Cosmology W13 - Physics Department, UCSB

Luminosity func^on
• Depends on band
• Type of galaxy (in this case Loveday et al.
2011 blue and red galaxies)
• Evolves with redship (see next slide)
• Usually described as a powerlaw +
exponen^al cutoff known as Schechter
func^on
(M) =0.4ln 10 0.4(M M) 1+
exp 10
0.4(M M)