The infrared spectrum of the carbon star Y Canum Venaticorum between 1.2 and 30 microns

Astronomy and Astrophysics – Astrophysics

Scientific paper

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Carbon Stars, Infrared Spectra, Stellar Spectra, Stellar Spectrophotometry, Variable Stars, Absorption Spectra, Continuous Spectra, Cosmic Dust, Emission Spectra, Photosphere, Silicon Carbides, Spectral Resolution, Stellar Atmospheres, Stellar Envelopes

Scientific paper

The paper deals with spectrophotometric observations covering the essentially complete wavelength interval between 1.2 and 30.0 microns. The observations confirm the identification of the C3 band at 5.2 microns. They show that if SiC2 is present, the SiC1 absorption band at 5.7 microns would be obscured by C3 at a 1% spectral resolution. Silicon carbide emission at 11.5 microns exists simultaneously with C3 absorption at 5.2 microns, requiring a contribution of both species to the violet opacity of Y CVn.

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