作为星系团示踪物的有尾射电星系。GMRT的意外发现
Tailed radio galaxies as tracers of galaxy clusters. Serendipitous discoveries with the GMRT
摘要：
我们报告的发现四个新的射电星系的尾巴形态。有尾射电星系通常存在于丰富的环境中，因此它们的存在可以作为星系团的示踪物。射电星系是在巨型米波射电望远镜（GMRT）在610 MHz和327 MHz进行的观测中发现的，用于其他研究。我们检查了光学和X射线波段的文献和档案，以寻找星系团或它们所在的星系团。所有在GMRT场中偶然发现的尾射电星系都位于丰富的环境中。其中两个属于候选星系团NCS J 090232 +204358，位于z（phot）=0.0746;一个属于星系团MaxBCGJ223.97317+22.15620，位于z（phot）=0.2619;最后，我们认为第四个星系团正在探测一个星系团，位于A262后面，z=0.1177，到目前为止还没有在任何波段被探测到。我们的结果加强了高灵敏度和高分辨率射电数据在中红移星系团探测中的相关性。
英文摘要：
We report on the discovery of four new radio galaxies with tailed morphology. Tailed radio galaxies are generally found in rich environments, therefore their presence can be used as tracer of a cluster. The radio galaxies were found in the fields of Giant Metrewave Radio Telescope (GMRT) observations carried out at 610 MHz and 327 MHz devoted to other studies. We inspected the literature and archives in the optical and X-ray bands to search for galaxy clusters or groups hosting them. All the tailed radio galaxies serendipitously found in the GMRT fields are located in rich environments. Two of them belong to the candidate cluster NCS J090232+204358, located at z(phot)=0.0746; one belongs to the cluster MaxBCGJ223.97317+22.15620 at z(phot)=0.2619; finally we suggest that the fourth one is probing a galaxy cluster at z=0.1177, located behind A262, and so far undetected in any band. Our results strenghten the relevance of high sensitivity and high resolution radio data in the detection of galaxy clusters at intermediate redshift.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
