Copyright:César Blanco
González
原文:
Hot, young stars and cosmic pillars of gas and dust seem to crowd into NGC 7822. At the edge of a giant molecular cloud toward the northern constellation Cepheus, the glowing star forming region lies about 3,000 light-years away. Within the nebula, bright edges and dark shapes are highlighted in this colorful skyscape. The image includes data from narrowband filters, mapping emission from atomic oxygen, hydrogen, and sulfur into blue, green, and red hues. The atomic emission is powered by energetic radiation from the hot stars, whose powerful winds and radiation also sculpt and erode the denser pillar shapes. Stars could still be forming inside the pillars by gravitational collapse, but as the pillars are eroded away, any forming stars will ultimately be cutoff from their reservoir of star stuff. This field spans around 40 light-years at the estimated distance of NGC 7822.
中文翻譯:
在NGC 7822中，炙熱而年輕的恆星與宇宙中氣體和塵埃的巨柱聚集在一起。在北天蝎座的這個巨大分子雲邊緣，這片發光的星形成區域約距離地球3,000光年。在這個星雲中，明亮的邊緣和陰暗的形狀在這片多彩的天空中熠熠生輝。這幅影像使用了窄帶濾鏡的數據，將來自原子氧、氫和硫的發射映射為藍色、綠色和紅色的色調。這些原子發射是受到熱恆星釋放的高能輻射驅動的，這些恆星的強風和輻射也在雕刻和侵蝕著更密集的柱形結構。星星可能仍然在柱內透過重力塌縮形成，但隨著柱形的侵蝕，正在形成的恆星最終將會與其星際物質資源隔絕。這片空間在NGC 7822估計的距離下，橫跨約40光年。
#NGC7822 #星雲 #星形成區 #宇宙 #天文 #科學探索 #年輕恆星 #氣體與塵埃 #星際物質 #天文攝影 #天文學
來源:NASA每日圖片
