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., L1.4 GHz ≥1039.8 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.
Bibliographical noteFunding Information:
We thank the anonymous referee for various suggestions, which improved the clarity of the paper. This work was supported by the National Research Foundation of Korea grant funded by the Korea government (No. 2017R1A5A1070354 and No. 2016R1A2B3011457). This work was supported by K-GMT Science Program (PID: (MMT-2015A-005)) funded through Korean GMT Project operated by Korea Astronomy and Space Science Institute (KASI).
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All Science Journal Classification (ASJC) codes
- Astronomy and Astrophysics
- Space and Planetary Science