first_spec_class second_spec_class prob_first_spec_class prob_second_spec_class taxonomy wavelength author ref method M S 0.670000 0.290000 Mahlke VIS Mahlke 2022A&A...665A..26M SPEC X 0.836 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT Xe Bus VIS Bus 2002Icar..158..146B SPEC Xk Bus-DeMeo VISNIR Hasegawa 2024AJ....167..224H SPEC