first_spec_class second_spec_class prob_first_spec_class prob_second_spec_class taxonomy wavelength author ref method V V 0.0663 0.0663 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT X 0.187 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT