Selected properties of galaxy, MBHs and MBHBs populations (Izquierdo-Villalba et al. 2022)

This is a catalogue of galaxies, massive black holes (MBHs) and massive black hole binaries (MBHBs) generated with L-Galaxies semi-analytical model in the version of Izquierdo-Villalba et al. 2022and the dark matter merger trees extracted from the Millennium simulation (Springel et al. 2005). The catalogue is created by making use of only 9 sub-volumes of the Millennium box (~2% of the wholesimulation, Volume = 5562144.30 Mpc3) and it contains galaxies, MBHs and MBHBs at51 different redshifts (0 < z < 12.5). This catalogue is suited for studying the populationof MBHBs and their hosts. The properties stored in this catalogue are the following:

Redshift: Redshift of the galaxy/MBH/MBHB
SnapNum: Snapnum of the simulation
Pos: Position of the galaxy/MBH/MBHB inside the comoving box. It is an array of dimension 3. [Mpc/h]
Vel: Velocity of the galaxy/MBH/MBHB inside the comoving box. It is an array of dimension 3. [km/s]
Mvir: Virial mass of the dark matter sub-halo [1e10 Msun/h]
Rvir: Virial radius of the dark matter sub-halo [Mpc/h]
Vvir: Virial velocity of the dark matter sub-halo [km/s]
Vmax: Maximum circular velocity of the dark matter halo [km/s]
HotRadius: Radius of the hot gas atmosphere that surrounds the galaxy [1e10 Msun/h]
ColdGas: Cold gas component of the galaxy [1e10 Msun/h]
BulgeMass: Stellar mass of the bulge component [1e10 Msun/h]
DiskMass: Stellar mass of the disc component [1e10 Msun/h]. The total stellar mass of the galaxy should be BulgeMass+DiskMass
HotGas: Hot gas component of the galaxy [1e10 Msun/h]
BlackHoleMass: Mass of the primary MBH of the galaxy [1e10 Msun/h]
Lbol: Bolometric luminosity of the primary MBH of the galaxy [1e40 erg/s]
fEDD: Ratio between the Lbol of the primary and the Eddington luminosity (<=1) [No dimensions]
spin: Spin of the primary MBH [0,1]
M_dot_acc: Accretion rate of the primary MBH of the galaxy [Msun/yr]
BlackHoleMassSec: Mass of the secondary MBH (if exists) of the galaxy [1e10 Msun/h]
LbolSec: Bolometric luminosity of the secondary MBH (if exists) of the galaxy [1e40 erg/s]
fEDDSec: Ratio between the Lbol of the secondary MBH (if exists) and the Eddington luminosity (<=1) [No dimensions]
spinSec: Spin of the primary MBH (if exists) [0,1]
M_dot_acc_sec: Accretion rate of the secondary MBH (if exists) of the galaxy [Msun/yr]
BinarySemiMajorAxis: Semi-major axis of the MBHB [Mpc/h]
BinaryEccentricity: Eccentricity of the MBHB
Sfr: Star formation rate of the galaxy [Msun/yr]
BulgeSize: Size of the bulge stellar component [Mpc/h]
StellarDiskRadius: Scale length of the disc stellar component [Mpc/h]
GasDiskRadius: Scale length of the disc gas component [Mpc/h]

The file can be read as follows:

import h5py
hf = h5py.File('LGal_IzquierdoVillalba2022_SubVol_0_9.h5', 'r')