鹰状星云中的恒星形成
(原标题: Star Formation in the Eagle Nebula)
2022-03-14
浏览次数: 22
恒星是在哪里形成的？在鹰状星云（M16）这个巨大的气体和尘埃柱的末端，一个被称为“EGGs”的恒星形成区域被发现了。EGGs是蒸发气体球体的简称，是由大部分氢分子气体组成的密集区域，这些气体在引力作用下破碎并坍缩形成恒星。这些新恒星中最热、最亮的恒星发出的光加热了恒星柱的末端，导致气体和尘埃进一步蒸发，从而暴露出更多的EGGs和更多的年轻恒星。这张特色图片是2014年用绕地球轨道运行的哈勃太空望远镜拍摄的30多个小时的照片，由阿根廷经验丰富的志愿者用现代软件进行数字处理。新生恒星将在未来10万年左右的时间里逐渐摧毁它们的诞生支柱——如果超新星没有首先摧毁它们的话。
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Where do stars form? One place, star forming regions known as "EGGs", are being uncovered at the end of this giant pillar of gas and dust in the Eagle Nebula (M16). Short for evaporating gaseous globules, EGGs are dense regions of mostly molecular hydrogen gas that fragment and gravitationally collapse to form stars. Light from the hottest and brightest of these new stars heats the end of the pillar and causes further evaporation of gas and dust -- revealing yet more EGGs and more young stars. This featured picture was created from exposures spanning over 30 hours with the Earth-orbiting Hubble Space Telescope in 2014, and digitally processed with modern software by experienced volunteers in Argentina. Newborn stars will gradually destroy their birth pillars over the next 100,000 years or so -- if a supernova doesn't destroy them first.