The 2010 early outburst spectrum of the recurrent nova U Scorpii
The 2010 early outburst spectrum of the recurrent nova U Scorpii
复制标题
复发新星天蝎座 U 的 2010 年早期爆发光谱
DOI：
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发表时间：
2010
期刊：
影响因子：
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通讯作者：
Robert Williams
中科院分区：
文献类型：
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作者：
S. Kafka;Robert Williams
目标。我们给出了最近爆发的快速重现新星U Sco的光谱，它是在最大光亮后24小时内获得的。方法：研究方法。我们使用拉斯坎帕纳斯天文台麦哲伦(克莱)6.5m望远镜上的MAGE摄谱仪拍摄的中分辨率(R∼4000)光谱。结果。该光谱值得注意的是，它缺乏一个低电离的瞬时重元素吸收系统，这一系统在大多数接近最大光强的新星中都能看到。我们认为，这可能是由于内部拉格朗日L1传质占优势，并且在该对象中没有环状气藏。
Aims. We present optical spectra of the fast recurrent nova U Sco during its recent outburst, obtained within 24 h of maximum light. Methods. We use medium resolution (R ∼ 4000) spectra taken with the with the MagE spectrograph on the Magellan (Clay) 6.5 m telescope of the Las Campanas Observatories. Results. The spectrum is notable for its lack of a low ionization transient heavy element absorption system that is visible in the large majority of novae near maximum light. We suggest that this may be due to the dominance of inner Lagrangian L1 mass transfer and the absence of a circumbinary gas reservoir in this object.