塞彭斯的原恆星外流
Protostellar Outflows in Serpens
發表日期：2024-06-27
這幅詹姆斯-韋伯太空望遠鏡拍攝的蛇尾星雲特寫，捕捉到了從新生恆星噴射出的物質噴流。強大的原恆星外流是雙極的，雙噴流向相反的方向噴出。它們的方向與圍繞旋轉、坍縮的恆星嬰兒形成的吸積盤垂直。在 NIRcam 影像中，紅色代表噴流與周圍氣體和塵埃碰撞時產生的氫分子和一氧化碳的發射。這幅清晰的影像首次顯示，在蛇尾星雲中探測到的單個外流一般都沿著同一方向排列。這一結果在意料之中，但直到現在韋伯對這個活躍的年輕恆星形成區進行詳細探測後才清晰地呈現出來。較亮的前景恆星呈現出韋伯特有的衍射尖峰。據估計，蛇夫座星雲的距離為 1300 光年，這個宇宙特寫幀的直徑約為 1 光年。
原文：Jets of material blasting from newborn stars, are captured in this James Webb Space Telescope close-up of the Serpens Nebula. The powerful protostellar outflows are bipolar, twin jets spewing in opposite directions. Their directions are perpendicular to accretion disks formed around the spinning, collapsing stellar infants. In the NIRcam image, the reddish color represents emission from molecular hydrogen and carbon monoxide produced as the jets collide with the surrounding gas and dust. The sharp image shows for the first time that individual outflows detected in the Serpens Nebula are generally aligned along the same direction. That result was expected, but has only now come into clear view with Webb's detailed exploration of the active young star-forming region. Brighter foreground stars exhibit Webb's characteristic diffraction spikes. At the Serpens Nebula's estimated distance of 1,300 light-years, this cosmic close-up frame is about 1 light-year across.
※ 本文由萌芽機器人自動轉貼自每日一天文圖（Astronomy Picture of the Day，APOD），原文為英文，正體中文是透過 DeepL 翻譯及 OpenCC 進行自動處理，內容僅供參考，若有任何錯誤之處還請見諒！
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