发射星云、暗星云与尘埃

2022年11月30日

The Light, the Dark, and the Dusty
Image Credit & Copyright: Anthony Quintile

Explanation: This colorful skyscape spans about four full moons across nebula rich starfields along the plane of our Milky Way Galaxy in the royal northern constellation Cepheus. Near the edge of the region’s massive molecular cloud some 2,400 light-years away, bright reddish emission region Sharpless (Sh) 155 is at the center of the frame, also known as the Cave Nebula. About 10 light-years across the cosmic cave’s bright walls of gas are ionized by ultraviolet light from the hot young stars around it. Dusty reflection nebulae, like vdB 155 to the right, and dense obscuring clouds of dust also abound on the interstellar canvas. Astronomical explorations have revealed other dramatic signs of star formation, including the bright reddish fleck of Herbig-Haro (HH) 168. Below and right of center, the Herbig-Haro object emission is generated by energetic jets from a newborn star.

Tomorrow’s picture: pixels in space

发射星云、暗星云与尘埃
图像提供与版权: Anthony Quintile

说明: 这幅色彩缤纷的星空图像，涵盖我们银河系盘面上的仙王座富星场约4个满月宽的区域。位在图像中心，离我们约2,400光年远，座落在此区域大质量分子云边缘的这团明亮泛红发射星云，是名为洞穴星云的夏普利斯（Sh）155。在这个宽约10光年的宇宙洞穴里，气体边墙的明亮辐射，是受到邻近炽热年轻恒星的紫外光之电离与激发。图像里，诸如右缘vdB 155这类的尘埃反射云及致密不透光的尘埃云，密布在这幅星际画布里。此外，天文观测还找到其他恒星诞生的迹证，包括图像中下方的赫比格-哈罗天体HH 168。发出这片泛红光斑的赫比格-哈罗天体，是由新诞生恒星的高能喷流所产生的。

明日的图片: pixels in space