VLBI differential astrometry at large angular separation: 3C 395 - 3C 382

DOI: 
Publication date: 
01/01/1996
Main author: 
Lara L.
IAA authors: 
Lara, L.;Alberdi, A.
Authors: 
Lara L., Marcaide J.M., Alberdi A., Guirado J.C.
Journal: 
Astronomy and Astrophysics
Publication type: 
Article
Volume: 
314
Pages: 
672-678
Number: 
Abstract: 
We have observed the pair of radio sources 3C 395 and 3C 382 using Very Long Baseline Interferometry in November 1990, simultaneously at 8.4 and 2.3 GHz. Through the use of differential astrometry techniques we have determined with submilliarcsecond precision the angular separation between these two sources. We have demonstrated the feasibility of differential astrometry for pairs of radio sources separated 6° on the sky, being the reference source a low luminosity radio galaxy. Successive differential astrometry observations would allow to clarify unambiguously the internal kinematics of the quasar 3C 395.
Database: 
SCOPUS
Keywords: 
Astrometry; Galaxies: individual 3C 382; Quasars: individual (3C 395); Techniques: interferometric