射电氨中面测量(RAMPS)试验性测量
The Radio Ammonia Mid-Plane Survey (RAMPS) Pilot Survey
摘要:
射电氨中面巡天(RAMPS)是一个分子线巡天,目的是使用绿岸望远镜绘制银河系第一象限(l = 10度-40度,|b| < 0.4度)的银河系中面的一部分。我们提出了试点调查的结果,该调查在以l = 10度、23度、24度、28度、29度、30度、31度、38度、45度和47度为中心的区域中绘制了大约6.5平方度的地图。RAMPS观测到NH3反转跃迁NH3(1,1)-(5,5),H2O 6(1,6)- 5(2,3)脉泽谱线,频率为22.235 GHz,以及其它几条分子谱线。我们提出了一个有代表性的一部分,从试点调查的数据,包括NH3(1,1)和NH3(2,2)的综合强度地图,H2O脉泽位置,地图的NH3速度,NH3线宽,总NH3柱密度,和NH3旋转温度。这些数据和产生这些数据的数据立方体可在RAMPS网站(http://sites.bu.edu/ramps/)上公开查阅。
英文摘要:
The Radio Ammonia Mid-Plane Survey (RAMPS) is a molecular line survey that aims to map a portion of the Galactic midplane in the first quadrant of the Galaxy (l = 10 deg - 40 deg, |b| < 0.4 deg) using the Green Bank Telescope. We present results from the pilot survey, which has mapped approximately 6.5 square degrees in fields centered at l = 10 deg, 23 deg, 24 deg, 28 deg, 29 deg, 30 deg, 31 deg, 38 deg, 45 deg, and 47 deg. RAMPS observes the NH3 inversion transitions NH3(1, 1) - (5, 5), the H2O 6(1,6) - 5(2,3) maser line at 22.235 GHz, and several other molecular lines. We present a representative portion of the data from the pilot survey, including NH3(1,1) and NH3(2,2) integrated intensity maps, H2O maser positions, maps of NH3 velocity, NH3 line width, total NH3 column density, and NH3 rotational temperature. These data and the data cubes from which they were produced are publicly available on the RAMPS website (http://sites.bu.edu/ramps/).
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