Table 1: Model parameters and their meaning.
Large scale Disk
R galactic radius
v $_{\rm rot}$ rotation velocity
$\Omega$ angular velocity
M $_{\rm dyn}$ total enclosed (dynamical) mass
M $_{\rm gas}$ total gas mass
v $_{\rm turb}$ gas turbulent velocity dispersion
Q Toomre parameter
$\rho$ midplane density
$\Sigma$ surface density
H disk height
$\dot{M}$ disk mass accretion rate
$\nu$ viscosity
l $_{\rm driv}$ turbulent driving length scale
$\delta$ scaling parameter between driving
  scale length and cloud size
$\Phi_{\rm V}$ cloud volume filling factor
$\zeta$ viscosity scaling parameter
t $_{\rm ff}^{\rm H}$ disk vertical free fall time
$\dot{\rho}_*$ star formation rate per unit volume
$\dot{\Sigma}_*$ star formation rate per unit surface
$\dot{M}_*$ star formation rate
$\xi$ conversion factor for SN energy flux
$\eta$ star formation efficiency in the
  collisional model
$\gamma$ linking factor between M $_{\rm gas}$ and $\dot{\rm M}$
  for torus evolution
$\vartheta$ disk transparency
$\dot{M}_{\rm BH}$ mass accretion rate onto the black hole
$\dot{M}_{\rm wind}$ wind outflow rate
J$_{\rm UV}$  AGN UV radiation field
Small scale Clouds
t $_{\rm coll}$ timescale for cloud-cloud collisions
l $_{\rm coll}$ cloud mean free path
M$_{\rm cl}$ cloud mass
r$_{\rm cl}$ cloud radius
N$_{\rm cl}$ cloud surface density
c$_{\rm s}$ local sound speed within the clouds
t$_{\rm s}$ sound crossing time of clouds
t $_{\rm ff}^{\rm cl}$ cloud free fall time
T temperature
c$_{\rm i}$ sound crossing time of the ionized gas

Source LaTeX | All tables | In the text