first_spec_class second_spec_class prob_first_spec_class prob_second_spec_class taxonomy wavelength author ref method D X 0.0135 0.0280 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT X X 0.0319 0.0280 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT