NGC 1499：加利福尼亚星云
(原标题: NGC 1499: The California Nebula)
2022-10-22
浏览次数: 17
穿过螺旋状银河系的猎户座旋臂，这片宇宙云偶然地与美国西海岸加利福尼亚的轮廓相呼应。我们的太阳也位于银河系的猎户座臂内，距离加利福尼亚星云只有大约1500光年。这个经典的发射星云也被称为NGC 1499，长约100光年。加利福尼亚星云闪耀着红色的光芒，这是氢原子与丢失已久的电子重新结合的特征。电子被剥离，被高能星光电离。星云右边明亮炽热的仙后座星（Xi Persei）最有可能提供高能星光，使星云气体电离。天体摄影师的热门目标，这张深图像显示了发光的星云，模糊的尘埃，以及3度宽视场内的恒星。加利福尼亚星云位于英仙座方向，离昴宿星团不远。
查看原文解释
Drifting through the Orion Arm of the spiral Milky Way Galaxy, this cosmic cloud by chance echoes the outline of California on the west coast of the United States. Our own Sun also lies within the Milky Way's Orion Arm, only about 1,500 light-years from the California Nebula. Also known as NGC 1499, the classic emission nebula is around 100 light-years long. The California Nebula shines with the telltale reddish glow characteristic of hydrogen atoms recombining with long lost electrons. The electrons have been stripped away, ionized by energetic starlight. Most likely providing the energetic starlight that ionizes much of the nebular gas is the bright, hot star Xi Persei just to the right of the nebula. A popular target for astrophotographers, this deep image reveals the glowing nebula, obscuring dust, and stars across a 3 degree wide field of view. The California nebula lies toward the constellation Perseus, not far from the Pleiades.
© this cosmic cloud