Satellite observations of new infrared sources
Abstract
Preliminary results are reported for satellite observations of about 1000 IR sources at a wavelength of 2.7 microns. The observations were made in the declination zone between +10 and -10 deg to a limiting flux of 4 by 10 to the -16th power W/sq cm per micron. Of 83 previously unobserved sources, twenty are identified with late-type stars having visual magnitudes of 6 to 9. The nine sources with available luminosity classifications are found to be giant stars, and flux densities at 2.2 and 3.6 microns are predicted for four unreddened stars among these. Three other detected sources are positively identified with red variable stars; twenty more are tentatively identified as such. It is suggested that some of the 40 blank-field 2.7-micron sources detected at high galactic latitude may be Mira variables with thick dust shells located at large distances from the galactic plane.
- Publication:
-
COSPAR, 20th Plenary Meeting
- Pub Date:
- June 1977
- Bibcode:
- 1977cosp.meetS....H
- Keywords:
-
- Infrared Astronomy;
- Satellite Observation;
- Spaceborne Astronomy;
- Giant Stars;
- Infrared Stars;
- Late Stars;
- Mira Variables;
- Radiant Flux Density;
- Variable Stars;
- Astronomy