first_spec_class second_spec_class prob_first_spec_class prob_second_spec_class taxonomy wavelength author ref method C 0.625 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT C S 0.460000 0.260000 Mahlke VIS Mahlke 2022A&A...665A..26M SPEC Xc Bus VIS Morate 2019A&A..630A.141M SPEC