Investigating the galaxy-halo connection of DESI Emission-Line Galaxies with SHAMe-SF

Understand

The Dark Energy Spectroscopic Instrument (DESI) survey is mapping the large-scale distribution of millions of Emission Line Galaxies (ELGs) over vast cosmic volumes to measure the growth history of the Universe.

• However, compared to Luminous Red Galaxies (LRGs), very little is known about the connection of ELGs with the underlying matter field.
• In this paper, we employ a novel theoretical model, SHAMe-SF, to infer the connection between ELGs and their host dark matter subhaloes.
• SHAMe-SF is a version of subhalo abundance matching that incorporates prescriptions for multiple processes, including star formation, tidal stripping, environmental correlations, and quenching.