The extended line-emission from 3C 352.
Abstract
A study of the structure and kinematics of the extended emission line region (EELR) around 3C 352 with an imaging Fabry-Perot interferometer is presented. The EELR seen in the [O II] line extends over 12" and is aligned with the radio lobes. The continuum source is small without indication of such an alignment. Therefore, models based on excitation of the EELR by jet induced starbursts do not apply. Instead, the morphology and velocity structure can be explained in terms of cooling gas excited and accelerated by the bow shock associated with the jet. In the near neighbourhood there are several faint continuum objects which are possibly companions of 3C 352. One of them is associated with a large diffuse gas cloud, extending over an area of 100 kpc south-west of 3C 352. This cloud is blueshifted by ~500 km s^-1^ relative to the radio galaxy and has little variation in radial velocity. In addition to the companions, five probable cluster galaxies with strong [O II]λ 372.8 nm emission are detected in the field of 3C 352. The relative number of emission-line galaxies among the cluster galaxies up to R = 22.4^m^ is on the order of 40%.
- Publication:
-
Astronomy and Astrophysics
- Pub Date:
- October 1992
- Bibcode:
- 1992A&A...264..472H
- Keywords:
-
- Emission Spectra;
- Galactic Clusters;
- Line Spectra;
- Radio Galaxies;
- Data Reduction;
- Kinematic Equations;
- Astrophysics