论文标题
Mg II和Al III的速度转移在类星体SDSS中的宽吸收线J134444.33+315007.6
Velocity shift of Mg II and Al III broad absorption lines in quasar SDSS J134444.33+315007.6
论文作者
论文摘要
我们首次报道了在类星体SDSS J134444.33+315007.6（以下简J1344+3150）中，Mg II和Al III广泛吸收线（BALS）的同步速度转移。我们从134 mg II BAL类星体的样品中发现了这条类星体，并进行了多个观测值。该类星体包含三个低离子化的BAL系统，其中最快为$ \ sim $$ -17,000 \，\ rm km \，s^{ - 1} $显示了$ \ sim $$ -1101 \，\ rm km km km km \，s^{ - 1} $ \ sim $ \ sim $ sim $ sim-11700000-11700-1170-117000001700017000170001700001700001700000001017000000。在大约3.21年的休息时间内，km \，s^{ - 1} $分别在其Mg II和Al III离子中。同时，该类星体还显示了其他各种变异特性，包括其连续体的明显弱化，多个发射线（Mg II，C III和AL III）的协调增强以及三个AL III吸收槽中的协调增强。这些变化特征令人信服地表明，J1344+3150的BAL流出受背景辐射能的影响。因此，我们推断出在类星体J1344+3150中系统A中显示的速度偏移可能表明由于中央源的辐射压力，流出的实际距离加速度。
We report, for the first time, a synchronized velocity shift of Mg II and Al III broad absorption lines (BALs) in quasar SDSS J134444.33+315007.6 (hereafter J1344+3150). We found this quasar from a sample of 134 Mg II BAL quasars with multi-epoch observations. This quasar contains three low-ionization BAL systems, the fastest of which at $\sim$$-17, 000\,\rm km\,s^{-1}$ shows a kinematic shift of $\sim$$-1101\,\rm km\,s^{-1}$ and $\sim$$-1170\,\rm km\,s^{-1}$ in its Mg II and Al III ions, respectively, during a rest-frame time of about 3.21 yr. Meanwhile, this quasar also shows other various variation characteristics, including an obvious weakening in its continuum, a coordinated enhancement in multiple emission lines (Mg II, C III and Al III), and a coordinated enhancement in three Al III absorption troughs. These variation characteristics convincingly indicate that the BAL outflows of J1344+3150 are under the influence from the background radiation energy. Thus, we infer that the velocity shift displayed in system A in the quasar J1344+3150 may indicate an actual line-of-sight acceleration of an outflow due to the radiation pressure from the central source.
