AM1054：恒星在星系碰撞中形成
(原标题: AM1054: Stars Form as Galaxies Collide)
2024-02-20
浏览次数: 11
当星系碰撞时，有多少恒星诞生？对于AM1054-325，在哈勃太空望远镜最近发布的一张图片中，答案是数百万。不是像星系AM1054-325和附近的星系相互环绕那样，恒星被毁灭，而是它们的引力和运动点燃了恒星的形成。由于其他星系的引力作用，从AM1054-325的淡黄色天体中伸展出来的气体碎片中，恒星形成的速度很快。新生恒星周围的氢气发出粉红色的光。明亮的婴儿恒星发出蓝色的光芒，聚集在一起，形成成千上万颗恒星的致密托儿所。AM1054-325拥有超过100个这样的深蓝点状星团，有些看起来像一串珍珠。分析紫外线有助于确定这些恒星中的大多数年龄不到1000万年：恒星婴儿。这些托儿所中的许多可能成长为球状星团，而底部尖端的一束年轻恒星甚至可能分离并形成一个小星系。
查看原文解释
When galaxies collide, how many stars are born? For AM1054-325, featured here in a recently released image by the Hubble Space Telescope, the answer is millions. Instead of stars being destroyed as galaxy AM1054-325 and a nearby galaxy circle each other, their gravity and motion has ignited stellar creation. Star formation occurs rapidly in the gaseous debris stretching from AM1054-325’s yellowish body due to the other galaxy’s gravitational pull. Hydrogen gas surrounding newborn stars glows pink. Bright infant stars shine blue and cluster together in compact nurseries of thousands to millions of stars. AM1054-325 possesses over 100 of these intense-blue, dot-like star clusters, some appearing like a string of pearls. Analyzing ultraviolet light helped determine that most of these stars are less than 10 million years old: stellar babies. Many of these nurseries may grow up to be globular star clusters, while the bundle of young stars at the bottom tip may even detach and form a small galaxy.