first_spec_class second_spec_class prob_first_spec_class prob_second_spec_class taxonomy wavelength author ref method C V 0.0161 0.0270 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT V V 0.0360 0.0270 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT