The nuclear radio sources in the elliptical galaxies NGC 3309 and NGC 3311 in the cluster Abell 1060.
Abstract
VLA observations in the 6-cm continuum of the Abell 1060 cluster of galaxies have revealed a radio jet in one of the dominant central elliptical galaxies, NGC 3309. The total flux density is 4.8 mJy and the total minimum equipartition energy is 5 x 10 to the 53rd erg. A weak radio source, with a total 6-cm flux density of 0.3 mJy, has barely been detected in the other dominant central cD galaxy, NGC 3311. Optical observations of NGC 3309 and NGC 3311 have also been obtained using the ESO 3.6-m and the Danish 1.5-m telescopes on La Silla. The NGC 3309 jet has a position angle of 26 deg as compared with the 48-deg position angle of the galaxy's optical major axis. The jet is two-sided and its northeastern part ends in a spur, well within the optical galaxy, which bends towards the galaxy's minor axis. The southwestern part ends in a lobe which has a minimum energy density similar to the pressure of the cluster core gas, as obtained from X-ray observations.
- Publication:
-
Astronomy and Astrophysics
- Pub Date:
- March 1985
- Bibcode:
- 1985A&A...144..496L
- Keywords:
-
- Elliptical Galaxies;
- Galactic Clusters;
- Radio Galaxies;
- Radio Sources (Astronomy);
- Astronomical Maps;
- Centimeter Waves;
- Galactic Structure;
- Astrophysics