A SMOKING GUN IN THE CARINA NEBULA
A SMOKING GUN IN THE CARINA NEBULA
复制标题
船底座星云中确凿的证据
DOI：
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发表时间：
2009
期刊：
影响因子：
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通讯作者：
Y. Chu
中科院分区：
文献类型：
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作者：
K. Hamaguchi;M. Corcoran;Y. Ezoe;L. Townsley;P. Broos;R. Gruendl;K. Vaidya;S. White;T. Strohmayer;R. Petre;Y. Chu
船底座星云是银河系中最年轻、最活跃的大质量星星形成地之一。在这个星云中，我们发现了一个明亮的X射线源，它已经持续了2030年。软X射线光谱与kT <$128 eV的黑体辐射一致，并有轻微的消光，在近红外和中红外波长没有对应物，表明它是一颗106岁的中子星星，位于船底座星云。目前的星星形成理论并不认为船底座星云中的中子星星和大质量恒星的祖先，特别是η Car，是同时代的。这一结果表明船底座星云至少经历了两次大质量星星形成的主要事件。这颗中子星星可能是在多个波长中看到的高能活动残留物的原因。
The Carina Nebula is one of the youngest, most active sites of massive star formation in our Galaxy. In this nebula, we have discovered a bright X-ray source that has persisted for ∼30 years. The soft X-ray spectrum, consistent with kT ∼ 128 eV blackbody radiation with mild extinction, and no counterpart in the near- and mid-infrared wavelengths indicates that it is a ∼106 year old neutron star housed in the Carina Nebula. Current star formation theory does not suggest that the progenitors of the neutron star and massive stars in the Carina Nebula, in particular η Car, are coeval. This result suggests that the Carina Nebula experienced at least two major episodes of massive star formation. The neutron star may be responsible for remnants of high-energy activity seen in multiple wavelengths.