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The Rosette Nebula from DECam
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每日一天文图(APOD)展示了由暗能量相机(DECam)拍摄的玫瑰星云的壮丽景象。这张图片捕捉了NGC 2237,一个壮观的发射星云,以及其内部的年轻恒星团NGC 2244。这些恒星的恒星风正在清除星云中心的空洞,而来自恒星的紫外线则使周围的星云发光。玫瑰星云横跨约100光年,距离地球约5000光年,位于麒麟座方向,即使使用小型望远镜也能观测到。

✨ 玫瑰星云(NGC 2237)是一幅由DECam拍摄的引人注目的图像,DECam位于智利的NSF Cerro Tololo Inter-American天文台的Blanco 4米望远镜上。

🌟 在玫瑰星云内部,存在着一个名为NGC 2244的年轻恒星团。这些恒星大约在四百万年前由星云物质形成。

💨 这些年轻恒星的恒星风正在清除星云中心的空洞,而周围的尘埃和热气体则起到隔热作用。来自这些热恒星的紫外线导致周围的星云发光。

🔭 玫瑰星云横跨约100光年,距离地球约5000光年。它位于麒麟座方向,可以使用小型望远镜进行观测。

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2025 July 16

The Rosette Nebula from DECam
Image Credit: CTIO, NOIRLab, DOE, NSF, AURA; Processing: T. A. Rector (U. Alaska Anchorage), D. de Martin (NSF’s NOIRLab) & M. Zamani

Explanation: Would theRosette Nebula by any othername look as sweet?The bland New General Catalogdesignation of NGC 2237 doesn't appear to diminish the appearance of this flowery emission nebula, as captured by the Dark Energy Camera (DECam) on the Blanco 4-meter telescope at the NSF's Cerro Tololo Inter-American Observatory in Chile. Inside the nebula lies anopen clusterof bright young stars designatedNGC 2244.These starsformed about four million years ago from the nebularmaterial and theirstellar winds are clearing a hole in the nebula's center,insulated by a layer of dust and hot gas.Ultraviolet light from thehot cluster stars causes the surrounding nebula toglow.The Rosette Nebula spans about 100light-years across, liesabout 5000 light-years away,and can be seen with a small telescope towards the constellation ofthe Unicorn(Monoceros).

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