Identification of lines in the spectrum of the quasar 0237?233

Abstract

Abstract. The emission and absorption lines (113716 -4290) in the spectrum of the quasar 0237 -233 are identified within the framework of the PLS model. The available evidence indicates that it is a helium star.Similarities between the spectral properties of 0237 -233 and the star Upsilon Sagittarii are pointed out.Predictions are made for the absorption-line spectrum which falls outside 113716 -4290 and also for an expected discontinuity at 22600.