Linear bias forecasts for emission line cosmological surveys

Understand

We forecast the linear bias for H${\rm \alpha}$-emitting galaxies at high redshift.

• To simulate a Euclid-like and a WFIRST-like survey, we place galaxies into a large-volume dark matter halo lightcone by sampling a library of luminosity-dependent halo occupation distributions (HODs), which is constructed using a physically motivated galaxy formation model.
• We calibrate the dust attenuation in the lightcones such that they are able to reproduce the H{\alpha} luminosity function or the H{\alpha} cumulative number counts.
• The angle-averaged galaxy correlation function is computed for each survey in redshift slices of width $\Delta z = 0.2$.