Spectroscopic observations of optically identified AFGL/CRL infrared sources. II.
Abstract
Spectra have been ohtained of 34 optical candidates for AFCL/CRL sources. Nineteen are classifiable as late-type K or M stars, eleven as carbon stars, and four as heavily obscured or nebulous objects. Definite indications of circumstellar extinction are found for a few late M giants. Key words: infrared sources-carbon stars-circumstellar dust shells
- Publication:
-
Publications of the Astronomical Society of the Pacific
- Pub Date:
- December 1977
- DOI:
- 10.1086/130235
- Bibcode:
- 1977PASP...89..829C
- Keywords:
-
- Carbon Stars:Infrared Sources;
- Circumstellar Shells:M Giants;
- Infrared Sources:Late-Type Giants;
- Infrared Sources: Optical Identifications