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arXiv 1205.2010astro-ph.SR
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海山二大爆发

The Great Eruption of Eta Carinae

Kris Davidson, Roberta Humphreys

摘要:

在1838-1858年期间,非常巨大的恒星船底座η成为超新星冒名顶替者的原型:它释放的光几乎和超新星爆炸一样多,并释放出令人印象深刻的质量,但作为一颗恒星幸存下来。基于该事件的光回波光谱,Rest等人得出结论,需要“一种新的物理机制”来解释它,因为流出的气体看起来比理论预期的要冷。这里我们注意到:(1)理论预测的温度比他们引用的要低得多,(2)他们推断的观测值是相当不确定的。因此,到目前为止的分析并没有揭示出观测到的光谱与大爆发及其物理学的大多数先前讨论之间的任何重大矛盾。

英文摘要:

During the years 1838-1858, the very massive star η Carinae became the prototype supernova impostor: it released nearly as much light as a supernova explosion and shed an impressive amount of mass, but survived as a star.1 Based on a light-echo spectrum of that event, Rest et al.2 conclude that "a new physical mechanism" is required to explain it, because the gas outflow appears cooler than theoretical expectations. Here we note that (1) theory predicted a substantially lower temperature than they quoted, and (2) their inferred observational value is quite uncertain. Therefore, analyses so far do not reveal any significant contradiction between the observed spectrum and most previous discussions of the Great Eruption and its physics.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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