英仙座的双星团
(原标题: The Double Cluster in Perseus)
2023-07-07
浏览次数: 14
这片美丽的星空横跨英仙座北部的三个满月（1.5度）。它拥有著名的疏散星团h和英仙座Chi。同样编号为NGC 869（上）和NGC 884，这两个星团都距离我们大约7000光年远，其中的恒星比太阳年轻得多，温度也高得多。这两个星团只相隔几百光年，根据它们各自恒星的年龄，它们都年轻了1300万年，这表明它们很可能是同一个恒星形成区域的产物。双筒望远镜总是一个令人满意的景象，即使在黑暗的地方也可以用肉眼看到双星团。
查看原文解释
This pretty starfield spans about three full moons (1.5 degrees) across the heroic northern constellation of Perseus. It holds the famous pair of open star clusters, h and Chi Persei. Also cataloged as NGC 869 (top) and NGC 884, both clusters are about 7,000 light-years away and contain stars much younger and hotter than the Sun. Separated by only a few hundred light-years, the clusters are both 13 million years young based on the ages of their individual stars, evidence that they were likely a product of the same star-forming region. Always a rewarding sight in binoculars, the Double Cluster is even visible to the unaided eye from dark locations.
© Mårten Frosth