DETERMINATION OF THE EVOLUTIONARY STATUS OF STARS IRAS 22023 + 5249 AND IRAS 22150 + 6109

Abstract

This work is devoted to the study of young Ae/Be Herbig type objects that are lo-
cated up to the main sequence. According to photometric criteria, the young Ae/Be Herbig objects
closely resemble protoplanetary stars, which also have IR excesses and emission lines. With the ex-
pansion of the list of young Ae/Be Herbig stars under study, stars IRAS 22023 + 5249 and IRAS
22150 + 6109 were included. Here are the results of multicolor photometric observations of two stars with an excess of infrared radiation (IRAS 22023 + 5249 and IRAS 22150 + 6109) in the UBVRI Johnson system, obtained with the 1-meter telescope of the Tien Shan Astronomical Observatory. These objects were found as a result of a search for coordinate correspondences between the IRAS catalog and the catalog of galactic hot stars with emission lines. Previously, IRAS 22023 + 5249 and IRAS 22150 + 6109 were known as stars with emission in the Hα line, but their optical photometry was not performed. An analysis of the observed data together with the published results made it possible to evaluate the physical parameters of the objects and draw a conclusion about
their evolutionary status. It is shown that IRAS 22023 + 5249 is most likely a proto-planetary nebula, and IRAS 22150 + 6109 is a young star