Theoretical reevaluations of the black hole mass - bulge mass relation - I. Effect of the seed black hole mass

Understand

We explore the effect of varying the mass of the seed black hole on the resulting black hole mass - bulge mass relation at z ~ 0, using a semi-analytic model of galaxy formation combined with large cosmological N-body simulations.

• We constrain our model by requiring the observed properties of galaxies at z ~ 0 are reproduced.
• In keeping with previous semi-analytic models, we place a seed black hole immediately after a galaxy forms.
• When the mass of the seed is set at 10^5 M_sun, we find that the model results become inconsistent with recent observational results of the black hole mass - bulge mass relation for dwarf galaxies.