Universität zu Köln

Hernandez-Garcia, L., Panessa, F., Bassani, L., Bruni, G., Ursini, F., Chavushyan, V., Gonzalez-Martin, O., Cazzoli, S., Jimenez-Andrade, E. F., Arevalo, P., Diaz, Y., Bazzano, A. and Ubertini, P. (2019). A young and obscured AGN embedded in the giant radio galaxy Mrk 1498. Mon. Not. Roy. Astron. Soc., 489 (3). S. 4049 - 4063. OXFORD: OXFORD UNIV PRESS. ISSN 1365-2966

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Abstract

Mrk 1498 is part of a sample of galaxies with extended emission-line regions (extended outwards up to a distance of similar to 7 kpc) suggested to be photoionized by an AGN that has faded away or that is still active but heavily absorbed. Interestingly, the nucleus of Mrk 1498 is at the centre of two giant radio lobes with a projected linear size of 1.1 Mpc. Our multiwavelength analysis reveals a complex nuclear structure, with a young radio source (Giga-hertz Peaked Spectrum) surrounded by a strong X-ray nuclear absorption, a mid-infrared spectrum that is dominated by the torus emission, plus a circumnuclear extended emission in the [O III] image (with radius of similar to 1 kpc), most likely related to the ionization of the AGN, aligned with the small- and large-scale radio jet and extended also at X-rays. In addition a large-scale extended emission (up to similar to 10 kpc) is only visible in [O III]. These data show conclusive evidence of a heavily absorbed nucleus and has recently restarted its nuclear activity. To explain its complexity, we propose that Mrk 1498 is the result of a merging event or secular processes, such as a minor interaction, that has triggered the nuclear activity and produced tidal streams. The large-scale extended emission that gives place to the actual morphology could either be explained by star formation or outflowing material from the AGN.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Hernandez-Garcia, L. UNSPECIFIED UNSPECIFIED UNSPECIFIED Panessa, F. UNSPECIFIED UNSPECIFIED UNSPECIFIED Bassani, L. UNSPECIFIED UNSPECIFIED UNSPECIFIED Bruni, G. UNSPECIFIED UNSPECIFIED UNSPECIFIED Ursini, F. UNSPECIFIED UNSPECIFIED UNSPECIFIED Chavushyan, V. UNSPECIFIED UNSPECIFIED UNSPECIFIED Gonzalez-Martin, O. UNSPECIFIED UNSPECIFIED UNSPECIFIED Cazzoli, S. UNSPECIFIED UNSPECIFIED UNSPECIFIED Jimenez-Andrade, E. F. UNSPECIFIED UNSPECIFIED UNSPECIFIED Arevalo, P. UNSPECIFIED UNSPECIFIED UNSPECIFIED Diaz, Y. UNSPECIFIED UNSPECIFIED UNSPECIFIED Bazzano, A. UNSPECIFIED UNSPECIFIED UNSPECIFIED Ubertini, P. UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-129944
DOI:	10.1093/mnras/stz2265
Journal or Publication Title:	Mon. Not. Roy. Astron. Soc.
Volume:	489
Number:	3
Page Range:	S. 4049 - 4063
Date:	2019
Publisher:	OXFORD UNIV PRESS
Place of Publication:	OXFORD
ISSN:	1365-2966
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language ACTIVE GALACTIC NUCLEI; COMPACT STEEP-SPECTRUM; INTEGRAL FIELD SPECTROSCOPY; X-RAY; XMM-NEWTON; OPTICAL SPECTROSCOPY; H-I; EMISSION; RESOLUTION; EVOLUTION Multiple languages Astronomy & Astrophysics Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/12994