Trapezium systems containing T tauri stars

The results of a spectroscopic investigation of four stars comprising a Trapezium system in the nebula Sh 155 are presented. The stars have a number of emission lines typical of red emission stars and T Tau stars. This system is one of the 13 systems which we have found in the Palomar atlas. It is shown that all of these systems are members of OB associations.Translated fromAstrofizika, Vol. 38, No. 1, pp. 17–24, January–March, 1995.