first_spec_class second_spec_class prob_first_spec_class prob_second_spec_class taxonomy wavelength author ref method S S 0.3338 0.3760 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT S S 0.4068 0.3760 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT