Kavli Affiliate: Xiang Zhang
| First 5 Authors: Baoqiang Lao, Heinz Andernach, Xiaolong Yang, Xiang Zhang, Rushuang Zhao
| Summary:
Bent-tail radio galaxies (BTRGs) are characterized by bent radio lobes. This
unique shape is mainly caused by the movement of the galaxy within a cluster,
during which the radio jets are deflected by the intra-cluster medium. A
combined method, which involves a deep learning-based radio source finder along
with visual inspection, has been utilized to search for BTRGs from the Faint
Images of the Radio Sky at Twenty-centimeters survey images. Consequently, a
catalog of 4876 BTRGs has been constructed, among which 3871 are newly
discovered. Based on the classification scheme of the opening angle between the
two jets of the galaxy, BTRGs are typically classified as either
wide-angle-tail (WAT) sources or narrow-angle-tail (NAT) sources. Our catalog
comprises 4424 WATs and 652 NATs. Among these, optical counterparts are
identified for 4193 BTRGs. This catalog covers luminosities in the range of
$1.91times10^{20} leq L_{rm 1.4,GHz} leq 1.45times10^{28}$ ${rm
W,Hz^{-1}}$ and redshifts from $z = 0.0023$ to $z = 3.43$. Various physical
properties of these BTRGs and their statistics are presented. Particularly, by
the nearest neighbor method, we found that 1825 BTRGs in this catalog belong to
galaxy clusters reported in literature.
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