Open AccessNear‐infrared spectroscopy of powerful compact steep‐spectrum radio sources
Author(s) -
Hirst Paul,
Jackson Neal,
Rawlings Steve
Publication year - 2003
Publication title -
monthly notices of the royal astronomical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.058
H-Index - 383
eISSN - 1365-2966
pISSN - 0035-8711
DOI - 10.1111/j.1365-2966.2003.07155.x
Subject(s) - physics , quasar , astrophysics , redshift , spectroscopy , luminosity , radio galaxy , galaxy , luminous infrared galaxy , line (geometry) , infrared , astronomy , ovv quasar , doubly ionized oxygen , spectral line , equivalent width , emission spectrum , geometry , mathematics
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 [O iii ]λ5007 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 3C 241, adding to recent evidence for broad lines in some radio galaxies.