lfkit.luminosity_functions.models.schechter

Schechter luminosity function models.

This module provides standalone functions for evaluating Schechter based luminosity function models in rest frame absolute magnitude space.

Functions with names ending in _from_m are convenience wrappers that accept apparent magnitude values, convert them to absolute magnitude values, and then evaluate the corresponding Schechter model.

Implemented models:

• Standard Schechter luminosity function

• Evolving Schechter luminosity function

• Double Schechter luminosity function

• Cumulative standard and evolving Schechter number densities

Functions

double_schechter(absolute_mag, *, phi_star, ...)	Return a double-power law Schechter luminosity function in magnitude space.
double_schechter_from_m(cosmo_obj, z, ...[, ...])	Return a double-power law Schechter luminosity function from apparent magnitudes.
evolving_schechter(absolute_mag, z, *[, ...])	Return an evolving Schechter luminosity function in magnitude space.
evolving_schechter_from_m(cosmo_obj, z, ...)	Return an evolving Schechter luminosity function from apparent magnitudes.
modified_schechter(absolute_mag, *, ...)	Return a modified Schechter luminosity function in magnitude space.
multi_schechter(absolute_mag, *, phi_stars, ...)	Return a sum of Schechter luminosity function components.
schechter(absolute_mag, *, phi_star, m_star, ...)	Return the standard Schechter luminosity function in magnitude space.
schechter_cumulative(magnitude_limit, *, ...)	Return the cumulative number density for a standard Schechter LF.
schechter_cumulative_evolving(...[, ...])	Return the cumulative number density for an evolving Schechter LF.
schechter_from_m(cosmo_obj, z, apparent_mag, ...)	Return the standard Schechter luminosity function from apparent magnitudes.
truncated_schechter(absolute_mag, *, ...[, ...])	Return a Schechter luminosity function truncated outside magnitude limits.