Infrared Stars, Stellar Composition, Stellar Envelopes, Electron Spin, Ground State, Interstellar Matter, Molecular Clouds
Scientific paper
The authors report the discovery of a new "non terrestrial" molecule in the envelope of the carbon star IRC +10216. This molecule is linear or slightly asymmetric and must have an odd number of electrons; its electronic ground state is very probably split by spin-rotation interaction, i.e. must be 2Σ if the molecule is linear. The rotation and spin-doubling constants are found to be 5966.8 MHz and ±15.1 MHz, respectively. The most likely candidates for such a radical are HSiCC (or its isomer HCCSi) and HSCC.
Cernicharo Jose
Gòmez-González Jesus
Guélin Michel
Kahane Claudine
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