Interacting Galaxies in Clusters of Galaxies an dMassive Halos

螺旋星系的平坦自转曲线和来自椭圆星系的X射线通量暗示着星系周围存在暗物质，这被称为“大质量晕”。这些质量在可见光、红外线、无线电和X射线辐射中都没有被探测到，而只是作为引力源被“感觉到”。因此，很难检查星系的质量及其分布。这项研究的目的是通过观测由于潮汐作用力而相互作用的星系的形变来洞察大质量晕的本质。从这个角度来看，在过去的两年里，我们进行了以下七个项目。1.对大力神超星系团中的环状星系的调查。2.在Sextans中发现了一个新的环Galay的Seyfert 1核。3.相互作用对Arp 90中的双发射线云。4.室女座星系团矮星系轴的环境效应。5.气体对椭圆形变形的引力势作出响应。6.大力神超星系团中的CD星系IC1209周围的巨型弧线。7.关于Hoag型天体NGC6028及其相关星系的性质。巨晕是当前天文学的基本问题之一。从这个为期两年的研究项目中，我们已经获得了一些相互作用星系的宝贵数据，并愿意继续我们的研究。

Flat rotation curves of spiral galaxies and X-ray fluxes from elliptical galaxies implies the presence of dark matter around galaxies, which are called as "massive halo". These masses have not been detected in either visible light, infrared, radio, or x-ray radiations, but are only "felt" as the source of gravity.Hence it is quite difficult to examine the amount of mass and its distribution around galaxies.The aim of this research project is to get insight into the nature of massive halo by observing deformation of interacting galaxies due to tidal forces. From this point of view, we have conducted the following seven projects during thelast two years. 1. Survey of ring galaxies in the Hercules supercluster of galaxies. 2. Discovery of a Seyfert 1 nucleus of a new ring galay in Sextans. 3. Dual emission line clouds in the interacting pair Arp 90. 4. Environmental effects on dwarf galaxis of the Virgo cluster of galaxies. 5. Gas responce to an ovally deformed gravitational potential. 6. A giant arc around a cD galaxy IC 1209 in the hercules supercluster of galaxies. 7. On the nature of Hoag type object NGC 6028 and related galaxies.Massive halo is one of the fundamental problems of current astronomy. From this two-years research project, we have obtained invaluable data on a few interacting galaxies, and would like to continue our study further.