沿着金牛座分子云
(原标题: Along the Taurus Molecular Cloud)
2023-11-23
浏览次数: 18
恒星形成的宇宙刷构成了这幅由发射物、尘埃和暗星云组成的星际画布。这是一张5度宽的望远镜拼接图，它描绘了天空中明亮的毕宿五恒星以北的一个区域，位于金牛座分子云附近气泡的内壁。在左下方，编号为Sh2-239的发射物显示了嵌入年轻恒星物体的迹象。该区域的赫比格-哈罗天体是与新生恒星相关的星云，其特征是受到冲击的氢气发出的红色喷流。右上方是金牛座T变星，它是金牛座T变星的原型，旁边是一个黄色的星云，历史上被称为Hind变星云（NGC 1555）。金牛座T星现在被普遍认为是年轻的，年龄不到几百万年，类似太阳的恒星仍处于形成的早期阶段。
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The cosmic brush of star formation composed this interstellar canvas of emission, dust, and dark nebulae. A 5 degree wide telescopic mosaic, it frames a region found north of bright star Aldebaran on the sky, at an inner wall of the local bubble along the Taurus molecular cloud. At lower left, emission cataloged as Sh2-239 shows signs of embedded young stellar objects. The region's Herbig-Haro objects, nebulosities associated with newly born stars, are marked by tell-tale reddish jets of shocked hydrogen gas. Above and right T Tauri, the prototype of the class of T Tauri variable stars, is next to a yellowish nebula historically known as Hind's Variable Nebula (NGC 1555). T Tauri stars are now generally recognized as young, less than a few million years old, sun-like stars still in the early stages of formation.
© Yuexiao Shen