first_spec_class second_spec_class prob_first_spec_class prob_second_spec_class taxonomy wavelength author ref method B S 0.2572 0.1690 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT S S 0.2705 0.1690 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT