EXtended-UV galaxies surface brightness

Extended-UV (XUV) galaxies are galaxies presenting an extended outer ultraviolet disks. Although some Giant Low Surface Brightness (GLSB) galaxies are also XUV, their relation...外延紫外（Extended-UV, XUV）星系是指具备延展外部紫外盘的星系。尽管部分巨低表面亮度（Giant Low Surface Brightness, GLSB）星系同样属于XUV星系范畴，二者的关联……