ngc346的年轻恒星
(原标题: Young Stars of NGC 346)
2022-05-12
浏览次数: 18
NGC 346的大质量恒星寿命很短，但能量很大。该星团位于小麦哲伦星云中最大的恒星形成区，距离大约21万光年。它们的风和辐射在气体和尘埃云中扫出了一个直径约200光年的星际洞穴，引发了恒星的形成，并塑造了该地区密集的内缘。编号为N66的恒星形成区似乎也包含了大量的婴儿恒星。这些婴儿恒星只有300万到500万年的历史，它们的核心还没有燃烧氢，它们散布在嵌入的星团中。在这张假彩色的哈勃太空望远镜图像中，可见光和近红外光被视为蓝色和绿色，而原子氢发射的光是红色的。
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The massive stars of NGC 346 are short lived, but very energetic. The star cluster is embedded in the largest star forming region in the Small Magellanic Cloud, some 210,000 light-years distant. Their winds and radiation sweep out an interstellar cavern in the gas and dust cloud about 200 light-years across, triggering star formation and sculpting the region's dense inner edge. Cataloged as N66, the star forming region also appears to contain a large population of infant stars. A mere 3 to 5 million years old and not yet burning hydrogen in their cores, the infant stars are strewn about the embedded star cluster. In this false-color Hubble Space Telescope image, visible and near-infrared light are seen as blue and green, while light from atomic hydrogen emission is red.