FIRST“有翼”和X形无线电源候选：II。新红移
FIRST "Winged" and X-shaped Radio Source Candidates: II. New Redshifts
摘要：
我们报告了用Hobby-Eberly望远镜和多镜望远镜对X形射电源的光谱观测，重点是论文I（Cheung 2007）中提出的第一次巡天的候选样本。总共成功获得了27个红移，其中21个是新的，包括新发现的这种类型的候选源。通过这些观察，论文I中的候选样品超过50%被光谱识别。发现了两个新的宽发射线X形射电源，而在大约三分之一的观测源中没有检测到发射线;线特性的详细研究推迟到未来的论文。最后，为了探讨它们与Fanaroff-Riley划分的关系，计算了光谱识别的50个X形射电星系样本的射电光度和宿主星系绝对星等，以确定它们在Owen-Ledlow平面中的位置。
英文摘要：
We report optical spectroscopic observations of X-shaped radio sources with the Hobby-Eberly Telescope and Multiple-Mirror Telescope, focused on the sample of candidates from the FIRST survey presented in Paper I (Cheung 2007). A total of 27 redshifts were successfully obtained, 21 of which are new, including that of a newly identified candidate source of this type which is presented here. With these observations, the sample of candidates from Paper I is over 50% spectroscopically identified. Two new broad emission-lined X-shaped radio sources are revealed, while no emission lines were detected in about one third of the observed sources; a detailed study of the line properties is deferred to a future paper. Finally, to explore their relation to the Fanaroff-Riley division, the radio luminosities and host galaxy absolute magnitudes of a spectroscopically identified sample of 50 X-shaped radio galaxies are calculated to determine their placement in the Owen-Ledlow plane.
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