VLBI observations of 416 extragalactic radio sources
Author(s) -
D. D. Morabito,
A. E. Niell,
R. A. Preston,
R. P. Linfield,
A. E. Wehrle,
J. S. Faulkner
Publication year - 1986
Publication title -
the astronomical journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.61
H-Index - 271
eISSN - 1538-3881
pISSN - 0004-6256
DOI - 10.1086/114080
Subject(s) - very long baseline interferometry , physics , astrophysics , declination , data reduction , astronomy , astrometry , radio astronomy , radio galaxy , fast radio burst , quasar , interferometry , galaxy , stars , computer science , data mining
Very long baseline interferometry (VLBI) observations of 416 radio sources with declinations north of -45 deg have been conducted at frequencies of 2.3 and 8.4 GHz. At 2.3 GHz, 323 of 391 radio sources observed were detected with a fringe spacing of 3 milliarcsec and a detection limit of about 0.1 Jy. At 8.4 GHz, 278 of 416 radio sources were detected with a fringe spacing of 1 milliarcsec and a detection limit of about 0.1 Jy. This survey was conducted primarily to determine the strength of compact components at 8.4 GHz for radio sources previously detected with VLBI at 2.3 GHz. Compact extragalactic radio sources with strong correlated flux densities at both frequencies are used to form a high-accuracy reference frame. 10 references.
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