IC 5146：茧状星云
(原标题: IC 5146: The Cocoon Nebula)
2024-08-19
浏览次数: 15
茧状星云内部是一个新形成的星团。这个美丽的星云编号为IC 5146，直径近15光年。它在北方夏季的夜空中高耸入云，距离天鹅座约4000光年。像其他恒星形成区域一样，它在红色、发光、由年轻、炽热的恒星激发的氢气以及在不可见的分子云边缘被尘埃反射的星光中脱颖而出。事实上，在这个星云中心附近发现的明亮恒星可能只有几十万年的历史，当它清除分子云恒星形成尘埃和气体的空洞时，它为星云发光提供了动力。长达48小时的整合产生了这张异常深的彩色视图，追踪了尘埃恒星托儿所内部和周围的诱人特征。
查看原文解释
Inside the Cocoon Nebula is a newly developing cluster of stars. Cataloged as IC 5146, the beautiful nebula is nearly 15 light-years wide. Soaring high in northern summer night skies, it's located some 4,000 light years away toward the constellation of the Swan (Cygnus). Like other star forming regions, it stands out in red, glowing, hydrogen gas excited by young, hot stars, and dust-reflected starlight at the edge of an otherwise invisible molecular cloud. In fact, the bright star found near the center of this nebula is likely only a few hundred thousand years old, powering the nebular glow as it clears out a cavity in the molecular cloud's star forming dust and gas. A 48-hour long integration resulted in this exceptionally deep color view tracing tantalizing features within and surrounding the dusty stellar nursery.
© Luis Romero Ventura