first_spec_class second_spec_class prob_first_spec_class prob_second_spec_class taxonomy wavelength author ref method S V 0.0382 0.0230 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT V V 0.0137 0.0230 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT