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Abstract

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 7○̣5 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.

Item Type:	Article
Authors/Creators:	Shu, F and Petrov, L and Jiang, W and Xia, B and Jiang, T and Cui, Y and Takefuji, K and McCallum, J and Lovell, J and Yi, S-O and Hao, L and Yang, W and Zhang, H and Chen, Z and Li, J
Keywords:	astrometry, catalogs, reference systems, surveys, techniques: interferometric
Journal or Publication Title:	Astrophysical Journal, Supplement Series
Publisher:	Univ Chicago Press
ISSN:	0067-0049
DOI / ID Number:	10.3847/1538-4365/aa71a3
Copyright Information:	Copyright 2017 The American Astronomical Society
Related URLs:	UTAS Profile: McCallum, J UTAS Profile: Lovell, J
Item Statistics:	View statistics for this item

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