马卡莱恩星系炼
影像来源与版权:Sergio Kaminsky

说明:有一串很醒目的星系,名为马卡莱恩星系炼,穿过室女座星系团的中心。上面影像呈现了这串星系,其中最醒目的是影像右下角、无明显结构的两个大型荚状星系M84和M86。它们左上方的互扰星系对,则称为马卡莱恩之眼。这些星系隶属的室女座星系团,是离我们最近的星系团,拥有超过2,000个成员星系,并对银河系所在的本星系群之星系成员,有相当明显的重力牵引。位在北天室女座内的室女座星系团,其中心离我们大约有7千万光年远。在这个星系炼里,至少有七个星系像是在同步运动,不过,其余的成员只是恰好出现在同一方向而已。
翻译:“每日一天文图”成大物理分站

Markarian’s Chain of Galaxies
Image Credit & Copyright: Sergio Kaminsky

Explanation: Across the heart of the Virgo Cluster of Galaxies lies a striking string of galaxies known as Markarian’s Chain. The chain, pictured here, is highlighted on the right with two large but featureless lenticular galaxies, M84 and M86. Prominent to their lower left is a pair of interacting galaxies known as The Eyes. The home Virgo Cluster is the nearest cluster of galaxies, contains over 2000 galaxies, and has a noticeable gravitational pull on the galaxies of the Local Group of Galaxies surrounding our Milky Way Galaxy. The center of the Virgo Cluster is located about 70 million light years away toward the constellation of Virgo. At least seven galaxies in the chain appear to move coherently, although others appear to be superposed by chance.
Astronomy Picture of the Day 03/31/2019