论文标题
黑暗空间中的神秘戒指？
A Mysterious Ring in Dark Space?
论文作者
论文摘要
我们报告了在G频段中发现低表面亮度（27.42 mag arcsec^（-2））星云，该状态在北京 - 阿里佐纳天空调查（Bass）中具有类似环形的形状。在从远离紫外线到远红外的多播数据中发现了阳性检测，除了贝斯和W1的Z频段，W1的Z频段，W2的W2。根据红外天文卫星（IRAS）100微米强度和HI柱密度，估计了星云E（B -V）〜0.02 mag的红色。借助Pan-Starrs 1的3D红色地图，两个微米的所有天空调查，盖亚（Gaia），距离地球约500 pc的星云的距离得出了。这样的低表面亮度星云可以通过弥漫性银河光来解释其能量，可以解释红外卷心的光学对应物，这是由IRA在30年前检测到的。戒指状结构可能是进化的行星星云的最终阶段，而中央白色矮人恒星由于不清楚的原因而被从星云中弹出。另一方面，环结构是两个紧密丝的叠加可能是另一个合理的解释。考虑到距离测量中缺乏光谱数据和不确定性，需要通过未来的观察来检查这些解释。
We report the discovery of a low-surface-brightness (27.42 mag arcsec^(-2) in g band) nebula, which has a ring-like shape in the Beijing-Arizona Sky Survey (BASS). Positive detections have been found in multiband data from far ultraviolet to far infrared, except the z band from BASS and W1, W2 from the Wide-field Infrared Survey Explorer. The reddening of the nebula E(B - V) ~ 0.02 mag is estimated from Infrared Astronomical Satellite (IRAS) 100 micron intensity and HI column density. With the help of the 3D reddening map from Pan-STARRS 1, the Two Micron All Sky Survey, and Gaia, the distance to the nebula of about 500 pc from Earth is derived. Such a low-surface-brightness nebula whose energy can be interpreted by the diffuse Galactic light could account for the optical counterpart of the infrared cirrus, which was detected by IRAS more than 30 yr ago. The ring-like structure might be the ultimate phase of an evolved planetary nebula, while the central white dwarf star has been ejected from the nebula for an unclear reason. On the other hand, the ring structure being a superposition of two close filaments might be another reasonable explanation. Considering the lack of spectroscopic data and uncertainty in the distance measurement, these interpretations need to be checked by future observations.
