first_spec_class second_spec_class prob_first_spec_class prob_second_spec_class taxonomy wavelength author ref method V S 0.5022 0.2440 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT X S 0.2203 0.2440 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT