first_spec_class second_spec_class prob_first_spec_class prob_second_spec_class taxonomy wavelength author ref method Q S 0.880000 0.110000 Mahlke VIS Mahlke 2022A&A...665A..26M SPEC V 0.835 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT