研究人员发现2000光年以外的巨型新恒星 | BBC
英语听力, 英语阅读 • 2020-06-07 11:53 PM

研究人员发现2000光年以外的巨型新恒星 | BBC

New star discovered
研究人员发现2000光年以外的巨型新恒星

The new star is what astronomers call a 'white dwarf'. It's what stars like the Sun become at the end of their lives when they've used up all their nuclear fuel.

这颗新星被天文学家称为 “白矮星”。它是像太阳这样的恒星在它们生命的尽头，耗尽所有核燃料后演化成的星体。

The star loses most of its atmosphere, leaving a very hot core. The heavier atoms in the atmosphere sink and the lighter ones remain at the surface. Some white dwarves have almost pure hydrogen or helium atmospheres, but this star has an atmosphere unusually high in the heavier element, carbon.

这颗恒星失去了大部分大气层，留下了一个炽热的核。大气中较重的原子下沉，而较轻的原子留在表面。一些白矮星的大气中几乎只有纯氢或氦，但这颗星的大气中重元素碳的含量异常高。

Computer modelling indicates it could have been created by the merger of two such stars. This suggests that such occurrences might be more common than previously thought.

计算机模型显示，这颗星可能由两颗类似的恒星合并而成。这表明，这种星体存在的数量可能比人们之前认为的更普遍。

词汇
astronomers
天文学家
nuclear fuel
核能燃料
atmosphere
大气层
atoms
原子
element
化学元素
computer modelling
计算机模型
merger

合并

occurrences
事物存在的数量

 

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