美国国家航空航天局NASA每日一图(天文)-2017年7月4日

2017 July 4

Celestial Fireworks: Into Star Cluster Westerlund 2
Visualization Credit: NASA, ESA, Hubble, J. Anderson et al. (STScI); Acknowledgment: The Hubble Heritage Team (STScI/AURA), A. Nota (ESA/STScI), the Westerlund 2 Science Team, and the ESO
Explanation: What if you could go right into a cluster where stars are forming? A one-minute, time-lapse, video visualization of just this has been made with 3D computer modeling of the region surrounding the star cluster Westerlund 2, based on images from the Hubble Space Telescope in visible and infrared light. Westerlund 2 spans about 10 light years across and lies about 20,000 light years distant toward the constellation of the Ship's Keel (Carina). As the illustrative animation begins, the greater Gum 29 nebula fills the screen, with the young cluster of bright stars visible in the center. Stars zip past you as you approach the cluster. Soon your imaginary ship pivots and you pass over light-year long pillars of interstellar gas and dust. Strong winds and radiation from massive young stars destroy all but the densest nearby dust clumps, leaving these pillars in their shadows -- many pointing back toward the cluster center. Last, you pass into the top of the star cluster and survey hundreds of the most massive stars known.

2017年7月4日

焰火:进入星团韦斯特朗2可视化的信用:美国国家航空航天局,欧空局,哈勃·J·安德森等人。(所);确认:哈勃传统团队(STScI/AURA),A。Nota(欧空局/所),韦斯特伦德2号星团的科学团队和经理股票期权

解释:如果你可以直接进入一个星团,恒星正在形成呢?一等一下,时间推移,视频就在这个已经取得了三维可视化计算机模拟周边地区的星团韦斯特朗2,基于图像由哈勃太空望远镜在可见光和红外线。Westerlund 2跨越了大约10光年的距离,距离船的基尔(船)的星座大约有20000光年远。随着演示动画的开始,大的胶29星云充满了屏幕,在中心可见年轻的明亮恒星群。当你接近集群时,星星会在你的周围zip。不久,你想象的飞船就会转动,你会越过光年的星际气体和尘埃的长长的柱子。来自大量年轻恒星的强风和辐射摧毁了周围最密集的尘埃团,使这些柱子在阴影中留下-许多都指向了集群中心。最后,你进入了星团的顶端,调查了数百颗已知的最大恒星。

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