哈勃望远镜一瞥:躁动不安的幼年恒星

加入我们的科学爱好者社区!

图片来源:NASA/ESA哈勃太空望远镜

就像让父母整夜难眠的人类新生儿一样,恒星婴儿也可以随心所欲地塑造其母体气体云。根据美国宇航局哈勃太空望远镜对附近星系大麦哲伦星云中一个恒星形成区域的新观测,来自巨大、超亮的新生恒星的强烈辐射和强劲星风塑造了它们的环境,在它们的原始星云N83B中雕刻出一个巨大的空腔。

在右侧的图像中,这些大质量恒星正如它们从气体“子宫”中诞生时所见。(这种观测机会非常罕见,因为这些重量级的新生恒星成熟迅速,并且它们的大部分幼年时期都隐藏在尘埃中。)特别令人感兴趣的是星云中心的一颗恒星,就在最亮区域的下方,它强烈的光芒和狂暴的星风似乎已经驱散了周围的气体,形成了一个球形空洞,这个空洞可能只有3万年的历史——以天文标准来看,这相当年轻。星云中相邻的恒星——包括一颗质量是太阳45倍的恒星——都更年轻。中心恒星的强劲星风可能触发了它们的形成。


关于支持科学新闻报道

如果您喜欢这篇文章,请考虑通过以下方式支持我们屡获殊荣的新闻报道: 订阅。通过购买订阅,您将帮助确保未来继续出现关于塑造我们当今世界的发现和思想的具有影响力的报道。


到目前为止,已经在N83B中探测到大约20颗明亮的年轻恒星。但其他恒星可能也存在于那里以及大麦哲伦星云的其他地方,在宇宙尘埃的面纱后踢打和尖叫。

Kate Wong is an award-winning science writer and senior editor at 大众科学 focused on evolution, ecology, anthropology, archaeology, paleontology and animal behavior. She is fascinated by human origins, which she has covered for more than 25 years. Recently she has become obsessed with birds. Her reporting has taken her to caves in France and Croatia that Neandertals once called home, to the shores of Kenya's Lake Turkana in search of the oldest stone tools in the world, to Madagascar on an expedition to unearth ancient mammals and dinosaurs, to the icy waters of Antarctica, where humpback whales feast on krill, and on a "Big Day" race around the state of Connecticut to find as many bird species as possible in 24 hours. Kate is co-author, with Donald Johanson, of Lucy's Legacy: The Quest for Human Origins. She holds a bachelor of science degree in biological anthropology and zoology from the University of Michigan. Follow Wong on X (formerly Twitter) @katewong

More by Kate Wong
© . All rights reserved.