first_spec_class second_spec_class prob_first_spec_class prob_second_spec_class taxonomy wavelength author ref method C 0.956000 Bus-DeMeo VIS Erasmus 2019ApJS..242...15E PHOT D D 0.1063 0.1063 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT