论文标题
Scuba2高红移明亮的类星体调查：远红外属性和弱线功能
SCUBA2 High Redshift Bright Quasar Survey: Far-infrared Properties and Weak-line Features
论文作者
论文摘要
我们提出了54个高红移类星体的亚麻连续调查（“ Scuba2高红移明亮的类星体调查”，以下是雪利酒），价格为$ 5.6 <z <6.9 $，带有类星体冲击光度，范围为（0.2 $ - $ - $ - $ - $ 5）\ times10^{14}^{14} {14} {14} \ commut commin commut ump commut umm commut，詹姆斯文员麦克斯韦望远镜上的BOLOMETER ARRAY-2（SCUBA2）。大约30％（16/54）的来源通过典型的850 $ $ m rms的灵敏度（1.2 $ \ rm mjy \，beam^{ - 1} $（$ s \ rm _ {ν，850 \，850 \，μmm} = 4 $ -5 mjy，at $>3.5σ$）。新的雪利酒检测指示$ \ rm 3.5 \ rm 3.5 \ times10^{12} $至$ \ rm 1.4 \ rm 1.4 \ times10^{13} $ $ $ $ $ l _ {\ odot} $的远红外（FIR）亮度，暗示了90至1060 $ m _ $ _ $ _ \ yr的极端星形形成率星系。与$ z = $ 2 $ - $ 5样本相比，fir发光类星体（$ l _ {\ rm fir}> 10^{13} \，l _ {\ odot} $）在$ z \ sim 6 $时更为罕见。这些物体的光学/近红外（NIR）光谱显示，源为11％（6/54）的$ ly $α$，发射线特征，这可能与中央活性银河系核（AGNS）的不同子强度有关。我们的SUSCUBA2调查证实了文献中报道的趋势，即与非探测器的类星体相比，具有亚毫米检测的类星体往往具有较弱的紫外线（UV）排放线。弱紫外线线发射与由巨大恒星形成提供动力的明亮灰尘连续发射之间的联系可能表明AGN-GALAXY演化的早期阶段，其中宽线区域开始缓慢发展或与中央电离源相保护，并且具有不寻常的特性，例如弱线特征或明亮的Fir发射。
We present a submillimetre continuum survey ('SCUBA2 High rEdshift bRight quasaR surveY', hereafter SHERRY) of 54 high redshift quasars at $5.6<z<6.9$ with quasar bolometric luminosities in a range of (0.2$-$$ 5)\times10^{14}\,L_{\odot}$, using the Submillimetre Common-User Bolometer Array-2 (SCUBA2) on the James Clerk Maxwell Telescope. About 30% (16/54) of the sources are detected with a typical 850$μ$m rms sensitivity of 1.2 $\rm mJy\,beam^{-1}$ ($S\rm _{ν,850\,μm} = 4$-5 mJy, at $>3.5σ$). The new SHERRY detections indicate far-infrared (FIR) luminosities of $\rm 3.5\times10^{12}$ to $\rm 1.4\times10^{13}$ $L_{\odot}$, implying extreme star formation rates of 90 to 1060 $M_{\odot}$ yr$^{-1}$ in the quasar host galaxies. Compared with $z =$ 2$-$5 samples, the FIR luminous quasars ($L_{\rm FIR} > 10^{13}\,L_{\odot}$) are more rare at $z \sim 6$. The optical/near-infrared (NIR) spectra of these objects show 11% (6/54) of the sources have weak Ly$α$, emission line features, which may relate to different sub-phases of the central active galactic nuclei (AGNs). Our SCUBA2 survey confirms the trend reported in the literature that quasars with submillimeter detections tend to have weaker ultraviolet (UV) emission lines compared to quasars with nondetections. The connection between weak UV quasar line emission and bright dust continuum emission powered by massive star formation may suggest an early phase of AGN-galaxy evolution, in which the broad line region is starting to develop slowly or is shielded from the central ionization source, and has unusual properties such as weak line features or bright FIR emission.
