远眺金牛分子云

2023年11月23日

Along the Taurus Molecular Cloud
Image Credit & Copyright: Yuexiao Shen, Joe Hua

Explanation: 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.

Tomorrow’s picture: Stereo Jupiter

远眺金牛分子云
影像提供与版权: Yuexiao Shen, Joe Hua

说明: 宇宙以恒星诞生为笔触，创造出这幅用由发射星云、尘埃及暗星云织就的星际画。这幅5度宽的望远镜拼接影像，所呈现的区域位于亮星毕宿五之北、本地泡内壁的金牛分子云一带。在影像的左下角，编录号为Sh2-239的发射星云，拥有内部藏有年轻星体的诸多迹证。此区域与新诞生恒星相关的赫比格-哈罗天体，其标志为受喷流激震的氢气所发出的泛红辐射 。在其右上方，可见到身为金牛T变星原型的金牛T星，而更右方的淡黄星云，名为欣德变星云（NGC 1555）。金牛T星咸认是稚龄不到数百万年，尚处于形成早期阶段的年轻类太阳恒星。

明日的图片: Stereo Jupiter