Actas de congresos
The architecture of the active galactic nucleus of NGC 1068
Fecha
2013Registro en:
Latin American Regional IAU Meeting, 14, 2013, Florianópolis.
0185-1101
Autor
Nicolazzi, Daniel May
Steiner, Joao Evangelista
Reiff, Rodrigo Bezerra de Menezes
Ricci, Tiago Vecchi
Institución
Resumen
NGC 1068 is the brightest and most studied AGN
in the sky. Its study motivated the development of
the Unified Model for AGN as the prototype of an
obscured Seyfert 1 galaxy. The opportunity of studying
such object, with IFU spectrographs in the near
infrared, allow us to understand the details of how
gas is being fed to the central black hole and how
the gas is being ionized and ejected from the center.
We re-analyzed data taken from the SINFONI
(VLT) and NIFS (GEMINI North) public archives,
in the HK bands with spatial resolution of 0,1 arcsec
(1,7 pc/spaxel). We concentrated our analysis
on the molecular H2 lines, the low ionization line [Fe
II] and the high ionization line [Si VI]. The analysis
shows very distinct behavior for the different lines.
In particular we found a clear structure resembling
a “glowing-hourglass” shape for the low velocity [Fe
II] emission, while the high velocity emission fills
the “hourglass”. The shape of this image suggests
that the dusty torus and the ionization axis, possibly
associated to the central accretion disk, are not
co-planar. The primary wind is probably originated
from this asymmetry while the secondary wind is
likely to be originated from an H2 emitting cloud, about 1” to the north of the AGN, impacted by the primary wind and ionized by the central source.