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恒星如何吞食行星

2025-04-12 22:49 by 时间回旋

韦伯太空望远镜的新发现颠覆了对恒星吞噬行星的理解,原本以为恒星因膨胀把行星吞了进去,但现在新的观测发现,实际上是行星的轨道随时间推移而缩小,慢慢地靠近恒星,直至其完全被吞噬。韦伯观测的恒星位于银河系内,距离地球约 12,000 光年,这次增亮事件正式名称为 ZTF SLRN-2020,最早是由帕洛玛天文台的兹威基巡天计画(Zwicky. Transient Facility)观测到的一个闪光事件。被吞掉的行星原本和木星差不多大,但它的轨道非常靠近恒星,甚至比水星轨道还要近。经过数百万年,它的轨道越来越小,离恒星越来越近,最后被吸进去。研究人员表示这颗行星开始接触到恒星大气层,从那一刻起,它就开始以更快的速度往内掉。当行星最终撞进恒星时,行星会将恒星外层的气体吹散,随着它的膨胀和冷却,气体中的重元素在接下来的一年凝结成冷尘埃。

The Astrophysical Journal:Revealing a Main-sequence Star that Consumed a Planet with JWST
天文館:韋伯揭示行星被恆星吞噬的真相

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恒星如何吞食行星

2025-04-12 22:49 by 时间回旋

韦伯太空望远镜的新发现颠覆了对恒星吞噬行星的理解,原本以为恒星因膨胀把行星吞了进去,但现在新的观测发现,实际上是行星的轨道随时间推移而缩小,慢慢地靠近恒星,直至其完全被吞噬。韦伯观测的恒星位于银河系内,距离地球约 12,000 光年,这次增亮事件正式名称为 ZTF SLRN-2020,最早是由帕洛玛天文台的兹威基巡天计画(Zwicky. Transient Facility)观测到的一个闪光事件。被吞掉的行星原本和木星差不多大,但它的轨道非常靠近恒星,甚至比水星轨道还要近。经过数百万年,它的轨道越来越小,离恒星越来越近,最后被吸进去。研究人员表示这颗行星开始接触到恒星大气层,从那一刻起,它就开始以更快的速度往内掉。当行星最终撞进恒星时,行星会将恒星外层的气体吹散,随着它的膨胀和冷却,气体中的重元素在接下来的一年凝结成冷尘埃。

The Astrophysical Journal:Revealing a Main-sequence Star that Consumed a Planet with JWST
天文館:韋伯揭示行星被恆星吞噬的真相

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