HD 61005的天气层
(原标题: The Astrosphere of HD 61005)
2026-03-06
浏览次数: 1652
年轻的星星会吹泡泡吗？大图显示了智利塞罗·托洛洛美洲天文台观测到的恒星场，插图突出显示了HD 61005，一颗类似太阳的恒星，距离我们只有120光年。它比太阳年轻得多，只有大约1亿年的历史，它吹出一种快速而密集的恒星风，把周围较冷的尘埃和气体推出去，形成一个被称为天气圈的气泡。钱德拉x射线天文台探测到这个星爆气泡，它的直径大约是地球-太阳距离的200倍。我们的太阳也有一个气泡，叫做日球层，它保护行星免受宇宙辐射。插图中还显示了哈勃望远镜观测到的恒星形成后留下的碎片。这些碎片看起来像翅膀，给了这颗恒星一个绰号：飞蛾。
查看原文解释
Do young stars blow bubbles? The larger view shows a stellar field observed with the Cerro Tololo Inter-American Observatory in Chile, and the inset highlights HD 61005, a star like our Sun, only 120 light-years away. Much younger than the Sun, at just about 100 million years old, it blows a fast and dense stellar wind that pushes out the cooler dust and gas that surrounds it, forming a bubble called an astrosphere. The star-blown bubble was detected with the Chandra X-ray Observatory, and it has a diameter roughly 200 times the Earth-Sun distance. Our Sun has a bubble too, called the heliosphere, which protects the planets from cosmic radiation. Also shown in the inset is debris left behind from star formation, observed by Hubble. The debris appears as wings, giving the star its nickname: the Moth.