MBH-σ relation in Sloan Digital Sky Survey flat-spectrum radio quasars
Abstract
The relationship between the black hole mass and velocity dispersion indicated with [OIII] linewidth is investigated for a sample of 87 flat-spectrum radio quasars selected from the Sloan Digital Sky Survey Data Release 3 quasar catalogue. We found that the MBH-σ[OIII] relation is different from the Tremaine et al. relation for nearby inactive galaxies, with a larger black hole mass at given velocity dispersion. There is no strong evidence of cosmology evolution in the MBH-σ[OIII] relation up to z ~ 0.8. A significant correlation between the [OIII] luminosity and broad-line region (BLR) luminosity is found. When transferring the [OIII] luminosity to narrow-line region (NLR) luminosity, the BLR luminosity is, on average, larger than the NLR one by about one order of magnitude. We found a strong correlation between the synchrotron peak luminosity and NLR luminosity, which implies a tight relation between the jet physics and accretion process.
- Publication:
-
Monthly Notices of the Royal Astronomical Society
- Pub Date:
- August 2009
- DOI:
- 10.1111/j.1365-2966.2009.15059.x
- arXiv:
- arXiv:0905.2525
- Bibcode:
- 2009MNRAS.397.1705G
- Keywords:
-
- black hole physics;
- galaxies: active;
- galaxies: nuclei;
- quasars: emission lines;
- quasars: general;
- Astrophysics - Astrophysics of Galaxies
- E-Print:
- 6 pages, 4 figures, accepted to MNRAS