梅西耶6
(原标题: Messier 6)
2025-07-19
浏览次数: 1509
梅西耶著名的非彗星目录中的第六个天体，梅西耶6是一个星系或疏散星团。M6是一个由大约100颗恒星组成的星系，年龄都在1亿年左右，位于银河系中心天蝎座，距离银河系约1600光年。这个美丽的星团也被编号为NGC 6405，它的轮廓让人想起了它的绰号——蝴蝶星团。在这张彩色宇宙快照的中心附近，被该区域氢气发出的漫射红色辐射所包围，星团中大部分是热的，因此是蓝色的恒星。但最亮的星团成员是一颗低温的k型巨星。这只蝴蝶被命名为BM Scorpii，在它的一根触角末端附近，它发出橙黄色的光芒。这张望远镜的视野横跨了天空中近2个满月。根据梅西耶6的估计距离，这是25光年。
查看原文解释
The sixth object in Charles Messier's famous catalog of things which are not comets, Messier 6 is a galactic or open star cluster. A gathering of 100 stars or so, all around 100 million years young, M6 lies some 1,600 light-years away toward the central Milky Way in the constellation Scorpius. Also cataloged as NGC 6405, the pretty star cluster's outline suggests its popular moniker, the Butterfly Cluster. Surrounded by diffuse reddish emission from the region's hydrogen gas the cluster's mostly hot and therefore blue stars are near the center of this colorful cosmic snapshot. But the brightest cluster member is a cool K-type giant star. Designated BM Scorpii it shines with a yellow-orange hue, seen near the end of one of the butterfly's antennae. This telescopic field of view spans nearly 2 Full Moons on the sky. That's 25 light-years at the estimated distance of Messier 6.
© Xinran Li