VLT/UVES observation of the SDSS J2357−0048 outflow
VLT/UVES observation of the SDSS J2357−0048 outflow
复制标题
SDSS J2357–0048 流出的 VLT/UVES 观察
DOI：
10.1093/mnras/stac2638
复制
发表时间：
2022
影响因子：
4.8
通讯作者：
Hall, Patrick B.
中科院分区：
文献类型：
--
作者：
Byun, Doyee;Arav, Nahum;Hall, Patrick B.
我们在类星体SDSS J235702.54−004824.0的VLT/UVES光谱中发现了一个宽吸收线（BAL）流出，我们在其中识别出了四个子成分。我们测量了其中一个子成分（v= −1600 km s−1）中离子的柱密度，其中包括Oi和Feii。我们发现这个分量的动力学光度最多是类星体的爱丁顿光度。这接近活跃星系核反馈所需的数量。我们还研究了在atv= −8700 km s−1时发现的Civmini-BAL的时间变率，这表明在2000年至2001年的SDSS观测中，它具有较浅和较窄的吸收特征，但在2005年及以后的光谱中没有。
We found a broad absorption line (BAL) outflow in the VLT/UVES spectrum of the quasar SDSS J235702.54−004824.0, in which we identified four subcomponents. We measured the column densities of the ions in one of the subcomponents (v= −1600 km s−1), which include Oiand Feii. We found the kinetic luminosity of this component to be at mostof the quasar’s Eddington luminosity. This is near the amount required to contribute to active galactic nucleus feedback. We also examined the time variability of a Civmini-BAL found atv= −8700 km s−1, which shows a shallower and narrower absorption feature attached to it in previous SDSS observations from 2000 to 2001, but not in the spectra from 2005 and onwards.