We report the results of a pilot program for a Green Bank Telescope MUSTANG-2 Galactic Plane survey at 3 mm (90 GHz), MGPS90. The survey achieves a typical 1 σ depth of 1–2 mJy beam −1 with a 9″ beam. We describe the survey parameters, quality assessment process, cataloging, and comparison with other data sets. We have identified 709 sources over seven observed fields selecting some of the most prominent millimeter-bright regions between 0deg < ℓ < 50 deg (total area ≈7.5 deg 2 ). The majority of these sources have counterparts at other wavelengths. By applying flux selection criteria to these sources, we successfully recovered several known hypercompact H ii (HCH ii ) regions but did not confirm any new ones. We identify 126 sources that have mm-wavelength counterparts but do not have cm-wavelength counterparts and are therefore candidate HCH ii regions; of these, ...

中文翻译：

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MUSTANG银河平面调查（MGPS90）飞行员

我们报告了在3毫米（90 GHz）的MGPS90上的绿岸望远镜MUSTANG-2银河平面调查的试验计划的结果。测量获得了9“光束，典型的1σ深度为1-2 mJy光束-1。我们描述了调查参数，质量评估过程，分类以及与其他数据集的比较。我们已经确定了七个观测场中的709个震源，它们选择了0deg <ℓ<50 deg（总面积≈7.5deg 2）之间最突出的毫米波明亮区域。这些光源中的大多数具有其他波长的对应光源。通过对这些源应用通量选择标准，我们成功地恢复了几个已知的超紧凑H ii（HCH ii）区域，但未确认任何新的区域。我们确定了126个具有毫米波长对应物但没有厘米波长对应物的源，因此它们是HCH ii候选区域。这些， ...