## Description Add a function that returns the amplitude of the Schechter function for active galaxies based on equation (17) in de la Bella et al. 2021. ## Inputs - Active Schechter parameters - Fraction of satellite galaxies ## Outputs - Amplitude of the Schechter function for active galaxies ## References * de la Bella et al. 2021, Quenching and Galaxy Demographics, [arXiv 2112.11110](https://arxiv.org/pdf/2112.11110.pdf).