first_spec_class second_spec_class prob_first_spec_class prob_second_spec_class taxonomy wavelength author ref method C S 0.0786 0.0990 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT S S 0.2412 0.0990 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT