星际锻造：一个恒星形成模拟
(原标题: STARFORGE: A Star Formation Simulation)
2021-06-23
浏览次数: 34
恒星是如何形成的？大多数形成于位于星系中央盘的巨大分子云。这个过程是由恒星风、喷流、高能星光和先前存在的恒星的超新星爆炸开始、影响和限制的。这段特色视频展示了这些复杂的相互作用，这些相互作用是由STARFORGE模拟的一个质量是太阳20000倍的气体云计算出来的。在延时可视化中，较亮的区域表示气体密度较大，颜色表示气体速度（紫色表示慢，橙色表示快），而圆点表示新形成恒星的位置。在视频开始时，一个跨度约50光年的气体云在自身重力作用下开始凝结。在200万年的时间里，第一颗恒星形成了，而新形成的大质量恒星则释放出令人印象深刻的喷流。模拟在430万年后冻结，然后旋转体积以获得三维视角。关于恒星的形成还有很多未知之处，包括射流在限制随后形成的恒星质量方面的作用。传送门宇宙：随机APOD生成器
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How do stars form? Most form in giant molecular clouds located in the central disk of a galaxy. The process is started, influenced, and limited by the stellar winds, jets, high energy starlight, and supernova explosions of previously existing stars. The featured video shows these complex interactions as computed by the STARFORGE simulation of a gas cloud 20,000 times the mass of our Sun. In the time-lapse visualization, lighter regions indicate denser gas, color encodes the gas speed (purple is slow, orange is fast), while dots indicate the positions of newly formed stars. As the video begins, a gas cloud spanning about 50 light years begins to condense under its own gravity. Within 2 million years, the first stars form, while newly formed massive stars are seen to expel impressive jets. The simulation is frozen after 4.3 million years, and the volume then rotated to gain a three-dimensional perspective. Much remains unknown about star formation, including the effect of the jets in limiting the masses of subsequently formed stars. Portal Universe: Random APOD Generator