本超星系团周围星系的缠绕感
Winding sense of galaxies around the Local Supercluster
摘要:
本文分析了1\,621个径向速度在3\,000 km/s $^{-1}$ ~ 5\,000 km/s $^{-1}$之间的场星系的S形和Z形弯曲方向。本文用卡方检验、自相关检验和傅立叶检验研究了S形和Z形星系的择优排列。我们将星系分为32个子样本,并注意到S形和Z形星系的位置角(PA)分布之间有很好的一致性。晚型螺旋星系(Sc,Scd,Sd和Sm)的S形和Z形星系分布均匀,早型螺旋星系(Sa,Sab,Sb和Sbc)的S形和Z形星系分布均匀。一个显着的优势,S-模式星系注意到在棒旋。在Z-和S-模式螺旋的PA-分布中注意到随机对准。此外,均匀分布的S和Z形星系被发现是不变的全球扩张。总的S-模式星系的PA分布被发现是随机的,而优先排列注意到总的Z-模式星系。发现Z型星系的银道面倾向于位于赤道面。
英文摘要:
We present an analysis of the winding sense (S and Z-shaped) of 1\,621 field galaxies that have radial velocity between 3\,000 km s$^{-1}$ to 5\,000 km s$^{-1}$. The preferred alignments of S- and Z-shaped galaxies are studied using chi-square, auto-correlation and the Fourier tests. We classified total galaxies into 32 subsamples and noticed a good agreement between the position angle (PA) distribution of S- and Z-shaped galaxies. The homogeneous distribution of the S- and Z-shaped galaxies is noticed for the late-type spirals (Sc, Scd, Sd and Sm) than that of the early-types (Sa, Sab, Sb and Sbc). A significant dominance of S-mode galaxies is noticed in the barred spirals. A random alignment is noticed in the PA-distribution of Z- and S-mode spirals. In addition, homogeneous distribution of the S- and Z-shaped galaxies is found to be invariant under the global expansion. The PA-distribution of the total S-mode galaxies is found to be random, whereas preferred alignment is noticed for the total Z-mode galaxies. It is found that the galactic planes of Z-mode galaxies tend to lie in the equatorial plane.
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。