halomod.hod.Contreras13

class halomod.hod.Contreras13(central: bool = False, cosmo=FlatLambdaCDM(name='Planck15', H0=<Quantity 67.74 km / (Mpc s)>, Om0=0.3075, Tcmb0=<Quantity 2.7255 K>, Neff=3.046, m_nu=<Quantity [0., 0., 0.06] eV>, Ob0=0.0486), cm_relation: ~halomod.concentration.CMRelation | None = None, profile: ~halomod.profiles.Profile | None = None, mdef: ~hmf.halos.mass_definitions.MassDefinition | None = <hmf.halos.mass_definitions.SOMean object>, **model_parameters)[source]

Bases: HODPoisson

Nine-parameter model of Contreras (2013) [1].

Parameters:

  • M_min (float, default = 11.6222) – Minimum mass of halo that supports a central galaxy

  • M_1 (float, default = 12.851) – Mass of a halo which on average contains 1 satellite

  • alpha (float, default = 1.049) – Index of power law for satellite galaxies

  • sig_logm (float, default = 0.26) – Width of smoothed cutoff

  • M_0 (float, default = 11.5047) – Minimum mass of halo containing satellites

  • fca (float, default = 0.5) – fca

  • fcb (float, default = 0) – fcb

  • fs (float, default = 1) – fs

  • delta (float, default = 1) – delta

  • x (float, default = 1) – x

References

[1]

Contreras, C. et al., “The WiggleZ Dark Energy Survey: measuring the cosmicgrowth rate with the two-point galaxy correlation function”, https://ui.adsabs.harvard.edu/abs/2013MNRAS.430..924C.

central_condition_inherent = False
central_occupation(m)

The occupation function of the central component.

cs_pairs(m)

The average amount of the tracer coupled with itself in haloes of mass m, <T_c T_s>.

classmethod get_models() → Dict[str, Type]

Get a dictionary of all implemented models for this component.

property mmin

Defines a reasonable minimum mass to set for this HOD to converge when integrated.

nc(m)

Amplitude of central tracer per tracer source.

ns(m)

Amplitude of satellite tracer per tracer source.

satellite_occupation(m)

The occupation function of the satellite (or profile-dependent) component.

sharp_cut = False
sigma_central(m)

The standard deviation of the central tracer amount in haloes of mass m.

sigma_satellite(m)

The standard deviation of the satellite tracer amount in haloes of mass m.

ss_pairs(m)

The average amount of the tracer coupled with itself in haloes of mass m, <T_s T_s>.

total_occupation(m)

The total (average) occupation of the halo.

total_pair_function(m)

The total weight of the occupation paired with itself.

unit_conversion(cosmo, z)

A factor to convert the total occupation to a desired unit.