沃尔夫-拉叶WR 60恒星的推定星云：一个错误识别和重新分类为新超新星遗迹G310 .5+0.8的案例
The putative nebula of the Wolf-Rayet WR 60 star: A case of mistaken identity and reclassification as a new supernova remnant G310.5+0.8
摘要：
本文给出了与沃尔夫-拉叶星WR 60有关的星云壳层的窄带AAO/UKST HAlpha图像和中低分辨率光谱。我们还提出了第一次识别这种壳在无线电制度在843 MHz和4850 MHz的悉尼大学莫隆格洛巡天（SUMSS），并从帕克斯-麻省理工学院-NRAO（PMN）调查分别。这种无线电发射紧跟在光发射之后。壳层的光谱显示出典型的激波激发特征，这种特征有时见于沃尔夫-拉叶恒星喷出物，但也常见于超新星遗迹。然而，一个关键的发现是，WR 60恒星实际上并不像以前所说的那样，在假定的弧形星云喷出物的几何中心附近。这是由于一个错误的位置识别的明星在文献中，我们现在纠正。这一新的发现对该星云与WR 60的任何关联提出了严重的质疑，因为这样的星云通常都很好地集中在WR恒星本身。我们现在提出，这一事实结合我们新的光谱，更深的HAlpha成像和新发现的射电结构实际上意味着WR 60星云应该重新分类为一个新的超新星遗迹，我们指定为G310.5+0.8。
英文摘要：
We present narrow band AAO/UKST HAlpha images and medium and low resolution optical spectra of a nebula shell putatively associated with the Wolf-Rayet star WR 60. We also present the first identification of this shell in the radio regime at 843 MHz and at 4850 MHz from the Sydney University Molonglo Sky Survey (SUMSS), and from the Parkes-MIT-NRAO (PMN) survey respectively. This radio emission closely follows the optical emission. The optical spectra from the shell exhibits the typical shock excitation signatures sometimes seen in Wolf-Rayet stellar ejecta but also common to supernova remnants. A key finding however, is that the WR 60 star, is not, in fact, anywhere near the geometrical centre of the putative arcuate nebula ejecta as had been previously stated. This was due to an erroneous positional identification for the star in the literature which we now correct. This new identification calls into serious question any association of the nebula with WR 60 as such nebula are usually quite well centred on the WR stars themselves. We now propose that this fact combined with our new optical spectra, deeper HAlpha imaging and newly identified radio structures actually imply that the WR 60 nebula should be reclassified as an unassociated new supernova remnant which we designate G310.5+0.8.
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