KPD 0005+5106周围O VI发射星云的新分析
A New Analysis of the O VI Emitting Nebula around KPD 0005+5106
摘要：
本文报道了用远紫外光谱探测器观测到的氦白矮星KPD 0005+5106周围的O VI 1032辐射。以前公布的数据，重新处理与更新版本的校准管道，包括随着新的观察。最近将白矮星的有效温度向上修正到200，000 K，促使我们重新分析所有数据。我们将观测结果与光电离模型进行了比较，发现O VI星云的密度约为10 cm^-3，恒星通量在撞击到星云内表面时必定衰减了约90%。我们推断，这种衰减是由于拱星物质喷射的KPD 0005+5106在其演化的早期。
英文摘要：
We present observations of O VI 1032 emission around the helium white dwarf KPD 0005+5106 obtained with the Far Ultraviolet Spectroscopic Explorer. Previously published data, reprocessed with an updated version of the calibration pipeline, are included along with new observations. The recent upward revision of the white dwarf's effective temperature to 200,000 K has motivated us to re-analyze all the data. We compare observations with photoionization models and find that the density of the O VI nebula is about 10 cm^-3, and that the stellar flux must be attenuated by about 90% by the time it impinges on the inner face of the nebula. We infer that this attenuation is due to circumstellar material ejected by KPD 0005+5106 earlier in its evolution.
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