Astronomy Picture of the Day——横跨礁湖星云的泛星计划
Pan-STARRS Across the Lagoon
Image Data Credit: Pan-STARRS, Eric Coles,Martin Pugh - Processing: Eric Coles
Explanation: Ridges of glowing interstellargas and dark dust clouds inhabit the turbulent, cosmic depths of the LagoonNebula. Also known as M8, the bright star forming region is about 5,000light-years distant. But it still makes for a popular stop on telescopic toursof the constellation Sagittarius, toward the center of our Milky Way Galaxy.Dominated by the telltale red emission of ionized hydrogen atoms recombiningwith stripped electrons, this stunning view of the Lagoon is over 100light-years across. At its center, the bright, compact, hourglass shape is gasionized and sculpted by energetic radiation and extreme stellar winds from amassive young star. In fact, the many bright stars of open cluster NGC 6530drift within the nebula, just formed in the Lagoon several million years ago.Broadband image data from Pan-STARRS (Panoramic Survey Telescope & RapidResponse System) was combined with narrowband data from amateur telescopes tocreate this wide and deep portrait of the Lagoon Nebula.
横跨礁湖星云的泛星计划
炽热的星际气体和黑暗尘埃云的脊状结构位于宇宙深处狂暴的礁湖星云。这个被称为M8的恒星形成区距离地球约5000光年。然而，它仍是银河系中心方向上人马座内的一个热门望远镜观测目标。这幅礁湖星云的精美图像跨越超过100光年的天区，呈现出由电离氢原子和剥离的电子重新结合后辐射出的红色辉光。在该星云的中心，明亮致密的沙漏状结构是气体受到一颗大质量年轻恒星发出的高能辐射和极端恒星风的电离和侵蚀作用而成。实际上，疏散星团NGC6530的许多明亮恒星都在星云内漂移，数百万年前才形成于礁湖星云中。来自泛星计划（全景巡天望远镜和快速响应系统）的宽带图像数据与来自部分业余爱好者的望远镜窄带数据相结合，共同拼成了这幅广阔的礁湖星云深空影像。
参考文献：
https://apod.nasa.gov/apod/image/1904/LagoonPanSTARRS_ColesPugh2048.jpg
近期文章：
Astronomy Picture of the Day——南天的蟹状星云