CO observations of mass outflow from the infrared star CIT 6

Details CO observations of mass outflow from the infrared star CIT 6 CO observations of mass outflow from the infrared star CIT 6

Oct 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979apj...233..140k&link_type=abstract

Astrophysical Journal, Part 1, vol. 233, Oct. 1, 1979, p. 140-144.

Astronomy and Astrophysics

Astrophysics

15

Carbon Monoxide, Carbon Stars, Infrared Stars, Molecular Spectra, Stellar Mass Ejection, Abundance, Emission Spectra, Giant Stars, Stellar Envelopes, Time Dependence

Scientific paper

Results are presented for observations of CO emission from the molecular envelope surrounding the carbon star CIT 6 (IRC + 30219) made at five epochs spanning 17 months. There is no evidence for any variation in the CO line intensity on this time scale, but the intensity is much lower than that reported by previous authors. In addition, an earlier report of (C-13)O line emission cannot be confirmed, and the carbon isotope ratio C-12/C-13 is measured to be greater than 20. The shape of the CO emission line observed at all epochs can be fitted by a uniformly expanding cloud model in which the CO is optically thin except through the longest lines of sight.

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