论文标题
类星体的圆形培养基：横向和视线吸收
The circum-galactic medium of quasars: transverse and line-of-sight absorptions
论文作者
论文摘要
类星体投影对（QPP）可用于通过研究在前景类星体相同红移的背景类星体中的中间吸收线的研究来研究类星体的环境培养基。在这里，我们报告了14 QPP的Gran Telescopio Canarias的光谱法。在7例中，我们发现与前景类星体相关的MGII吸收线。仅在两种情况下揭示了视线吸收（LOS）。这些新观察结果补充了我们先前的研究对其他30个QPP进行的。报告了有关完整数据集中与前景类星体相关的中间吸收系的特性的简要讨论。
Quasar projected pairs (QPPs) can be used for investigating the circumgalactic medium of quasars through the study of intervening absorption lines in the spectrum of the background quasar that are at the same redshift of the foreground quasar. Here we report on optical spectroscopy, gathered at Gran Telescopio Canarias, of 14 QPPs. In 7 cases we find MgII absorption lines associated with the foreground quasar. Only for two cases line-of-sight absorptions (LOS) are revealed. These new observations complement our previous study performed on other 30 QPPs. A brief discussion of the properties of the intervening absorption lines associated with the foreground quasar for the full dataset is reported.
