四边形：猎户座的中心
(原标题: Trapezium: In the Heart of Orion)
2025-08-13
浏览次数: 1487
猎户座的中心是什么？四边形：四颗明亮的恒星，可以在这幅清晰的宇宙肖像的中心附近找到。这些恒星聚集在一个半径约1.5光年的区域内，主宰着密集的猎户座星云星团的核心。来自四边形恒星的紫外线电离辐射，主要来自最亮的猎户座-1 - C，为复杂的恒星形成区域的整个可见光提供了能量。大约300万年前，猎户座星云团在年轻的时候更加紧凑，一项动力学研究表明，早期失控的恒星碰撞可能形成了一个质量超过太阳100倍的黑洞。星团中黑洞的存在可以解释观察到的四边形恒星的高速度。猎户座星云距离地球约1500光年，是距离地球最近的候选黑洞之一。
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What lies in the heart of Orion? Trapezium: four bright stars, that can be found near the center of this sharp cosmic portrait. Gathered within a region about 1.5 light-years in radius, these stars dominate the core of the dense Orion Nebula Star Cluster. Ultraviolet ionizing radiation from the Trapezium stars, mostly from the brightest star Theta-1 Orionis C powers the complex star forming region's entire visible glow. About three million years old, the Orion Nebula Cluster was even more compact in its younger years and a dynamical study indicates that runaway stellar collisions at an earlier age may have formed a black hole with more than 100 times the mass of the Sun. The presence of a black hole within the cluster could explain the observed high velocities of the Trapezium stars. The Orion Nebula's distance of some 1,500 light-years make it one of the closest candidate black holes to Earth.