Clean optical spectrum of the radio jet of 3C 120

Details Clean optical spectrum of the radio jet of 3C 120 Clean optical spectrum of the radio jet of 3C 120

2004-07-07

arxiv.org/abs/astro-ph/0407128v1

Astrophys.J. 615 (2004) 156-160

Astronomy and Astrophysics

Astrophysics

13 pages, 3 figures, accepted for publishing in ApJ

Scientific paper

10.1086/423990

We present integral field spectroscopy (IFS) of the central region of 3C 120. We have modeled the nuclear and host galaxy 3D spectra using techniques normally applied to imaging, decoupling both components, and obtained a residual datacube. Using this residual datacube, we detected the extended emission line region associated with the radio jet. We obtained, for the first time, a clean spectrum of this region and found compelling evidences of a jet-cloud interaction. The jet compresses and splits the gas cloud which is ionized by the AGN and/or by the strong local UV photon field generated by a shock process. We cannot confirm the detection of an extended emission line region associated with the counter-jet reported by Axon (1989).

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