Microwave Observations of the Cygnus X Region
Abstract
New observations of the radio region known as Cygnus X have been made at a frequency of 5000 Mc/s with an antenna beam width of 10 8. The results are displayed in a radio contour map which shows more than twenty discrete sources superimposed on extended areas of radio emission. Comparison with the observations of Pike and Drake, made at a frequency of 1414 Mc/s with a beam width of 10'0, shows every source in the region to have a thermal spectrum, with the exception of the source near the star Cygni, which appears to have an intensity spectral index of -0.7 + 0.3 and thus to be of non-thermal origin. The brightest source in the region is a thermal source of small angular diameter.
- Publication:
-
The Astrophysical Journal
- Pub Date:
- June 1966
- DOI:
- 10.1086/148691
- Bibcode:
- 1966ApJ...144..937D