The local black-hole mass function from 2dFGRS radio galaxies
| dc.creator | Sadler, Elaine M. | |
| dc.date | 2003-04-29 | |
| dc.date.accessioned | 2026-07-07T02:08:21Z | |
| dc.date.available | 2026-07-07T02:08:21Z | |
| dc.description | Radio emission from early-type (E and S0) galaxies usually signals the presence of a central supermassive black hole. If radio luminosity and black-hole mass are correlated, then we can use the large sample of radio galaxies observed in the 2dF Galaxy Redshift Survey (2dFGRS) to estimate the local (z<0.1) black-hole mass function for early-type galaxies. Integrating over this mass function yields a local black-hole mass density of Rho_BH = 1.8 (+0.4, -0.6) x 10^5 solar mases/Mpc^3 (for Ho = 50 km/s/Mpc), in good agreement both with the local value derived from galaxy velocity dispersions and with the high-redshift value derived from QSOs. This supports earlier suggestions that local radio galaxies are the direct descendants of most or all of the high-redshift QSOs. | |
| dc.description | 6 pages, 3 figures. Published in Carnegie Observatories Astrophysics Series, Vol. 1: "Coevolution of Black Holes and Galaxies," ed. L.C. Ho (Pasadena: Carnegie Observatories, http://www.ociw.edu/ociw/symposia/series/symposium1/proceedings.html) | |
| dc.identifier | https://arxiv.org/abs/astro-ph/0304514 | |
| dc.identifier | http://arxiv.org/abs/astro-ph/0304514 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/6012 | |
| dc.subject | Astrophysics | |
| dc.title | The local black-hole mass function from 2dFGRS radio galaxies | |
| dc.type | text |