Cygnus A
- Cygnus A (also 3C 405) is a radio source associated with a
central dominant elliptical galaxy in a poor
cluster of galaxies. The radio emission is the prototype FRII
double lobe source.
An image of the optical (greyscale) and radio continuum (green contour)
can be viewed by clicking
on the small image below.
Image information
- Optical: Digitized Sky Survey, ASP/STScI/NASA/ESA
- Radio: VLA A, B, and mixed arrays, 5 GHz, Observer: R. A. Perley,
J. W. Dreher, and J. J. Cowan. (Perley, R.A., Bridle, A.H., Willis,
A.G. 1984, ApJSupp, 54, 291)
..................... Optical + Radio ...................
.........................................................
