The RMS survey: resolving kinematic distance ambiguities towards a sample of compact H ii regions using H i absorption
The RMS survey: resolving kinematic distance ambiguities towards a sample of compact H ii regions using H i absorption
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DOI：
10.1111/j.1365-2966.2011.20157.x
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发表时间：
2011-11
影响因子：
4.8
通讯作者：
J. Urquhart;M. Hoare;S. Lumsden;R. Oudmaijer;T. Moore;J. Mottram;H. Cooper;M. Mottram;H. C. R. Cass;Mpifr;Leeds;Liverpool John Moores;Exeter
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作者：
J. Urquhart;M. Hoare;S. Lumsden;R. Oudmaijer;T. Moore;J. Mottram;H. Cooper;M. Mottram;H. C. R. Cass;Mpifr;Leeds;Liverpool John Moores;Exeter
我们展示了使用澳大利亚望远镜紧凑型阵列获得的高分辨率Hi数据，以解决来自红色MSX源（RMS）调查的紧凑型Hii区域样本的近/远距离模糊。高分辨率数据与从南部和VLA银河面调查中提取的低分辨率档案Hi数据相辅相成。我们解决了几乎所有105个源的距离模糊，其中连续体足够强，可以分析Hi吸收线结构。这代表了确定总RMS样本距离的又一步，该样本包含1000多个大质量年轻恒星物体和紧凑的Hii区域，是同类样本中最大和最完整的样本。完整的样本将使银河系中大质量恒星形成的分布得到检验。
We present high-resolution Hi data obtained using the Australia Telescope Compact Array to resolve the near/far distance ambiguities towards a sample of compact Hii regions from the Red MSX Source (RMS) survey. The high resolution data are complemented with lower resolution archival Hi data extracted from the Southern and VLA Galactic Plane surveys. We resolve the distance ambiguity for nearly all of the 105 sources where the continuum was strong enough to allow analysis of the Hi absorption line structure. This represents another step in the determination of distances to the total RMS sample, which with over 1,000 massive young stellar objects and compact Hii regions, is the largest and most complete sample of its kind. The full sample will allow the distribution of massive star formation in the Galaxy to be examined.