Ionized-gas Kinematics Along the Large-scale Radio Jets in Type-2 AGNs
Abstract
To investigate the connection between radioactivity and active galactic nucleus (AGN) outflows, we present a study of ionized-gas kinematics based on an [O III] λ5007 emission line along the large-scale radio jet for six radio AGNs. These AGNs are selected based on the radioactivity (i.e., {L}1.4{GHz}≥slant {10}39.8 {erg} {{{s}}}-1) as well as optical emission-line properties as type-2 AGNs. Using the Red Channel Cross Dispersed Echellette Spectrograph at the Multiple Mirror Telescope, we investigate in detail the [[O III]] and stellar kinematics. We spatially resolve and probe the central AGN-photoionization sizes, which is important in understanding the structures and evolutions of galaxies. We find that the typical central AGN-photoionization radius of our targets are in range of 0.9-1.6 kpc, consistent with the size-luminosity relation of [O III] in previous studies. We investigate the [O III] kinematics along the large-scale radio jets to test whether there is a link between gas outflows in the narrow-line region and extended radio-jet emissions. Contrary to our expectation, we find no evidence that the gas outflows are directly connected to the large-scale radio jets.
- Publication:
-
The Astrophysical Journal
- Pub Date:
- December 2017
- DOI:
- 10.3847/1538-4357/aa9656
- arXiv:
- arXiv:1710.08565
- Bibcode:
- 2017ApJ...851....8L
- Keywords:
-
- galaxies: active;
- galaxies: kinematics and dynamics;
- ISM: jets and outflows;
- quasars: emission lines;
- Astrophysics - Astrophysics of Galaxies
- E-Print:
- 10 pages, 8 figures, accepted in ApJ