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arXiv 1712.03330astro-ph.GAastro-ph.SR
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44、84和95 GHz Ⅰ类甲醇脉泽的干涉和单碟观测

Interferometric and single-dish observations of 44, 84 and 95 GHz Class I methanol masers

Carolina B. Rodríguez-Garza, Stanley E. Kurtz, Arturo I. Gómez-Ruiz, Peter Hofner, Esteban D. Araya, Sergei V. Kalenskii

摘要:

我们目前的观测大质量恒星形成区域选择的IRAS点源目录。这些观测是用甚大天线阵和大毫米望远镜进行的,目的是寻找I类甲醇脉泽。我们在44 GHz的甲醇脉泽过渡的125个大规模的恒星形成区域的干涉观测; 53的125场显示发射。这些数据使我们能够证明协会,在角秒精度,I类脉泽排放与流出,HII地区和冲击跟踪4.5 $μ$米排放。我们对53个区域中的38个进行了单碟观测,检测到44 GHz脉泽,以寻找84.5,95.1,96.7,107.0和108.8 GHz的甲醇跃迁。我们发现检测率分别为74,55,100,3和45%。我们使用了一个宽波段接收器,它显示了许多其他的谱线,这些谱线在恒星形成区很常见。

英文摘要:

We present observations of massive star-forming regions selected from the IRAS Point Source Catalog. The observations were made with the Very Large Array and the Large Millimeter Telescope to search for Class I methanol masers. We made interferometric observations of 125 massive star-forming regions in the 44 GHz methanol maser transition; 53 of the 125 fields showed emission. The data allow us to demonstrate associations, at arcsecond precision, of the Class I maser emission with outflows, HII regions and shocks traced by 4.5 $μ$m emission. We made single-dish observations toward 38 of 53 regions with 44 GHz masers detected to search for methanol transitions at 84.5, 95.1, 96.7, 107.0, and 108.8 GHz. We find detection rates of 74, 55, 100, 3, and 45%, respectively. We used a wide-band receiver which revealed many other spectral lines that are common in star-forming regions.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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