Analysis of a Sample of RC Catalog Objects in the Region Overlapping with the Areas Covered by FIRST and SDSS Surveys. II: Optical Identification with the SDSS Survey and USNO-B1 and 2MASS Catalogs

TL;DR

This study cross-matches radio sources from the RC catalog with optical data from SDSS, USNO-B1, and 2MASS, achieving about 80% optical identification for the sources using detailed radio structure information.

Contribution

It presents an optical identification method for RC catalog radio sources utilizing FIRST and SDSS data, emphasizing radio structure analysis.

Findings

Optical counterparts identified for approximately 80% of radio sources.

Utilized radio structure information from FIRST for candidate selection.

Demonstrated effective cross-matching between radio and optical surveys.

Abstract

We report the results of optical identification of a sample of RC catalog radio sources with the FIRST and SDSS surveys. For 320 sources identified with NVSS and FIRST objects we perform optical identification with the SDSS survey. When selecting optical candidates we make maximum use of the information about the structure of radio sources as provided by the FIRST survey images. We find optical candidates for about 80% of all radio sources.