首页 | 本学科首页   官方微博 | 高级检索  
     检索      


The Phoenix survey: the pairing fraction of faint radio sources
Authors:A E Georgakakis  B Mobasher  L Cram  A Hopkins
Institution:Astrophysics Division, Space Science Department of ESA, ESTEC, Postbus 299, NL-2200 AG Noordwijk, the Netherlands; Osservatorio Astronomico di Roma, Via dell'Osservatorio 5, I-00040 Monteporzio Catone, Italy
Abstract:The significance of tidal interactions in the evolution of the faint radio population (sub-mJy) is studied using a deep and homogeneous radio survey (1.4 GHz), covering an area of 3.14 deg2 and complete to a flux density of 0.4 mJy. Optical photometric and spectroscopic data are also available for this sample. A statistical approach is employed to identify candidate physical associations between radio sources and optically selected 'field' galaxies. We find an excess of close pairs around optically identified faint radio sources, albeit at a low significance level, implying that the pairing fraction of the sub-mJy radio sources is similar to that of 'field' galaxies (at the same magnitude limit) but higher than that of local galaxies.
Keywords:accretion  accretion discs  galaxies: individual: NGC 1052  X-rays: galaxies
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号