The origin of the relationship between black hole mass and host galaxy bulge luminosity

Details The origin of the relationship between black hole mass and host galaxy bulge luminosity The origin of the relationship between black hole mass and host galaxy bulge luminosity

2010-04-07

arxiv.org/abs/1004.1180v1

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

In press in "The First Stars and Galaxies: Challenges for the Next Decade", America Institute of Physics Conf. Proc., eds. D.

Scientific paper

There is a strong decrease in scatter in the black hole mass versus bulge luminosity relationship with increasing luminosity and very little scatter for the most luminous galaxies. It is shown that this is a natural consequence of the substantial initial dispersion in the ratio of black hole mass to total stellar mass and of subsequent galaxy growth through hierarchical mergers. "Fine-tuning" through feedback between black hole growth and bulge growth is neither necessary nor desirable.

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