first_spec_class second_spec_class prob_first_spec_class prob_second_spec_class taxonomy wavelength author ref method D D 0.0964 0.0960 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT S D 0.519000 0.438000 Bus-DeMeo VIS Erasmus 2019ApJS..242...15E PHOT