Using the 1.4?GHz Australia Telescope Large Area Survey, supplemented by the 1.4?GHz Very Large Array images, we undertook a search for bent-tailed (BT) radio galaxies in the Chandra Deep Field South. Here we present a catalog of 56 detections, which include 45 BT sources, 4 diffuse low-surface-brightness objects (1 relic, 2 halos, and 1 unclassified object), and a further 7 complex, multi-component sources. We report BT sources with rest-frame powers in the range 1022 ≤ P 1.4 GHz ≤ 1026 W Hz–1, with redshifts up to 2 and linear extents from tens of kiloparsecs up to about 1 Mpc. This is the first systematic study of such sources down to such low powers and high redshifts and demonstrates the complementary nature of searches in deep, limited area surveys as compared to shallower, large surveys. Of the sources presented here, one is the most distant BT source yet detected at a redshift of 2.1688. Two of the sources are found to be associated with known clusters: a wide-angle tail source in A3141 and a putative radio relic which appears at the infall region between the galaxy group MZ 00108 and the galaxy cluster AMPCC 40. Further observations are required to confirm the relic detection, which, if successful, would demonstrate this to be the least powerful relic yet seen with P 1.4 GHz = 9 × 1022 W Hz–1. Using these data, we predict future 1.4?GHz all-sky surveys with a resolution of ~10 arcsec and a sensitivity of 10 μJy will detect of the order of 560,000 extended low-surface-brightness radio sources of which 440,000 will have a BT morphology.
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机译：使用1.4？GHz澳大利亚望远镜大面积勘测，再加上1.4？GHz超大型阵列图像，我们在钱德拉深场南部搜寻了弯尾（BT）射电星系。在这里，我们提供了56种检测的目录，其中包括45个BT来源，4个弥散的低表面亮度对象（1个文物，2个晕圈和1个未分类的对象），以及另外7个复杂的多组分源。我们报告的BT源的静止帧功率在1022≤P 1.4 GHz≤1026 W Hz-1范围内，红移高达2，线性范围从几十千帕斯卡到大约1 Mpc。这是对低功率和高红移之类的此类资源的首次系统研究，并证明了与较浅的大型调查相比，深层，有限区域调查中搜索的互补性。在此处显示的源中，一个是最远的BT源，尚未在2.1688的红移处检测到。发现其中两个源与已知星团有关：A3141中的一个广角尾源和一个推定的无线电遗迹，出现在MZ 00108星系和AMPCC 40星系之间的下降区域。确认文物检测，如果成功，它将证明它是P 1.4 GHz = 9×1022 W Hz-1时所见到的最不强大的文物。利用这些数据，我们预测未来的1.4？GHz全天候测量，分辨率约为10 arcsec，灵敏度为10μJy，将探测到560,000个扩展的低表面亮度无线电源，其中有440,000个具有BT形态。 。
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