first_spec_class second_spec_class prob_first_spec_class prob_second_spec_class taxonomy wavelength author ref method B V 0.0397 0.1470 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT V V 0.4526 0.1470 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT