Infrared spectroscopy of high-redshift quasars.
Abstract
We present H and K spectra (showing redshifted Hα, Hβ and [O III] emission lines) of three radio-loud and three radio-quiet quasars with redshifts z >~ 2, which were obtained using CGS4 on UKIRT The [O III] λλ 4959 + 5007 lines are too weak to allow accurate determination of the redshift of the forbidden lines. The observed Balmer decrements are consistent with enhancement of Hα due to collisional excitation.
- Publication:
-
Monthly Notices of the Royal Astronomical Society
- Pub Date:
- October 1994
- DOI:
- 10.1093/mnras/270.3.575
- Bibcode:
- 1994MNRAS.270..575B