Analysis of the RC catalog sample in the region overlapping with the regions of the FIRST and SDSS surveys: I. Identification of sources with the VLSS, TXS, NVSS, FIRST, and GB6 catalogs

TL;DR

This study cross-matches the RC radio catalog with several other surveys like FIRST, SDSS, VLSS, TXS, NVSS, and GB6, refining source positions and analyzing spectral shapes to better understand radio source morphology and properties.

Contribution

It provides the first detailed optical identification and spectral analysis of RC catalog sources in the overlapping survey region, utilizing multiple radio catalogs for comprehensive characterization.

Findings

75% of sources have determined morphology

Ratio of single, double, and multicomponent sources analyzed

Spectral shapes characterized across multiple frequencies

Abstract

Radio sources of the RC catalog produced in 1980--1985 at RATAN-600 radio telescope based on a deep survey of a sky strip centered on the declination of the SS 433 source are optically identified in the region overlapping with FIRST and SDSS surveys (about 132 square degrees). The NVSS catalog was used as the reference catalog for refining the coordinates of the radio sources. The morphology is found for about 75% of the objects of the sample and the ratio of single, double and multicomponent radio sources is computed based on FIRST radio maps. The 74, 365, 1400, and 4850 MHz data of the VLSS, TXS, NVSS, FIRST, and GB6 catalogs are used to analyze the shape of the spectra.