first_spec_class second_spec_class prob_first_spec_class prob_second_spec_class taxonomy wavelength author ref method C C 0.7894 0.7870 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT X 0.296 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT