Stellar-to-halo mass ratio
= Stellar-to-halo mass ratio
{title2=$\epsilon_*=M_*/M_h=f_bf_*$}
The <stellar-to-halo mass ratio> compares a galaxy's <galactic stellar mass> with its host's total halo mass. In a simple baryon-conversion model it is $\epsilon_*=f_bf_*$. Observational comparisons must distinguish this total-mass ratio from the fraction of baryons converted, and must specify whether central, satellite or all stellar populations are included.