The reddest stars in the Two Micron Sky Survey.
Abstract
A summary of the positions, infrared photometry, spectral classifications, maser properties and indications of variability is provided for the 96 sources in the Two-Micron Sky Survey for which (I'-K) is at least about 6 mag. The majority of the sources are long-period Mira variables of spectral class later than M6, or C; a few are distant reddened supergiants. Both the frequency of detections of maser emission and photometry of these stars in the range 2-20 microns provide evidence that most of them have well-developed circumstellar envelopes which must be responsible at least in part for their extreme redness at wavelengths less than or about equal to 2 microns.
- Publication:
-
Earth and Extraterrestrial Sciences
- Pub Date:
- 1979
- Bibcode:
- 1979EExSc...3..161K
- Keywords:
-
- Infrared Astronomy;
- Omicron Ceti Star;
- Sky Surveys (Astronomy);
- Stellar Spectra;
- Supergiant Stars;
- Variable Stars;
- Astronomical Catalogs;
- Infrared Spectroscopy;
- Interstellar Masers;
- Mira Variables;
- Star Distribution;
- Stellar Envelopes;
- Circumstellar Envelopes:Mira Stars;
- Mira Stars:Reddening