| | |
| | |
Stat |
Members: 3645 Articles: 2'504'928 Articles rated: 2609
25 April 2024 |
|
| | | |
|
Article forum
| |
|
The local black-hole mass function from 2dFGRS radio galaxies | Elaine M. Sadler
; | Date: |
29 Apr 2003 | Subject: | astro-ph | Abstract: | 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. | Source: | arXiv, astro-ph/0304514 | Services: | Forum | Review | PDF | Favorites |
|
|
No message found in this article forum.
You have a question or message about this article?
Ask the community and write a message in the forum.
If you want to rate this article, please use the review section..
To add a message in the forum, you need to login or register first. (free): registration page
|
| |
|
|
|
| News, job offers and information for researchers and scientists:
| |