The Canada-France Redshift Survey. III. ``Single Emission-Line'' Objects, Analysis of Repeat Observations, and Spectroscopic Identifications in the 1415+52 and 2215+00 Fields
The Canada-France Redshift Survey. III. ``Single Emission-Line'' Objects, Analysis of Repeat Observations, and Spectroscopic Identifications in the 1415+52 and 2215+00 Fields
复制标题
加拿大-法国红移调查。
DOI：
10.1086/176557
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发表时间：
1995
期刊：
影响因子：
--
通讯作者：
D. Crampton
中科院分区：
文献类型：
--
作者：
S. Lilly;F. Hammer;O. Fèvre;D. Crampton
本文是描述加拿大-法国红移调查 (CFRS) 的系列文章之一。显示了如何使用发射线周围的连续谱的形状来区分 z > 0.76 处的 [OII] 3727 和光谱中低红移处的 H$\alpha$（仅一条孤立的发射线可见）。据此，[OII]3727最有可能是CFRS中大多数单发射线星系中的发射线。对重复观测的统计数据进行分析，得出 CFRS 中光谱识别可靠性的经验校准，确定额外观测能够识别最初未识别物体的频率，并提供内部速度精度的估计。最后给出了1415+52和2215+00 CFRS测量场中413个天体的光谱观测结果。
This paper is one of a series describing the Canada-France Redshift Survey (CFRS). It is shown how the shape of the continuum around the emission line can be used to distinguish between [OII] 3727 at z > 0.76 and H$\alpha$ at low redshift in spectra for which only a single isolated emission line is visible. Based on this, [OII] 3727 is most likely to be the emission line in most of the single emission line galaxies in the CFRS. The statistics of the repeated observations are analyzed to derive an empirical calibration of the reliability of the spectroscopic identifications in the CFRS, to determine how often additional observations could lead to the identification of an initially unidentified object and to provide an estimate of the internal velocity accuracy. Finally, the results of spectroscopic observations of 413 objects in the 1415+52 and 2215+00 CFRS survey fields are presented.