VLBI observations at 2. 3 GHz of the compact galaxy 1934-638

VLBI observations of the strong radio source 1934-638 show it to be a binary with a component separation of 42.0 + or - 0.2 mas, a position angle of 90.5 + or - 1 deg, and component sizes of about 2.5 mas. The results imply the presence of an additional elongated component aligned with, and between,...

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Bibliographic Details
Published in:The Astronomical journal 1989-07, Vol.98
Main Authors: Tzioumis, A.K., Jauncey, D.L., Preston, R.A., Meier, D.L., Morabito, D.D., Skjerve, L., Slade, M.A., Nicolson, G.D., Niell, A.E., Wehrle, A.E., Manchester Victoria Univ., Jodrell Bank, CSIRO, Div. of Radiophysics, Epping, California Institute of Technology, Pasadena, National Institute for Telecommunications Research, Johannesburg, Haystack Observatory, Westford, MA, California, Univ., Los Angeles
Format: Article
Language:English
Subjects:
640105 - Astrophysics & Cosmology- Galaxies
AUSTRALASIA
AUSTRALIA
CHARGE-COUPLED DEVICES
CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS
COSMIC RADIO SOURCES
DEVELOPED COUNTRIES
ELECTROMAGNETIC RADIATION
FLUX DENSITY
GALAXIES
INTERFEROMETRY
MORPHOLOGY
RADIATIONS
RADIOWAVE RADIATION
RED SHIFT
SEMICONDUCTOR DEVICES
VARIATIONS
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Summary:VLBI observations of the strong radio source 1934-638 show it to be a binary with a component separation of 42.0 + or - 0.2 mas, a position angle of 90.5 + or - 1 deg, and component sizes of about 2.5 mas. The results imply the presence of an additional elongated component aligned with, and between, the compact double components. The sources's almost equal compact double structure, peaked spectrum, low variability, small polarization, and particle-dominated radio lobes suggests that it belongs to the class of symmetric compact double sources identified by Phillips and Mutel (1980, 1981, 1982). 26 refs.
ISSN:0004-6256
1538-3881
DOI:10.1086/115124