The nature of the 3CR radio galaxies at z=1
| dc.creator | Best, P. N. | |
| dc.creator | Longair, M. S. | |
| dc.creator | R"ottgering, H. J. A. | |
| dc.date | 1997-11-03 | |
| dc.date.accessioned | 2026-07-07T02:24:54Z | |
| dc.date.available | 2026-07-07T02:24:54Z | |
| dc.description | We present evidence that the 3CR radio galaxies at redshift one are already very massive, highly dynamically evolved galaxies, which lie at the heart of (proto--)cluster environments. Since nearby 3CR double radio sources are generally found in more isolated surroundings, the galactic environments of these galaxies must change dramatically with redshift. Therefore, the original `uniform population, closed box' interpretation of the infrared K--magnitude vs redshift relationship no longer appears valid. We propose a new interpretation: the powerful radio galaxies selected at high and low redshift have different evolutionary histories, but must contain a similar mass of stars, a few times 10-to-the-power-11 solar masses, and so conspire to produce the `passively evolving' K-z relation observed. We discuss this model in the context of the current understanding of powerful radio sources and, in light of this new model, we compare the K-z relation of the 3CR galaxies with those derived for lower power radio galaxies and for brightest cluster galaxies. | |
| dc.description | 12 pages including 4 figures. LaTeX, using knawproc.cls. To appear in proceedings of `The most distant radio galaxies', Amsterdam, 15-17th October 1997 | |
| dc.identifier | https://arxiv.org/abs/astro-ph/9711010 | |
| dc.identifier | http://arxiv.org/abs/astro-ph/9711010 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/11733 | |
| dc.subject | Astrophysics | |
| dc.title | The nature of the 3CR radio galaxies at z=1 | |
| dc.type | text |