Copyright:CHART32 Team
原文:
Massive stars lie within NGC 6357, an expansive emission nebula complex some 6,500 light-years away toward the tail of the constellation Scorpius. In fact, positioned near center in this ground-based close-up of NGC 6357, star cluster Pismis 24 includes some of the most massive stars known in the galaxy, stars with nearly 100 times the mass of the Sun. The nebula’s bright central region also contains dusty pillars of molecular gas, likely hiding massive protostars from the prying eyes of optical instruments. Intricate shapes in the nebula are carved as interstellar winds and energetic radiation from the young and newly forming massive stars clear out the natal gas and dust and power the nebular glow. Enhancing the nebula’s cavernous appearance, narrowband image data was included in this composite color image in a Hubble palette scheme. Emission from sulfur, hydrogen, and oxygen atoms is shown in red green and blue hues. The alluring telescopic view spans about 50 light-years at the estimated distance of NGC 6357.
中文翻譯:
在NGC 6357內,有巨大恒星,這是一個擴大的發射星雲複合體,距離地球約6,500光年,位於蠍座的尾部。事實上,在這張基於地面拍攝的NGC 6357特寫照片的中心附近,星團Pismis 24包括一些已知的最巨大恒星,質量近乎太陽的100倍。星雲的明亮中央區域還包含塵埃柱,這些分子氣體可能隱藏著巨大的原恆星,躲避了光學儀器的觀察。星雲內部的精緻形狀是被年輕且新形成的巨大恒星所產生的星際風和高能輻射所雕刻的,這些恒星清除了誕生氣體和塵埃,並為星雲的光輝提供能源。為了增強星雲的洞穴外觀,這幅組合色彩圖像中包含了窄帶影像數據,且採用了哈勃顏色方案。硫、氫和氧原子的發射分別用紅色、綠色和藍色呈現。這幅迷人的望遠鏡視圖在估計距離NGC 6357的情況下,橫跨約50光年。
#NGC6357 #Pismis24 #EmissionNebula #MassiveStars #Astronomy #HubblePalette #SpacePhotography #CosmicWonders #Scorpius #StarFormation #Astrophysics
來源:NASA每日圖片