The environment of the Wolf-Rayet (WR) star WR 130 has been studied using the 21 cm H I line and radio continuum data at 408 and 1420 MHz obtained with the Dominion Radio Astrophysical Observatory (DRAO) Synthesis Telescope. In addition, the H110α recombination line and 21 cm H I line were observed using the Very Large Array in the DnC and D configurations. The Sharpless H II region, Sh 98 (size ~15'), and two OB stars are observed near the Wolf-Rayet star position. An extended ring-shaped structure (G68.1+1.1) of size ~20' is observed in the radio continuum and infrared data. Of four compact radio sources seen superposed on the ring, one is an H II region of size ~3' (G68.14+0.92), while the others are probably extragalactic. The spectral index (Sν ∝ να) of G68.1+1.1 is α = 0.0 ± 0.1. The thermal nature of G68.1+1.1 is confirmed by an analysis of the correlation between the brightness temperature at 21 cm and the brightness at 60 μm, as observed with IRAS. The DRAO H I data show an H I bubble in the velocity range -12 to 1 km s-1. The most striking characteristic of the H I cavity is the excellent correlation with the radio continuum ring. The WR star is not at the center of the ring, but in the dense border to the east. This eccentric position can be explained by a combination of a high spatial velocity for the star and projection effects. The possible contribution of the OB stars present in the area is also considered. From our H110α observations, together with other recombination lines observed in the area, we deduce a distance of 12 kpc for the compact H II region G68.14+0.92 and 5 kpc for G68.1+1.1. We conclude that G68.1+1.1 is the radio counterpart of the optical H II region Sh 98, while G68.14+0.92 is a chance superposition of a much more distant source. The ionized mass of the ring is estimated at ~3000 M⊙ and the rms electron density at ~3 cm-3, assuming a homogeneous distribution. A missing H I mass of 500 M⊙ is obtained for the cavity and an excess H I mass of 1500 M⊙ for the shell.
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机译：使用Dominion射电天文台（DRAO）综合望远镜获得的21 cm H I线和408和1420 MHz的射电连续数据，研究了Wolf-Rayet（WR）星WR 130的环境。此外，在DnC和D构型中使用超大型阵列观察到了H110α重组株系和21 cm H I株系。在Wolf-Rayet星的位置附近观察到了Sharpless H II区，Sh 98（尺寸约为15'）和两颗OB星。在无线电连续体和红外数据中观察到尺寸为〜20'的扩展环形结构（G68.1 + 1.1）。在环上看到的四个紧凑型无线电源中，一个是H II区域，大小约为〜3'（G68.14 + 0.92），而另一些则可能是银河系外的区域。 G68.1 + 1.1的光谱指数（Sνννα）为α= 0.0±0.1。如通过IRAS观察到的，通过分析21cm的亮度温度和60μm的亮度之间的相关性来确认G68.1 + 1.1的热性质。 DRAO H I数据显示速度范围为-12至1 km s-1的H I气泡。 H I腔最显着的特征是与无线电连续环的良好相关性。 WR恒星不在环的中心，而是在东方的密集边界。偏心位置可以通过星空的高空速和投影效果的组合来解释。还考虑了该地区存在的OB星的可能贡献。根据我们对H110α的观察，以及在该区域观察到的其他重组线，我们得出紧凑的H II区G68.14 + 0.92的距离为12 kpc，对于G68.1 + 1.1的距离为5 kpc。我们得出的结论是，G68.1 + 1.1是光学H II区域Sh 98的无线电对应物，而G68.14 + 0.92是更遥远的源的机会叠加。假设均匀分布，则环的电离质量估计为〜3000M⊙，均方根电子密度为〜3 cm-3。空腔的H I质量为500 M missing，壳体的H I质量为1500M⊙。
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