论文标题
在当地宇宙II中解读了射电星系的大规模环境。环境特性的统计分析
Deciphering the Large-Scale Environment of Radio Galaxies in the Local Universe II. A Statistical Analysis of Environmental Properties
论文作者
论文摘要
在我们先前的分析中，我们研究了本地宇宙中两个射电星系（RGS）样本的大规模环境（即红移z <0.15），根据其无线电形态归为fr I和fr II。使用i）非常均匀的目录和ii）一种新方法（称为宇宙过度密度）来研究其大规模环境。我们得出的结论是，RGS独立于其无线电扩展结构的形状，RG居住在富含星系的大型环境中，具有相似的特征和丰富性。在目前的工作中，我们首先强调了我们的程序的其他优势，这些程序不会遭受宇宙学的偏见和/或工件，然后我们进行了额外的统计测试以增强我们以前的结果。我们还使用宇宙学邻居研究了RG环境的性质。我们发现，弗里斯（Fris）和弗里斯（Friis）的大规模环境在中央RG的性质上非常相似，并且独立。最后，我们强调了比较同一红移箱中的无线电来源以获取其大规模环境的完整概述的重要性。
In our previous analysis we investigated the large-scale environment of two samples of radio galaxies (RGs) in the local Universe (i.e. with redshifts z<0.15), classified as FR I and FR II on the basis of their radio morphology. The analysis was carried out using i) extremely homogeneous catalogs and ii) a new method, known as cosmological overdensity, to investigate their large-scale environments. We concluded that, independently by the shape of their radio extended structure, RGs inhabit galaxy-rich large-scale environments with similar characteristics and richness. In the present work, we first highlight additional advantages of our procedure, that does not suffer cosmological biases and/or artifacts, and then we carry out an additional statistical test to strengthen our previous results. We also investigate properties of RG environments using those of the cosmological neighbors. We find that large-scale environments of both FRIs and FRIIs are remarkably similar and independent on the properties of central RG. Finally, we highlight the importance of comparing radio sources in the same redshift bins to obtain a complete overview of their large-scale environments.
