INFRARED-SPECTROSCOPY OF HIGH-REDSHIFT QUASARS

Authors
BAKER AC CARSWELL RF BAILEY JA ESPEY BR SMITH MG WARD MJ
Citation
Ac. Baker et al., INFRARED-SPECTROSCOPY OF HIGH-REDSHIFT QUASARS, Monthly Notices of the Royal Astronomical Society, 270(3), 1994, pp. 575-579
Citations number
17
Categorie Soggetti
Astronomy & Astrophysics
Journal title
Monthly Notices of the Royal Astronomical Society → ACNP
ISSN journal
00358711
Volume
270
Issue
3
Year of publication
1994
Pages
575 - 579
Database
ISI
SICI code
0035-8711(1994)270:3<575:IOHQ>2.0.ZU;2-V
Abstract
We present H and K spectra (showing redshifted H alpha, H beta and [O III] emission lines) of three radio-loud and three radio-quiet quasars with redshifts z greater than or similar to 2, which were obtained us ing CGS4 on UKIRT. The [O III] lambda lambda 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 H alpha due to collisional excitation.