论文标题
白矮人合并候选人J005311的风中风变化
Rapid Variability in the Wind from the White Dwarf Merger Candidate J005311
论文作者
论文摘要
我们分析了白矮人合并候选J005311的时间序列光谱，并确认其光谱的独特性质。我们检测到Gvaramadze等人预测的343nm处的额外的广泛发射特征。 （2019; arxiv：1904.00012）型号。将十个光谱与大型双眼望远镜（LBT）进行比较，我们发现强OVI 381.1/383.4NM发射功能的轮廓显着差异。这似乎是由J005311恒星风中的块状产生的迅速转移引起的。这条线的可变性与许多狼射线星中看到的变异性相似。但是，在J005311中，subpeaks的运动速度似乎很高，因为它们可以在不到两个小时内达到16000 km/s。
We analyze time-series spectroscopy of the white dwarf merger candidate J005311 and confirm the unique nature of its optical spectrum. We detect an additional broad emission feature peaking at 343nm that was predicted in the Gvaramadze et al. (2019; arXiv:1904.00012) models. Comparing ten spectra taken with the Large Binocular Telescope (LBT), we find significant variability in the profile of the strong OVI 381.1/383.4nm emission feature. This appears to be caused by rapidly shifting subpeaks generated by clumpiness in the stellar wind of J005311. This line variability is similar to what is seen in many Wolf-Rayet stars. However, in J005311, the rate of motion of the subpeaks appears exceedingly high as they can reach 16000 km/s in less than two hours.
