Optical identification of equatorial infrared catalogue number 1 sources previously identified with only AFGL sources

Abstract

We have identified, using Palomar Observatory Sky Survey (POSS) prints, the optical counterparts of six of the seven sources from the Equatorial Infrared Catalogue Number 1 (EIC-1) previously identified by Sweeney et al. (1978) with only AFGL infrared sources. We have estimated their P and R magnitudes from a measurement of the diameters of their images on the O and E POSS prints. The source EIC 725 does not appear to have an optical counterpart.