论文标题
类星体CTSC30.10的波长分辨的混响映射：解剖MGII和FEII发射区域
Wavelength-resolved Reverberation Mapping of quasar CTSC30.10: Dissecting MgII and FeII emission regions
论文作者
论文摘要
我们介绍了针对MGII宽线和FEII伪核的结果的结果，用于发光的类星体CTS C30.10（Z = 0.90052），南非大型望远镜覆盖2012-2021年。我们的目的是解开MGII和UV FEII变异性，以及遥远类星体的UV FEII时间延迟的首次测量。我们使用了几种方法进行时间延迟测量，并确定了FEII和MGII时间延迟，并进行了波长分辨的时间延迟研究，以组合MGII和FEII在2700-2900Årestframe波长范围内的组合。我们获得了MGII的时间延迟为$ 275.5^{+12.4} _ { - 19.5} $ DAYS在休息框架中，而对于FEII，我们有两个可能的解决方案，$ 270.0^{+13.8} _ { - 25.3} $ 25.3} $ and $ 180.3^^{+26.6.6.6.6.6} _ IN;将此结果与NGC 5548的FEII UV时间延迟的旧测量相结合，我们首次讨论了紫外线FEII的半径 - 光度关系，而斜率与不确定性内的$ 0.5 $一致。由于FEII时间延迟的时间延迟较短，但线比MGII狭窄，因此我们建议线延迟测量偏向于面向观察者的BLR部分，而Fe II发射的大部分可能来自更遥远的BLR区域，而BLR区域却屏蔽了一个较遥远的BLR区域。
We present the results of the reverberation monitoring aimed at MgII broad line and FeII pseudocontinuum for the luminous quasar CTS C30.10 (z = 0.90052) with the Southern African Large Telescope covering the years 2012-2021. We aimed at disentangling the MgII and UV FeII variability and the first measurement of UV FeII time delay for a distant quasar. We used several methods for time-delay measurements and determined both FeII and MgII time delays as well as performed a wavelength-resolved time delay study for a combination of MgII and FeII in the 2700 - 2900 Årestframe wavelength range. We obtain the time delay for MgII of $275.5^{+12.4}_{-19.5}$ days in the rest frame, while for FeII we have two possible solutions of $270.0^{+13.8}_{-25.3}$ days and $180.3^{+26.6}_{-30.0}$ in the rest frame. Combining this result with the old measurement of FeII UV time delay for NGC 5548 we discuss for the first time the radius-luminosity relation for UV FeII with the slope consistent with $0.5$ within uncertainties. Since FeII time delay has a shorter time-delay component but lines are narrower than MgII, we propose that the line delay measurement is biased towards the BLR part facing the observer, with the bulk of the Fe II emission may arise from the more distant BLR region, one that is shielded from the observer.
