论文标题
智慧调查IX的庞大而遥远的集群IX：合并群集中的高无线电活动
The Massive and Distant Clusters of WISE Survey IX: High Radio Activity in a Merging Cluster
论文作者
论文摘要
我们对Galaxy群集MOO J1506+5137 $ z $ = 1.09 $ \ pm $ 0.03进行了对银河系群体中的射电星系人群的多波长调查，在先前的工作中，我们确定为具有多个复杂的无线电源。这项工作中使用的组合数据集包括来自低频阵列两米的天空调查（Lots）的数据，NSF的Karl G. Jansky非常大的阵列（VLA），Robert C. Byrd Green Bank望远镜（GBT），Spitzer Spitzer Space望远镜和Dark Energy Camera Legacy Legacy Surveion（Decals）。我们发现，有五个无线电来源都位于聚类中心的500 kpc（$ \ sim $ 1 $^{\ prime} $之内，并具有无线电发光度$ p _ {\ mathrm {\ mathrm {1.4GHz}}} $> 1.6 $> 1.6 $ \ times $ 10 $ 10 $^{24} $ w hz $ w hz $ w hz $^hz $^hz $^{-1} $} $ 1}。典型的宿主星系是集群中最高的恒星质量星系之一。大型银河系种群中的非凡无线电活动似乎与集群的动态状态有关。星系分布表明正在进行的合并，并在主要群集的西北发现了一个亚组。此外，这五个来源中的两个被归类为弯曲尾源，其中一个是潜在的广角尾（WAT）/杂交形态无线电源（Hymors），表明动态环境。该群集还位于其他合并群集占据的质量富裕平面的区域，这是Wise调查的大量和遥远的群集（Madcows）。数据表明，在合并期间，无线电活动可以显着增强，这将导致观察到的群集中无线电活动增加的趋势，而红移的增加。
We present a multi-wavelength investigation of the radio galaxy population in the galaxy cluster MOO J1506+5137 at $z$=1.09$\pm$0.03, which in previous work we identified as having multiple complex radio sources. The combined dataset used in this work includes data from the Low-Frequency Array Two-metre Sky Survey (LoTSS), NSF's Karl G. Jansky Very Large Array (VLA), the Robert C. Byrd Green Bank Telescope (GBT), the Spitzer Space Telescope, and the Dark Energy Camera Legacy Survey (DECaLS). We find that there are five radio sources which are all located within 500 kpc ($\sim$1$^{\prime}$) of the cluster center and have radio luminosities $P_{\mathrm{1.4GHz}}$ > 1.6$\times$10$^{24}$ W Hz$^{-1}$. The typical host galaxies are among the highest stellar mass galaxies in the cluster. The exceptional radio activity among the massive galaxy population appears to be linked to the dynamical state of the cluster. The galaxy distribution suggests an ongoing merger, with a subgroup found to the northwest of the main cluster. Further, two of the five sources are classified as bent-tail sources with one being a potential wide-angle tail (WAT)/hybrid morphology radio source (HyMoRS) indicating a dynamic environment. The cluster also lies in a region of the mass-richness plane occupied by other merging clusters in the Massive and Distant Clusters of WISE Survey (MaDCoWS). The data suggest that during the merger phase radio activity can be dramatically enhanced, which would contribute to the observed trend of increased radio activity in clusters with increasing redshift.
