first_spec_class second_spec_class prob_first_spec_class prob_second_spec_class taxonomy wavelength author ref method S S 0.4705 0.2360 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT X S 0.0396 0.2360 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT