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首页> 外文期刊>PASJ: Publications of the Astronomical Society of Japan >Properties of the environment around active galactic nucleus / luminous galaxy pairs through the HSC wide survey
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Properties of the environment around active galactic nucleus / luminous galaxy pairs through the HSC wide survey

机译：通过HSC宽调查，活性银核/发光星系对环境周围的环境属性

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摘要

We investigated the properties of active galactic nucleus (AGN) environments, particularly environments where the association of a luminous galaxy (LG) is found within 4 Mpc from an AGN with redshift 0.8-1.1. For comparison, three additional AGN environments, (namely, AGNs of all types, type 1 AGNs with X-ray and/or radio detection, and type 2 AGNs) and an environment of blue M-*,the characteristic luminosity of the Schechter function, galaxies were investigated. The cross-correlation function with the surrounding galaxies was measured and compared between the AGN and blue galaxy samples. We also compared the distributions of color, absolute magnitude, and stellar mass of the galaxies around such target objects. The properties of clusters detected using surrounding galaxies selected based on a photometric redshift were examined and compared for different samples. The target AGNs were drawn from the Million Quasars (MILLIQUAS) catalog, and the blue galaxies were drawn from six redshift survey catalogs (SDSS, WiggleZ, DEEP2, VVDS, VIPERS, and PRIMUS). The galaxies used as a measure of the environment around the targets were drawn from the 518a internal data released by the Hyper Suprime-Cam Subaru Strategic Program. We found that, among the five AGN and blue galaxy samples considered, the environment of AGN-LG pairs is the most enriched with luminous galaxies. We also found an enhancement in the number of mass-selected clusters in the AGN-LG pair sample against those in the other samples. The results obtained in this study indicate that existence of multiple clusters is the major driver in the association of AGNs and LGs, rather than a single large-mass dark matter halo hosting the AGN.
机译：我们研究了活动星系核（AGN）环境的性质，特别是在距离红移0.8-1.1的活动星系核（AGN）4mpc范围内发现发光星系（LG）关联的环境。为了进行比较，研究了另外三种活动星系核环境（即所有类型的活动星系核、具有X射线和/或无线电探测的1型活动星系核，以及2型活动星系核）和一种蓝M-*（Schechter函数的特征光度）星系环境。测量并比较了AGN和蓝色星系样本与周围星系的互相关函数。我们还比较了这些目标物体周围星系的颜色、绝对星等和恒星质量的分布。对使用基于光度红移选择的周围星系探测到的星团的性质进行了检查，并对不同样本进行了比较。目标活动星系核来自百万类星体（毫类星体）目录，而蓝色星系则来自六个红移测量目录（SDS、WiggleZ、DEEP2、VVDS、毒蛇和PRIMUS）。这些星系被用来衡量目标周围的环境，它们是从超级超级超级星空相机斯巴鲁战略计划发布的518a内部数据中提取出来的。我们发现，在所考虑的五个AGN和蓝色星系样本中，AGN-LG对的环境中最富含发光星系。我们还发现，与其他样品相比，AGN-LG对样品中质量选择团簇的数量有所增加。本研究的结果表明，多个星系团的存在是AGN和LGs关联的主要驱动力，而不是承载AGN的单个大质量暗物质晕。

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