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Radio-optical Identification of Very-Steep Spectrum Radio Sources from the UTR-2 Catalogue

Published online by Cambridge University Press:  26 May 2016

H. Andernach ,
O.V. Verkhodanov  and
N.V. Verkhodanova
H. Andernach
Affiliation:
Depto. de Astronomía, Apdo. Postal 144, Univ. Guanajuato, Guanajuato, Mexico
O.V. Verkhodanov
Affiliation:
Special Astrophysical Observatory, Nizhnij Arkhyz, Russia, 369167
N.V. Verkhodanova
Affiliation:
Special Astrophysical Observatory, Nizhnij Arkhyz, Russia, 369167

Abstract

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We used radio source catalogues accessible from the CATS database to establish radio continuum spectra for decametric radio sources in the UTR-2 catalogue. In an attempt to find further candidates for high-redshift radio galaxies, we searched the FIRST and NVSS surveys for counterparts of a sample of UTR sources with ultra-steep radio spectra (USS, α ≤ −1.2, S ∼ vα). We derived accurate positions and sizes for 23 of these USS sources. The search for optical counterparts from the APM (object) and DSS (image) databases, as well as infrared and X—ray identifications of these UTR sources are in progress.

Type
Part 4: Extragalactic Radio Sources
Information
Symposium - International Astronomical Union , Volume 199: The Universe at Low Radio Frequencies , 2002 , pp. 217 - 218
Copyright
Copyright © Astronomical Society of the Pacific 2002 

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