first_spec_class second_spec_class prob_first_spec_class prob_second_spec_class taxonomy wavelength author ref method C V 0.1119 0.2820 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT V V 0.4799 0.2820 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT