Differential Astrometry over 15 degrees
Astrophysics
2009-10-31 v1
Abstract
We observed the pair of radio sources 1150+812 and 1803+784 in November 1993 with a VLBI array, simultaneously recording at 8.4 and 2.3 GHz. We determined the angular separation between the two sources with submilliarcsecond accuracy by using differential techniques. This result demonstrates the feasibility of high precision differential astrometry for radio sources separated in the sky by almost 15 degrees, and opens the avenue to its application to larger samples of radio sources.
Cite
@article{arxiv.astro-ph/9812056,
title = {Differential Astrometry over 15 degrees},
author = {M. A. Perez-Torres and J. M. Marcaide and J. C. Guirado and E. Ros},
journal= {arXiv preprint arXiv:astro-ph/9812056},
year = {2009}
}
Comments
6 pages, latex2e, 2 figures, To appear in the proceedings of the EVN/JIVE Symposium No. 4, New Astronomy Reviews (eds. Garret, M. Campbell, R., and Gurvits, L.)