SIMBAD references

2017A&A...603A..32C - Astronomy and Astrophysics, volume 603A, 32-32 (2017/7-1)

Kiloparsec-scale emission in the narrow-line Seyfert 1 galaxy Mrk 783.

CONGIU E., BERTON M., GIROLETTI M., ANTONUCCI R., CACCIANIGA A., KHARB P., LISTER M.L., FOSCHINI L., CIROI S., CRACCO V., FREZZATO M., JARVELA E., LA MURA G., RICHARDS J.L. and RAFANELLI P.

Abstract (from CDS):

We present the first results of a radio survey of 79 narrow-line Seyfert 1 (NLS1) carried out with the Karl G. Jansky Very Large Array (JVLA) at 5GHz in A configuration aimed at studying the radio properties of these sources. We report the detection of extended emission in one object: Mrk 783. This is intriguing, since the radio-loudness parameter R of this object is close to the threshold between radio-quiet and radio-loud active galactic nuclei (AGN). The galaxy is one of the few NLS1 showing such an extended emission at z<0.1. The radio emission is divided into a compact core component and an extended component, observed on both sides of the nucleus and extending from 14kpc southeast to 12kpc northwest. There is no sign of a collimated jet and the shape of the extended component is similar to those of some Seyfert galaxies. The properties of the emission are compatible with a relic produced by the intermittent activity cycle of the AGN.

Abstract Copyright: © ESO, 2017

Journal keyword(s): galaxies: Seyfert - galaxies: jets - radio continuum: galaxies - radio continuum: galaxies

Simbad objects: 6

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2020.09.18-11:03:01

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