first_spec_class second_spec_class prob_first_spec_class prob_second_spec_class taxonomy wavelength author ref method S 0.656 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT V V 0.5344 0.5344 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT