The environment of C- and S-shaped radio galaxies
The environment of C- and S-shaped radio galaxies
复制标题
C型和S型射电星系的环境
DOI：
10.1088/1674-4527/19/9/127
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发表时间：
2019-09
影响因子：
1.8
通讯作者：
Xiao-Li Lian
中科院分区：
文献类型：
--
作者：
Yu-Xing Liu;Hai-Guang Xu;Dong-Chao Zheng;Wei-Tian Li;Zheng-Hao Zhu;Zhi-Xian Ma;Xiao-Li Lian
我们使用普罗克托样本研究了不同形态类型的射电星系的环境，该样本是从20厘米(第一次)调查档案的射电天空的微弱图像建立的。在普罗克托划分的15种射电星系类型中，选择了199个C形(即广角或窄角尾部)和203个S形(即S或Z形)源，它们位于0.02<；z<；1的红移范围内，因为这两个子样本比普罗克托样本中的其他子样本相对较大。通过将这些射电星系与来自斯隆数字巡天数据库的光源进行交叉匹配，并对每个射电星系周围0.5MPC距离内r波段绝对星等大于−19的射电星系进行计数，我们发现丰度大于10的C形源的比例大于S形源的比例。我们还将样本中的射电星系与NASA/IPAC河外数据库中定义的最亮星系团星系(BCG)进行了关联，并推断C形源比S形源更有可能是BCG。这些结果支持这样一种观点，即C型射电星系通常比其他形态类型的射电星系所处的环境更丰富。
We study the environment of radio galaxies with different morphological types using the Proctor sample, which was built from the Faint Images of the Radio Sky at Twenty-Centimeters (FIRST) survey archive. Among the 15 radio galaxy types classified by Proctor, 199 C-shaped (i.e., wide- or narrow-angle tail) and 203 S-shaped (i.e., S- or Z-shaped) sources are selected in this work, which are located in the redshift range of 0.02 < z < 1, because these two subsamples are relatively larger than the other subsamples in the Proctor sample. By cross-matching these radio galaxies with the optical sources drawn from the Sloan Digital Sky Survey (SDSS) database and counting the SDSS sources with an r-band absolute magnitude brighter than −19 located within a 0.5 Mpc distance around each source (i.e., the richness), we find that the fraction of C-shaped sources with a richness above 10 is larger than that of S-shaped sources. We have also correlated the radio galaxies in our sample with the brightest cluster galaxies (BCGs) defined in the NASA/IPAC Extragalactic Database (NED), and infer that the C-shaped sources are more likely to be BCGs than the S-shaped sources. These results support the idea that C-shaped radio galaxies often reside in a richer environment than radio galaxies with other morphological types.
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DOI：
10.1088/0004-6256/141/3/88
发表时间：
2010-08
期刊：
The Astronomical Journal
影响因子：
--
作者：
J. Wing;E. Blanton
通讯作者：
J. Wing;E. Blanton
影响因子：
1.9
作者：
E. Florido;E. Battaner;M. L. Sánchez-Saavedra
通讯作者：
E. Florido;E. Battaner;M. L. Sánchez-Saavedra
DOI：
10.1046/j.1365-8711.2000.03431.x
发表时间：
1999-12
影响因子：
4.8
作者：
C. Kaiser;A. Schoenmakers;Hans-Walter Rix University of Oxford;D. Physics;M. F. Astrophysik
通讯作者：
C. Kaiser;A. Schoenmakers;Hans-Walter Rix University of Oxford;D. Physics;M. F. Astrophysik
DOI：
10.1086/513095
发表时间：
2007
期刊：
The Astronomical Journal
影响因子：
--
作者：
C. Cheung
通讯作者：
C. Cheung
影响因子：
4.8
作者：
E. Rozo;E. Rykoff;M. Becker;Rachel Reddick;R. Wechsler
通讯作者：
E. Rozo;E. Rykoff;M. Becker;Rachel Reddick;R. Wechsler