first_spec_class second_spec_class prob_first_spec_class prob_second_spec_class taxonomy wavelength author ref method K K 0.2054 0.2054 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT X 0.936 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT