A closer look at NGC 7314 nuclear region: a multiwavelength analysis of the Seyfert nucleus and its surroundings

da Silva; P.; Menezes; R.B.; Diaz; Y.; Rodríguez-Ardila; A.; López-Navas; E.; Arèvalo; P.; Hernández-García; L.

Keywords: galaxies: active; galaxies: individual: NGC 7314; galaxies: kinematics and dynamics; galaxies:nuclei

Abstract

The central regions of galaxies harbouring active galactic nuclei (AGNs) can be quite complex, especially at high activity, presenting, besides variability, a variety of phenomena related, e.g. to ionization/excitation mechanisms. A detailed study is necessary in order to understand better those objects. For that reason, we performed a multiwavelength analysis of the nuclear region of the nearby Seyfert galaxy NGC 7314, using an optical data cube obtained with the Integral Field Unit from the Gemini Multi-Object Spectrograph, together with Hubble Space Telescope images, X-ray data from the XMM-Newton and the Nuclear Spectroscopic Telescope Array and radio data from Atacama Large Millimeter/Submillimeter Array. The goals were to study the nuclear and circumnuclear emission, the emission of the AGN and the gas kinematics. The optical spectrum shows the emission of a Seyfert nucleus, with broad components in the H ? and H ? emission lines, characterising a type 1 AGN, with a spectrum rich in coronal emission lines. The spatial morphology of the [O iii] ?5007 suggests the presence of an ionization cone, west of the nucleus, meanwhile the east cone seems to be obscured by dust. An extended [Fe vii] ?6087 emission was also detected, which could be possibly explained by a scenario involving photoionization + shocks mechanisms. X-rays analyses showed that there are variations in the flux; however, we did not detect any variations in the column density along the line of sight. Its variability may be a consequence of changes in the AGN accretion rate. © 2022 The Author(s) Published by Oxford University Press on behalf of Royal Astronomical Society.

Más información

Título según WOS: A closer look at NGC 7314 nuclear region: a multiwavelength analysis of the Seyfert nucleus and its surroundings
Título según SCOPUS: A closer look at NGC 7314 nuclear region: a multiwavelength analysis of the Seyfert nucleus and its surroundings
Título de la Revista: Monthly Notices of the Royal Astronomical Society
Volumen: 519
Número: 1
Editorial: Oxford University Press
Fecha de publicación: 2023
Página de inicio: 1293
Página final: 1312
Idioma: English
DOI:

10.1093/mnras/stac3454

Notas: ISI, SCOPUS