Astronomy and Astrophysics – Astrophysics
Scientific paper
2008-10-10
Astronomy and Astrophysics
Astrophysics
to appear in ApJ; 22 pages; 8 figures; original version available at http://www.astro.princeton.edu/~jgreene/paper.pdf
Scientific paper
10.1086/592078
We investigate the relationship between black hole mass and host galaxy properties for active galaxies with the lowest black hole masses currently known in galaxy nuclei. Hubble Space Telescope imaging confirms that the host galaxies have correspondingly low luminosity; they are ~1 mag below L*. In terms of morphology, ~60% of the members of the sample are disk-dominated, and all of these are consistent with containing a bulge or (more likely) pseudobulge, while the remainder are compact systems with no discernible disk component. In general the compact components of the galaxies do not obey the fundamental plane of giant elliptical galaxies and classical bulges, but rather are less centrally concentrated at a given luminosity, much like spheroidal galaxies. Our results strongly confirm that a classical bulge is not a requirement for a nuclear black hole. At the same time, the observed ratio of black hole to bulge mass is nearly an order of magnitude lower in this sample than that seen for classical bulges. While the M-sigma relation appears to continue to low mass, it seems that black hole-galaxy scaling relations do depend on galaxy structure.
Barth Aaron J.
Greene Jenny E.
Ho Luis C.
No associations
LandOfFree
Black Holes in Pseudobulges and Spheroidals: A Change in the Black Hole-Bulge Scaling Relations at Low Mass does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Black Holes in Pseudobulges and Spheroidals: A Change in the Black Hole-Bulge Scaling Relations at Low Mass, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Black Holes in Pseudobulges and Spheroidals: A Change in the Black Hole-Bulge Scaling Relations at Low Mass will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-448963