Redshifts for flat-spectrum radio sources in the second Caltech-Jodrell Bank VLBI sample

被引：49

作者：

Henstock, DR ^{[1
]}

Browne, IWA ^{[1
]}

Wilkinson, PN ^{[1
]}

McMahon, RG ^{[1
]}

机构：

[1] UNIV CAMBRIDGE,INST ASTRON,CAMBRIDGE CB3 0HA,ENGLAND

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 1997年 / 290卷 / 02期

关键词：

BL Lacertae objects; general; galaxies; distances and redshifts; quasars; emission lines; radio continuum;

D O I：

10.1093/mnras/290.2.380

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present optical spectra and redshifts for flat-spectrum radio sources taken from the second Caltech-Jodrell Bank VLBI sample. The sources were observed using the Faint Object Spectrograph on the Isaac Newton Telescope. We show optical spectra for 90 sources, out of a total of 101 observed; of the remaining 11 sources, nine were not detected, and two were misidentified. Definite redshifts have been determined for 60 sources, and a further seven have probable redshifts determined. Five sources are shown to have featureless BL Lac type spectra, and 18 sources are too weak to give a reliable redshift.

引用

页码：380 / 400

页数：21

共 27 条

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