first_spec_class second_spec_class prob_first_spec_class prob_second_spec_class taxonomy wavelength author ref method D S 0.643000 0.357000 Bus-DeMeo VIS Erasmus 2019ApJS..242...15E PHOT D S 0.647000 0.353000 Bus-DeMeo VIS Erasmus 2018ApJS..237...19E PHOT