Infrared spectroscopy of 11 radio galaxies at Z equals 2-4 - Evidence that some high-redshift radio galaxies may be protogalaxies
Infrared spectroscopy of 11 radio galaxies at Z equals 2-4 - Evidence that some high-redshift radio galaxies may be protogalaxies
复制标题
Z 等于 2-4 处 11 个射电星系的红外光谱 - 一些高红移射电星系可能是原星系的证据
DOI：
10.1086/172808
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发表时间：
1993
期刊：
影响因子：
--
通讯作者：
S. Rawlings
中科院分区：
文献类型：
--
作者：
S. Eales;S. Rawlings
利用UKIRT上的一个新的阵列光谱仪获得了z = 2-4的11个射电星系的红外光谱，并根据它们在两次观测运行期间位于天空可到达的部分以及适当的天体测量的可用性来选择星系。所有的天体都检测到了发射线，主要是来自z大于2.9的五个星系的O III 495.9 A/500.7 A的禁偶线，以及来自z小于2.9的星系的H-α，N II 654.8 A/658.3 A的禁偶线。发现其中一些星系可能处于原星系阶段。
Infrared spectroscopy of 11 radio galaxies at z equals 2-4 was obtained using a new array spectrometer on UKIRT, and choosing the galaxies on the basis of their being in an accessible part of the sky during the two observing runs and for the availability of adequate astrometry. Emission lines were detected from all of the objects, principally the forbidden O III 495.9 A/500.7 A doublet from the five galaxies at z greater than 2.9, and the H-alpha, forbidden N II 654.8 A/658.3 A complex from the galaxies at z less than 2.9. It was found that some of these galaxies may be in a protogalactic phase.