Observations of the SiC2 radical toward IRC + 10216 at 1.27 centimeters

Details Observations of the SiC2 radical toward IRC + 10216 at 1.27 centimeters Observations of the SiC2 radical toward IRC + 10216 at 1.27 centimeters

Mar 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985apj...290l..29s&link_type=abstract

Astrophysical Journal, Part 2 - Letters to the Editor (ISSN 0004-637X), vol. 290, March 1, 1985, p. L29-L33.

Astronomy and Astrophysics

Astrophysics

21

Carbon Stars, Centimeter Waves, Molecular Energy Levels, Silicon Carbides, Stellar Envelopes, Abundance, Brightness Temperature, Molecular Excitation, Molecular Rotation, Radial Velocity

Scientific paper

The first centimeter-wave transition of the recently identified SiC2 radical has been observed in the envelope of the evolved carbon star IRC +10216. The excellent agreement between the measured astronomical rest frequency and the predicted frequency, and the measured line intensity support the SiC2 identification. The high-resolution line profile and mapping data are used to estimate the size of the IRC +10216 SiC2 envelope and the abundance of SiC2 relative to H2.

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