The AGN Ionization Cones of NGC 5728 : II – Kinematics. (arXiv:1811.04513v1 [astro-ph.GA])
<a href="http://arxiv.org/find/astro-ph/1/au:+Durre_M/0/1/0/all/0/1">Mark Durré</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Mould_J/0/1/0/all/0/1">Jeremy Mould</a>
We explore the gas morphology and excitation mechanisms of the ionization
cones of the Type II Seyfert galaxy NGC~5728. Kinematics derived from near-IR
and optical data from the SINFONI and MUSE IFUs on the VLT reveal AGN-driven
outflows powered by a super-massive black hole (SMBH) of mass 3.4$times$10$^2$
M$_odot$, bolometric luminosity of 1.46$times$10$^{44}$ erg/s, Eddington
ratio 3.3$times$10$^{-2}$ and an accretion rate of 2.7$times$10$^2$
M$_odot$/yr. The symmetric bicone outflows show rapid acceleration to $pm$250
km/s at $sim$250 pc, then decelerating to $sim$130 km/s at 500 pc from the
AGN, with an estimated mass outflow rate of 38 M$_odot$/yr, the mass ratio of
outflows to accretion is 1415. The kinetic power is 1.5$times$10$^{42}$ erg/s,
1$%$ of the bolometric luminosity. Over the AGN active lifetime of
$sim$10$^7$ years, 1.6$times$10$^8$ M$_odot$ of gas can become
gravitationally unbound from the galaxy, a large proportion of the gas mass
available for star formation in the nuclear region. The bicone internal opening
angle (50deg.2) and the inclination to the LOS (47deg.6) were determined from
[Fe II] line profiles, the outflow axis is nearly parallel to the plane of the
galaxy. This geometry supports the Unified Model of AGN, as these angles
preclude seeing the accretion disk, which is obscured by the dusty torus.
We explore the gas morphology and excitation mechanisms of the ionization
cones of the Type II Seyfert galaxy NGC~5728. Kinematics derived from near-IR
and optical data from the SINFONI and MUSE IFUs on the VLT reveal AGN-driven
outflows powered by a super-massive black hole (SMBH) of mass 3.4$times$10$^2$
M$_odot$, bolometric luminosity of 1.46$times$10$^{44}$ erg/s, Eddington
ratio 3.3$times$10$^{-2}$ and an accretion rate of 2.7$times$10$^2$
M$_odot$/yr. The symmetric bicone outflows show rapid acceleration to $pm$250
km/s at $sim$250 pc, then decelerating to $sim$130 km/s at 500 pc from the
AGN, with an estimated mass outflow rate of 38 M$_odot$/yr, the mass ratio of
outflows to accretion is 1415. The kinetic power is 1.5$times$10$^{42}$ erg/s,
1$%$ of the bolometric luminosity. Over the AGN active lifetime of
$sim$10$^7$ years, 1.6$times$10$^8$ M$_odot$ of gas can become
gravitationally unbound from the galaxy, a large proportion of the gas mass
available for star formation in the nuclear region. The bicone internal opening
angle (50deg.2) and the inclination to the LOS (47deg.6) were determined from
[Fe II] line profiles, the outflow axis is nearly parallel to the plane of the
galaxy. This geometry supports the Unified Model of AGN, as these angles
preclude seeing the accretion disk, which is obscured by the dusty torus.
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