Molecular line spectra from circumstellar envelopes. II - The envelope of IRC + 10216

Details Molecular line spectra from circumstellar envelopes. II - The envelope of IRC + 10216 Molecular line spectra from circumstellar envelopes. II - The envelope of IRC + 10216

Jan 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989a%26a...208..219s&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 208, no. 1-2, Jan. 1989, p. 219-222.

Astronomy and Astrophysics

Astrophysics

4

Carbon Stars, Line Spectra, Molecular Spectra, Stellar Envelopes, Carbon Isotopes, Radiative Transfer, Stellar Mass Ejection

Scientific paper

Observations of the (C-12)O and (C-13)O J = 1 - 0 and J = 2 - 1 lines of IRC + 10216 are analyzed by means of a comoving frame radiative transfer program. A mass loss rate of 3 x 10 to the -5th solar mass/yr, a terminal wind velocity of 14.4 km/s, a stochastic velocity of 0.6 km/s, and an isotopic ratio (C-12)/(C-13) = 55 are derived. From the analysis, evidence is found for a non-uniform mass outflow in IRC + 10216.

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