first_spec_class second_spec_class prob_first_spec_class prob_second_spec_class taxonomy wavelength author ref method K K 0.3740 0.3740 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT L 0.550 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT