Title: Three New Spiral Galaxies with Active Nuclei Producing Double Radio Lobes Show Chinese title

Title: 具有活动星系核产生双射电瓣的三个新旋涡星系

Abstract: Double radio lobes are generally believed to be produced by active nuclei of elliptical galaxies. However, several double-lobed radio sources have been solidly found to be associated with spiral galaxies. By cross-matching $\sim9\times10^5$ spiral galaxies selected from the Sloan Digital Sky Survey DR8 data with the full 1.4-GHz radio source catalogs of NRAO VLA Sky Survey and Faint Images of Radio Sky at Twenty-centimeters, we identify three new spiral galaxies: J0326$-$0623, J1110+0321 and J1134+3046 that produce double radio lobes, and five double-lobed spirals previously known. By combining the newly discovered and all the other known cases in literature, we confirm the relation that more massive spirals could produce more powerful large-scale radio jets. We find that most of these spiral galaxies are located in a galaxy group or a poor cluster, in which the environment is denser than in the field, and about half of them are the central brightest galaxies in their parent system. We therefore suggest that the environment is one of the key factors for a spiral to produce double radio lobes. Show Chinese abstract

Abstract: 双射电源通常被认为是椭圆星系活跃核产生的，然而，几个双射电源已被确凿地发现与漩涡星系有关。通过交叉匹配斯隆数字巡天 (SDSS) DR8 数据中选出来的 $\sim9\times10^5$ 个漩涡星系和美国国家射电天文台甚大阵列 (NRAO VLA) 天空调查以及 20 厘米射电天空微弱图像 (FIRST) 的完整 1.4 GHz 射电源目录，我们确认了三个新的产生双射电源的漩涡星系：J0326$-$0623、J1110+0321 和 J1134+3046，以及之前已知的五个双射电源漩涡星系。结合新发现的案例和文献中的所有其他已知案例，我们确认了更高质量的漩涡星系能够产生更强大的大规模射电喷流这一关系。我们发现这些漩涡星系大多位于星系群或贫星团中，其环境比场中的环境密度更高，其中约有一半是其母系统中最亮的中心星系。因此，我们认为环境是漩涡星系产生双射电源的一个关键因素。