Radio-optical identification of very-steep spectrum radio sources from the UTR-2 catalogue

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dc.creatorAndernach, H.
dc.creatorVerkhodanov, O. V.
dc.creatorVerkhodanova, N. V.
dc.date2000-01-27
dc.date.accessioned2026-07-07T01:51:54Z
dc.date.available2026-07-07T01:51:54Z
dc.descriptionWe used radio source catalogues accessible from the CATS database (http://cats.sao.ru) to establish radio continuum spectra for decametric radio sources in the UTR-2 catalogue (Braude et al., 1978--1994). From these, we select a sample of 23 sources with ultra steep radio spectra (α<=-1.2, S ~ ν^α) and present accurate positions and sizes from FIRST and NVSS. 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.
dc.description7 pages, 5 figures. This was the poster as presented on IAU Symp 199. The short (final) version was submitted the Symp. Proceedings
dc.identifierhttps://arxiv.org/abs/astro-ph/0001473
dc.identifierhttp://arxiv.org/abs/astro-ph/0001473
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/453
dc.subjectAstrophysics
dc.titleRadio-optical identification of very-steep spectrum radio sources from the UTR-2 catalogue
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