EIS-NVSS射电源联合巡天（CENSORS）III：光谱观测
A Combined EIS-NVSS Survey Of Radio Sources (CENSORS) III: Spectroscopic observations
摘要：
EIS-NVSS射电源联合巡天（英语：Combined EIS-NVSS Survey Of Radio Sources，缩写：CENSORS）是从NRAO VLA巡天（NVSS）中选出的一个1.4GHz射电巡天，其通量密度为7.2mJy。它的目标是ESO成像调查（EIS）Patch D，这是一个以09 51 36.0，-21 00 00（J2000）为中心的3 × 2平方度的区域。本文介绍了150个CENSORS源中143个的光谱观测结果。这些观测的主要动机是实现足够的光谱完整性，以便样品可以用于研究射电源的演变。观测结果表明，63%的样品有可靠的光谱红移，另外8%的样品可能有红移（例如，基于单一发射线）。在CENSORS样本中识别出类星体和恒星形成星系之后，通过射电星系的K-z关系计算了样本其余部分的估计红移。CENSORS射电源的红移分布的分布预测的Dunlop和Peacock 1990年的各种无线电光度函数演化模型的比较，结果没有很好的匹配。这表明该示例可用于扩展该领域以前的工作。
英文摘要：
The Combined EIS-NVSS Survey Of Radio Sources (CENSORS) is a 1.4GHz radio survey selected from the NRAO VLA Sky Survey (NVSS) and complete to a flux-density of 7.2mJy. It targets the ESO Imaging Survey (EIS) Patch D, which is a 3 by 2 square degree field centred on 09 51 36.0, -21 00 00 (J2000). This paper presents the results of spectroscopic observations of 143 of the 150 CENSORS sources. The primary motivation for these observations is to achieve sufficient spectroscopic completeness so that the sample may be used to investigate the evolution of radio sources. The observations result in secure spectroscopic redshifts for 63% of the sample and likely redshifts (based on a single emission line, for example) for a further 8%. Following the identification of the quasars and star-forming galaxies in the CENSORS sample, estimated redshifts are calculated for the remainder of the sample via the K-z relation for radio galaxies. Comparison of the redshift distribution of the CENSORS radio sources to distributions predicted by the various radio luminosity function evolution models of Dunlop & Peacock 1990, results in no good match. This demonstrates that this sample can be used to expand upon previous work in that field.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
