Optical and infrared observations of IRC + 10216 and related objects - Dust shells modelling

Details Optical and infrared observations of IRC + 10216 and related objects - Dust shells modelling Optical and infrared observations of IRC + 10216 and related objects - Dust shells modelling

Sep 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988a%26a...203...85l&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 203, no. 1, Sept. 1988, p. 85-98.

Astronomy and Astrophysics

Astronomy

48

Carbon Stars, Cosmic Dust, Infrared Astronomy, Stellar Envelopes, Variable Stars, Cn Emission, Late Stars, Molecular Spectra, Silicon Carbides, Spectral Bands

Scientific paper

Optical and IR observations of three carbon-rich long-period variables, GL 971, GL 1235, and IRC + 10216, are used here to make a comparison between extreme carbon stars (ECS) and carbon-rich miras. Optical spectroscopy reveals the presence of CN molecular bands, and spectrophotometry shows the 11-micron feature attributed to SiC. Photometry is used to determine the broadband energy distribution at different phases. Except for the density of circumstellar shells, there is no basic difference between carbon miras and ECS. Limits on the scattering efficiency of dust in the circumstellar shell of IRC + 10216 are derived.

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