UBVR photometry of the ring galaxy VII Zw 466.
Abstract
Detailed UB VR photometry has been obtained for the ring galaxy VII Zw 466 and its companions. The bright knots located along the rim of the ring are all very blue. One knot inside the ring is much redder than the others, and it is the only bright component of the ring which appears to be dominated by light from an old stellar component. For the seemingly "empty" region within the ring we find a detectable signal with a surface-brightness m = 24 mag arcsec-2 and peculiar colors. Just exterior to the ring the surface brightness drops drastically to zero. The ring seems to have been formed in the aftermath of a collision. The "blue disk" companion of the ring was one of the two galaxies involved, and the red interior knot was the nucleus of the other. Subject headings: galaxies: individual - galaxies: photometry - galaxies: stellar content - galaxies: structure
- Publication:
-
The Astrophysical Journal
- Pub Date:
- September 1978
- DOI:
- 10.1086/156427
- Bibcode:
- 1978ApJ...224..796T
- Keywords:
-
- Astronomical Photometry;
- Galactic Structure;
- Ring Galaxies;
- Ubv Spectra;
- Astronomical Models;
- Astronomical Photography;
- Collisions;
- Electrophotometers;
- Galactic Evolution;
- Radiant Flux Density;
- Astronomy;
- Photometry:Ring Galaxies;
- Ring Galaxies:Stellar Content