first_spec_class second_spec_class prob_first_spec_class prob_second_spec_class taxonomy wavelength author ref method S S 0.4065 0.5680 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT S S 0.6310 0.5680 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT SQ 0.22 Bus VIS Carvano 2010A&A...510A..43C PHOT