first_spec_class second_spec_class prob_first_spec_class prob_second_spec_class taxonomy wavelength author ref method D S 0.2139 0.1780 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT S S 0.1997 0.1780 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT