The Black Hole- Bulge Relations in Active Galactic Nuclei

Details The Black Hole- Bulge Relations in Active Galactic Nuclei The Black Hole- Bulge Relations in Active Galactic Nuclei

2004-07-19

arxiv.org/abs/astro-ph/0407399v1

Astronomy and Astrophysics

Astrophysics

5 pages, 4 figures, Proc. of IAU Symp. 222, Black Holes, Stars and ISM in Galactic Nuclei

Scientific paper

10.1017/S1743921304001474

We show that Massive Black Holes of AGNs follow the same approximately linear relation with the luminosity of the host spheroid (bulge) found in normal (quiescent) galaxies, with the black hole mass being ~0.002 that of the bulge. We also demonstrate that Narrow line AGNs seem to have a significantly lower Mbh/Lbulge ratio, which implies a new strong correlation between Mbh/Lbulge and the width of the broad emission lines of AGNs. Combining existing data, new observations and extrapolation schemes based on the Faber-Jackson relation, the relation between the BH mass and the stellar velocity dispersion in the host bulge of AGNs is constructed. It too agrees with the relation found in quiescent galaxies.

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