Study of Physical Condition of The High Mass Protostellar Object S255IR By Lines of Various Molecules

The paper presents the results of processing observations of the formation region of massive stars S255IR. We identified the lines of 19 molecules and isotopologues. Based on the emission in the lines of these molecules, the radiation concentrations and abundances were estimated using the method using one spectral line. For five molecules, radiation concentrations, abundances, and temperatures were determined using the rotation diagram method.