Abstract
We constructed radio spectra for ∼1400 UTR-2 sources and find that 46% of them have concave curvature. Inspection of NVSS maps of 700 UTR sources suggests that half of all UTR sources are either blends of two or more sources or have an ultra-steep spectrum (USS). The fraction of compact USS sources in UTR may be near 10%. Using NVSS and the Digitized Sky Survey(s) we expect to double the UTR optical identification rate from currently ∼19%.
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References
Andernach H., Trushkin S.A. 1997, these proceedings
Braude S.Ya., Sokolov K.P., Zakharenko S.M. 1994, Ap&SS 213, 1 and references therein
Condon J.J., Cotton W.D., Greisen E.W., Yin Q.F. et al. 1997, these proceedings
Herbig T., & Readhead A.C.S. 1992, ApJS 81, 83
Kühr H., Witzel A., Pauliny-Toth I.I.K., Nauber U. 1981, A&AS 45, 367
Rhee, G., Marvel K., Wilson T., Roland J., Bremer M., & Jackson N. 1996, ApJS 107, 175
Röttgering H.J.A., Lacy M., Miley G.K., Chambers K.C., Saunders R. 1994, A&AS 108, 79
Roger, R.S., Bridle, A.H., & Costain, C.H., 1973, AJ 78, 1030
Otrupcek R.E., & Wright A.E. 1990, PASA 9, 170 (PKSCAT90)
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Verkhodanov, O., Andernach, H., Verkhodanova, N., Loiseau, N. (1998). Radio Spectra and NVSS Maps of Decametric Sources. In: Bremer, M.N., Jackson, N., Pérez-Fournon, I. (eds) Observational Cosmology. Astrophysics and Space Science Library, vol 226. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-5238-9_44
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DOI: https://doi.org/10.1007/978-94-011-5238-9_44
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