first_spec_class second_spec_class prob_first_spec_class prob_second_spec_class taxonomy wavelength author ref method C V 0.4191 0.3030 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT V V 0.6211 0.3030 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT