Copyright:László Francsics
中文翻譯:
在這幅銳利的宇宙肖像的中心，位於獵戶座星雲的心臟地帶，有四顆熱的巨大恆星被稱為Trapezium。這些恆星緊密聚集在約1.5光年的範圍內，主導著密集獵戶座星雲星團的核心。來自Trapezium恆星的紫外線電離輻射，主要來自最亮的恆星Theta-1 Orionis C，為這個複雜的恆星形成區域提供了整個可見光的冠冕。獵戶座星雲星團大約有三百萬年的歷史，年輕時期更為緊湊，動力學研究顯示，早期可能由於恆星之間的碰撞形成了一個質量超過太陽100倍的黑洞。該黑洞的存在可能解釋了Trapezium恆星的高速度。獵戶座星雲距離地球約1500光年，將可能成為已知最接近地球的黑洞。
#獵戶座星雲 #Trapezium #Theta1OrionisC #宇宙探索 #黑洞 #天文學 #星際旅行 #太空奧秘 #恆星形成 #光的奧秘
原文:
Near the center of this sharp cosmic portrait, at the heart of the Orion Nebula, are four hot, massive stars known as the Trapezium. Tightly gathered within a region about 1.5 light-years in radius, they 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 would make it the closest known black hole to planet Earth.
來源:NASA每日圖片
