Halo occupation distribution

The Halo occupation distribution is a concept from astrophysics and cosmology, particularly related to the study of dark matter and the formation of galaxies within large-scale structures in the universe. It describes how dark matter halos, which are regions of space dominated by dark matter, host galaxies and other structures. In the context of galaxy formation, a dark matter halo is believed to contain a certain number of baryonic (normal) matter components, such as stars, gas, and dust.