first_spec_class second_spec_class prob_first_spec_class prob_second_spec_class taxonomy wavelength author ref method S S 0.1668 0.6890 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT S S 0.7400 0.6890 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT X DeMeo-Carry VIS Carry PHOT