C3 and infrared spectrophotometry of Y Canum Venaticorum

Details C3 and infrared spectrophotometry of Y Canum Venaticorum C3 and infrared spectrophotometry of Y Canum Venaticorum

Jun 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978apj...222l.129g&link_type=abstract

Astrophysical Journal, Part 2 - Letters to the Editor, vol. 222, June 15, 1978, p. L129-L132.

Astronomy and Astrophysics

Astronomy

18

Carbon Stars, Infrared Astronomy, Molecular Spectra, Stellar Spectrophotometry, Abundance, Acetylene, Hydrocyanic Acid, Infrared Spectrophotometers

Scientific paper

The 1.2- to 5.6-micron spectrum of the carbon star Y CVn is presented and discussed. The observations were made from the Kuiper Airborne Observatory at an altitude of 12.5 km, thereby avoiding most of the absorption due to terrestrial water vapor. Comparison of Y CVn near 5 microns with laboratory spectra provides possible evidence for the presence of the linear triatomic molecule C3. For the first time in a carbon star the clearly formed band heads of the CN red system between 1.2 and 2.3 microns are observed. Corroborative evidence for the presence of the molecules HCN and C2H2 is presented, and the relative contributions of C3, HCN, and C2H2 to the 3.1-micron absorption band are discussed. Spectra of two other carbon stars, TX Psc and S Cep, are presented for comparison.

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