first_spec_class second_spec_class prob_first_spec_class prob_second_spec_class taxonomy wavelength author ref method C C 0.5174 0.4180 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT X C 0.3207 0.4180 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT