Double-Peaked Emission Lines due to A Radio Outflow in KISSR1219

Abstract

We present the results from 1.5 and 5 GHz phase-referenced VLBA and 1.5 GHz Karl G. Jansky Very Large Array (VLA) observations of the Seyfert 2 galaxy KISSR1219, which exhibits double peaked emission lines in its optical spectrum. The VLA and VLBA data reveal a one-sided core-jet structure at roughly the same position angles, providing evidence of an AGN outflow. The absence of dual parsec-scale radio cores puts the binary black hole picture in doubt for the case of KISSR1219. The high brightness temperatures of the parsec-scale core and jet components ($>10^6$ K) are consistent with this interpretation. Doppler boosting with jet speeds of $\gtrsim 0.55c$ to $\gtrsim 0.25c$, going from parsec- to kpc-scales, at a jet inclination $\gtrsim 50^{\circ }$ can explain the jet one-sidedness in this Seyfert 2 galaxy. A blue-shifted broad emission line component in [O {\sc iii}] is also indicative of an outflow in the emission line gas at a velocity of $\sim 350$ km s${}^{-1}$, while the [O {\sc i}] doublet lines suggest the presence of shock-heated gas. A detailed line ratio study using the MAPPINGS III code further suggests that a shock+precursor model can explain the line ionization data well. Overall, our data suggest that the radio outflow in KISSR1219 is pushing the emission line clouds, both ahead of the jet and in a lateral direction, giving rise to the double peak emission line spectra.

15 pages, 7 figures, ApJ accepted

References in corpus (7)

• The MAPPINGS III Library of Fast Radiative Shock Models
• Evolutionary Stellar Population Synthesis with MILES. Part I: The Base Models and a New Line Index System
• VLBI Images of 49 Radio Supernovae in Arp 220
• A close-pair binary in a distant triple supermassive black-hole system
• Evidence of parsec-scale jets in Low-luminosity Active Galactic Nuclei
• VLBA Observations of Mrk 6: Probing the Jet-Lobe Connection
• VLBI Imaging of the Double Peaked Emission Line Seyfert KISSR1494

Cited by in corpus (15)

• The Quasar Feedback Survey: Discovering hidden Radio-AGN and their connection to the host galaxy ionised gas
• Searching for Dual AGN in Galaxies with Double-Peaked Emission Line Spectra using Radio Observations
• Black hole triggered star formation in the dwarf galaxy Henize 2-10
• The Lunar Gravitational-wave Antenna: Mission Studies and Science Case
• A Curved 150 Parsec Long Jet in the Double-Peaked Emission-Line AGN KISSR 434
• LeMMINGs. III. The e-MERLIN Legacy Survey of the Palomar sample. Exploring the origin of nuclear radio emission in active and inactive galaxies through the [O III] -- radio connection
• Looking for Signatures of AGN Feedback in Radio-Quiet AGN
• Gemini IFU, VLA and HST observations of the OH Megamaser galaxy IRASF23199+0123: the hidden monster and its outflow
• Automated Detection of Double Nuclei Galaxies using GOTHIC and the Discovery of a Large Sample of Dual AGN
• The OH Megamaser galaxy IRAS11506-3851: an AGN and starformation revealed by multiwavelength observations
• The Intriguing Parsec-Scale Radio Structure in the "Offset AGN" KISSR 102
• Multi-wavelength observations of the triple-peaked AGN Mrk 622
• Unravelling the nature of the dual AGN in the galaxy pair system IRAS 05589+2828 and 2MASX J06021107+2828382
• High-Resolution Radio Observations of Five Optically Selected Type 2 Quasars
• The Nature of Jets in Double-Peaked Emission Line AGN in the KISSR Sample