Molecular lines in IRC+10216 and CIT 6

Details Molecular lines in IRC+10216 and CIT 6 Molecular lines in IRC+10216 and CIT 6

Jun 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985a%26a...147..143h&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 147, no. 1, June 1985, p. 143-154.

Astronomy and Astrophysics

Astrophysics

20

Carbon Stars, Molecular Spectra, Stellar Envelopes, Stellar Spectra, Atmospheric Attenuation, Cyanoacetylene, Optical Thickness, Radial Velocity, Stellar Luminosity

Scientific paper

Observations of several molecules in a range of transitions in the circumstellar envelopes of the carbon stars IRC+10 deg 216 and CIT 6 are presented. The data show strong evidence for time variability of the SiS J = 1-0 profile, apparently in phase with the infrared variations in IRC+10 deg 216. There is probably in-phase variability of the HC3N J = 2-1 line and there are no significant differences in the relative abundances of observed molecules in the envelopes of the two stars. The absence of SiS J = 1-0 emission toward CIT 6 may indicate that this star has a smaller mass loss rate and is less than three times more distant than IRC+10 deg 216.

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