Investigating statistical and spectral characteristics of the radio sources from the RadioAstron catalog at millimetric wavelengths |
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| Authors: | A E Vol’vach N S Kardashev M G Larionov L N Vol’vach I D Strepka |
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| Institution: | (1) Crimean Astrophysical Observatory, Nauchnyi, Bakhchysarais’kyi Raion, Crimea, 98409, Ukraine;(2) Astro Space Center, Lebedev Physical Institute, Russian Academy of Sciences, ul. Profsoyuznaya 84, Moscow, 117810, Russian Federation |
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| Abstract: | We consider some statistical characteristics of radio sources at 22 GHz in the framework of the preparatory works on the RadioAstron space mission. The expected density of radio sources with inverted spectra is estimated. Based on the observations of the radio sources from the preliminary RadioAstron sample, we compare the expected and measured angular densities of the radio sources with inverted spectra. The optical characteristics of the objects with inverted spectra and of the sources from the complete sample are compared as well. We present some spectral parameters of the radio sources observed at two different frequencies. Some conclusions about the completeness and reliability of the preliminary RadioAstron catalog are made. |
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