VLBI Ecliptic Plane Survey: VEPS-1
VLBI Ecliptic Plane Survey: VEPS-1
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VLBI 黄道面巡天：VEPS-1
DOI：
10.3847/1538-4365/aa71a3
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发表时间：
2017
期刊：
影响因子：
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通讯作者：
Li Jinling
中科院分区：
文献类型：
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作者：
Shu Fengchun;Petrov Leonid;Jiang Wu;Xia Bo;Jiang Tianyu;Cui Yuzhu;Takefuji Kazuhiro;McCallum Jamie;Lovell Jim;Yi Sang oh;Hao Longfei;Yang Wenjun;Zhang Hua;Chen Zhong;Li Jinling
我们在这里介绍了VLBI黄道平面测量(VEPS)计划第一部分的结果。该计划的目标是找到黄道面内适合作为航天器预期相位参考观测的校准器的所有紧凑源，并以1.5nrad水平的精度确定它们的位置。我们以两种模式运行该程序：搜索和精炼。在搜索模式下，观察到了Parkes-MIT-NRAO和Green Bank 6 cm(GB6)星表中列出的在5 GHz处亮度大于50mJy的所有源的完整样本，除了以前用VLBI探测到的源。在精化模式中，所有黄道平面源的位置，包括在搜索模式中发现的那些，都得到了改进。到2016年10月，已经观察和分析了13次24小时会议，目标是所有亮度超过100mJy的源。在3320个观测目标源中，已探测到555个目标。我们还在精化模式下进行了多次后续的VLBI实验，改进了249个黄道平面震源的位置。
We present here the results of the first part of the VLBI Ecliptic Plane Survey (VEPS) program. The goal of the program is to find all compact sources within of the ecliptic plane that are suitable as calibrators for anticipated phase referencing observations of spacecraft, and determine their positions with accuracy at the 1.5 nrad level. We run the program in two modes: search and refine. In the search mode, a complete sample of all sources brighter than 50 mJy at 5 GHz listed in the Parkes-MIT-NRAO and Green Bank 6 cm (GB6) catalogs, except those previously detected with VLBI, is observed. In the refining mode, the positions of all ecliptic plane sources, including those found in the search mode, are improved. By 2016 October, thirteen 24 hr sessions that targeted all sources brighter than 100 mJy have been observed and analyzed. Among 3320 observed target sources, 555 objects have been detected. We also conducted a number of follow-up VLBI experiments in the refining mode and improved the positions of 249 ecliptic plane sources.