first_spec_class second_spec_class prob_first_spec_class prob_second_spec_class taxonomy wavelength author ref method A S 0.2984 0.5510 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT S S 0.7828 0.5510 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT