Cosmic stellar mass density
= Cosmic stellar mass density
{title2=$\rho_*^{\rm com}=\int_0^\infty M_*n_*(M_*)\,dM_*$}
The <cosmic stellar mass density> is the mass moment of a <galaxy stellar mass function> in a stated volume convention. With a comoving mass function it is mass per <comoving volume>, while proper density is larger by $(1+z)^3$. Comparing it to a critical or matter density requires keeping the epoch and volume convention explicit.