| Full text | |
| Author(s): |
da Silva, Patricia
;
Menezes, R. B.
;
Diaz, Y.
;
Rodriguez-Ardila, A.
;
Lopez-Navas, E.
;
Arevalo, P.
;
Hernandez-Garcia, L.
Total Authors: 7
|
| Document type: | Journal article |
| Source: | Monthly Notices of the Royal Astronomical Society; v. 519, n. 1, p. 20-pg., 2022-12-16. |
| 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 alpha and H beta emission lines, characterising a type 1 AGN, with a spectrum rich in coronal emission lines. The spatial morphology of the [O iii] lambda 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] lambda 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. (AU) | |
| FAPESP's process: | 11/51680-6 - Exploring the universe: from the galaxies formation to Earth-like planets with the Giant Magellan Telescope |
| Grantee: | Laerte Sodré Junior |
| Support Opportunities: | Special Projects |
| FAPESP's process: | 20/13315-3 - Study of the galactic nuclei of the milky way morphological twins and SAbcs of the DIVING3D survey |
| Grantee: | Patricia da Silva |
| Support Opportunities: | Scholarships in Brazil - Post-Doctoral |