Modelling the host galaxies of binary compact object mergers with observational scaling relations

Understand

The merger rate density evolution of binary compact objects and the properties of their host galaxies carry crucial information to understand the sources of gravitational waves.

• Here, we present galaxyRate, a new code that estimates the merger rate density of binary compact objects and the properties of their host galaxies, based on observational scaling relations.
• We generate our synthetic galaxies according to the galaxy stellar mass function.
• We estimate the metallicity according to both the mass-metallicity relation (MZR) and the fundamental metallicity relation (FMR).