first_spec_class second_spec_class prob_first_spec_class prob_second_spec_class taxonomy wavelength author ref method S S 0.1926 0.1450 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT V S 0.1873 0.1450 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT