The Nature of the Emission Spectrum of NGC 7793 P13: modeling the atmosphere of the donor star

A. S. Vinokurov, A. E. Kostenkov, K. E. Atapin +1

We continue to study the ultra-luminous X-ray source NGC 7793 P13 in the optical range. In this work, we are testing the model of a spherically symmetric wind atmosphere of the don…