狼蛛区
(原标题: The Tarantula Zone)
2022-09-16
浏览次数: 14
狼蛛星云，也被称为剑鱼座30号，直径超过一千光年，是一个巨大的恒星形成区域，位于附近的卫星星系大麦哲伦星云内。它距离我们大约18万光年，是整个本星系群中已知的最大、最猛烈的恒星形成区。这张壮观的图片是由大型太空和地面望远镜拍摄的图像数据组合而成。在狼蛛星云（NGC 2070）内部，来自编号为R136的年轻大质量恒星星团的强烈辐射、恒星风和超新星冲击激发了星云的光芒，形成了蜘蛛状的细丝。在狼蛛星云周围是其他恒星形成区域，有年轻的星团、细丝和爆裂的气泡状云。事实上，这幅图的右下方包含了现代距离我们最近的超新星SN 1987A的位置。丰富的视野跨度约为2度或4个满月，位于南部的多拉多星座。但如果狼蛛星云离我们更近，比如1500光年远，就像形成猎户座星云的银河系恒星一样，它将占据半个天空。
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The Tarantula Nebula, also known as 30 Doradus, is more than a thousand light-years in diameter, a giant star forming region within nearby satellite galaxy the Large Magellanic Cloud. About 180 thousand light-years away, it's the largest, most violent star forming region known in the whole Local Group of galaxies. The cosmic arachnid sprawls across this magnificent view, an assembly of image data from large space- and ground-based telescopes. Within the Tarantula (NGC 2070), intense radiation, stellar winds, and supernova shocks from the central young cluster of massive stars cataloged as R136 energize the nebular glow and shape the spidery filaments. Around the Tarantula are other star forming regions with young star clusters, filaments, and blown-out bubble-shaped clouds. In fact, the frame includes the site of the closest supernova in modern times, SN 1987A, at lower right. The rich field of view spans about 2 degrees or 4 full moons, in the southern constellation Dorado. But were the Tarantula Nebula closer, say 1,500 light-years distant like the Milky Way's own star forming Orion Nebula, it would take up half the sky.
© Robert Gendler