论文标题
恒星形成的全球视图：Glostar银河飞机调查V. 6.7 GHz甲醇Maser目录
A Global View on Star Formation: The GLOSTAR Galactic Plane Survey V. 6.7 GHz Methanol Maser Catalogue
论文作者
论文摘要
II类甲醇（Ch $ _ {3} $ OH）MASERS是最近高质量星形成（HMSF）的最清晰路标之一。一个完整的目录概述了星系中恒星形成的分布，年轻的恒星形成核的数量及其环境的物理条件。全球关于恒星形成（GLOSTAR）调查的视图，这是无线电制度中的一项盲目调查，绘制了无线电连续体中的银河中部平面，6.7 GHz甲醇管线，4.8 GHz甲醛阵列，以及几个无线电重组线。我们使用来自非常大数组（VLA）的D-Configuration的数据进行了6.7 GHz Ch $ _ {3} $ OH MASER过渡的观察结果的分析。我们分析了从$ -2^{\ circ} <l <60^{\ circ} $的数据涵盖银河纵向的数据和$ | \ textit {b} | <1^{\ circ} $的银河纬度。我们总共检测到554个甲醇masers，其中84个是新的，它们的位置，速度成分和集成通量分类。由于$ \ sim $ 18 mjy beam $^{ - 1} $的典型噪声水平，这是迄今为止对甲醇masers的最敏感的无偏甲醇调查。我们搜索尘埃连续体和无线电连续性关联，发现97％的来源与灰尘相关，而12％与无线电连续发射有关。
Class II methanol (CH$_{3}$OH) masers are amongst the clearest signposts of recent high-mass star formation (HMSF). A complete catalogue outlines the distribution of star formation in the Galaxy, the number of young star-forming cores, and the physical conditions of their environment. The Global View on Star Formation (GLOSTAR) survey, which is a blind survey in the radio regime of 4$-$8 GHz, maps the Galactic mid-plane in the radio continuum, 6.7 GHz methanol line, the 4.8 GHz formaldehyde line, and several radio recombination lines. We present the analysis of the observations of the 6.7 GHz CH$_{3}$OH maser transition using data from the D-configuration of the Very Large Array (VLA). We analyse the data covering Galactic longitudes from $-2^{\circ}< l <60^{\circ}$ and Galactic latitudes of $|\textit{b}|<1^{\circ}$. We detect a total of 554 methanol masers, out of which 84 are new, and catalogue their positions, velocity components, and integrated fluxes. With a typical noise level of $\sim$18 mJy beam$^{-1}$, this is the most sensitive unbiased methanol survey for methanol masers to date. We search for dust continuum and radio continuum associations, and find that 97% of the sources are associated with dust, and 12% are associated with radio continuum emission.
