Near‐infrared spectroscopy of powerful compact steep‐spectrum radio sources
Near‐infrared spectroscopy of powerful compact steep‐spectrum radio sources
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DOI：
10.1111/j.1365-2966.2003.07155.x
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发表时间：
2003-09
影响因子：
4.8
通讯作者：
P. Hirst;N. Jackson;Steve Rawlings University of Manchester;J. Bank;Jach;O. Astrophysics
中科院分区：
文献类型：
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作者：
P. Hirst;N. Jackson;Steve Rawlings University of Manchester;J. Bank;Jach;O. Astrophysics
我们获得了一个小样本的近红外光谱的强大紧凑陡峭光谱（CSS）射电源主要，但不完全，从3CR样品。我们发现[O III] λ5007谱线的等效宽度和亮度分布与其他更大的、可能更老的、高红移3C天体没有差异，这表明类星体的亮度随着类星体的年龄大致保持不变。我们还在3C 241中发现了一条可能的宽谱线，这为最近在一些射电星系中发现宽谱线提供了新的证据。
We have obtained near-infrared spectroscopy of a small sample of powerful compact steep-spectrum (CSS) radio sources mainly, but not exclusively, from the 3CR sample. We find no differences between the distributions in the equivalent width and luminosity of the [O III] λ5007 line for our sample and other larger, presumably older, high-redshift 3C objects, suggesting that the underlying quasar luminosity remains roughly constant as quasars age. We also find a possible broad line in 3C 241, adding to recent evidence for broad lines in some radio galaxies.