Near-infrared spectroscopy of powerful compact steep-spectrum radio sources
arXiv:astro-ph/0309055 · doi:10.1111/j.1365-2966.2003.07155.x
Abstract
We have obtained near-infrared spectroscopy of a small sample of powerful Compact Steep-Spectrum (CSS) radio sources mainly, but not exclusively, from the 3CR sample. We find no differences between the distributions in the equivalent width and luminosity of the [OIII] 5007A line for our sample and other larger, presumably older, high-redshift 3C objects, suggesting that the underlying quasar luminosity remains roughly constant as quasars age. We also find a possible broad line in 3C241, adding to recent evidence for broad lines in some radio galaxies.
Accepted by MNRAS