The VLBA Calibrator Survey—VCS1
The VLBA Calibrator Survey—VCS1
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DOI：
10.1086/339806
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发表时间：
2002-01
期刊：
影响因子：
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通讯作者：
Anthony J. Beasley;David Gordon;Alison B. Peck;L. Petrov;D. MacMillan;E. Fomalont;Chopo Ma
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文献类型：
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作者：
Anthony J. Beasley;David Gordon;Alison B. Peck;L. Petrov;D. MacMillan;E. Fomalont;Chopo Ma
本文介绍了一个包含分布于北方天空的1332个河外射电源的毫角秒精度位置的星表--甚长基线射电巡天（VCS 1）。这些位置是从双频2.3和8.4 GHz VLBA快照观测的天体测量分析中得出的;在大多数情况下，也可以获得源的图像。这些射电源适用于大地测量和天体测量实验，并作为高灵敏度天文成像的相位参考校准器。VCS 1是有史以来进行的最大的高分辨率射电测量，使射电天文学界可用于VLBI应用的源数量增加了两倍。除了天体测量的作用，这个调查可以用于活动星系核，银河系，引力透镜和宇宙学的研究。
A catalog containing milliarcsecond-accurate positions of 1332 extragalactic radio sources distributed over the northern sky is presented—the Very Long Baseline Array Calibrator Survey (VCS1). The positions have been derived from astrometric analysis of dual-frequency 2.3 and 8.4 GHz VLBA snapshot observations; in a majority of cases, images of the sources are also available. These radio sources are suitable for use in geodetic and astrometric experiments, and as phase-reference calibrators in high-sensitivity astronomical imaging. The VCS1 is the largest high-resolution radio survey ever undertaken and triples the number of sources available to the radio astronomy community for VLBI applications. In addition to the astrometric role, this survey can be used in active galactic nuclei, Galactic, gravitational lens, and cosmological studies.