first_spec_class second_spec_class prob_first_spec_class prob_second_spec_class taxonomy wavelength author ref method S V 0.1982 0.1810 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT V V 0.2020 0.1810 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT