Share Email Print

Proceedings Paper

AO observations of three powerful radio galaxies
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

The host galaxies of powerful radio sources are ideal laboratories to study active galactic nuclei (AGN). The galaxies themselves are among the most massive systems in the universe, and are believed to harbor supermassive black holes (SMBH). If large galaxies are formed in a hierarchical way by multiple merger events, radio galaxies at low redshift represent the end-products of this process. However, it is not clear why some of these massive ellipticals have associated radio emission, while others do not. Both are thought to contain SMBHs, with masses proportional to the total luminous mass in the bulge. It either implies every SMBH has recurrent radio-loud phases, and the radio-quiet galaxies happen to be in the "low" state, or that the radio galaxy nuclei are physically different from radio-quiet ones, i.e. by having a more massive SMBH for a given bulge mass. Here we present the first results from our adaptive optics imaging and spectroscopy pilot program on three nearby powerful radio galaxies. Initiating a larger, more systematic AO survey of radio galaxies (preferentially with Laser Guide Star equipped AO systems) has the potential of furthering our understanding of the physical properties of radio sources, their triggering, and their subsequent evolution.

Paper Details

Date Published: 13 February 2003
PDF: 9 pages
Proc. SPIE 4834, Discoveries and Research Prospects from 6- to 10-Meter-Class Telescopes II, (13 February 2003); doi: 10.1117/12.457006
Show Author Affiliations
Willem H. de Vries, Lawrence Livermore National Lab. (United States)
Willem JM van Breugel, Lawrence Livermore National Lab. (United States)
Andreas Quirrenbach, Univ. of California/San Diego (United States)

Published in SPIE Proceedings Vol. 4834:
Discoveries and Research Prospects from 6- to 10-Meter-Class Telescopes II
Puragra Guhathakurta, Editor(s)

© SPIE. Terms of Use
Back to Top