first_spec_class second_spec_class prob_first_spec_class prob_second_spec_class taxonomy wavelength author ref method S S 0.1728 0.1540 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT V S 0.0140 0.1540 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT