first_spec_class second_spec_class prob_first_spec_class prob_second_spec_class taxonomy wavelength author ref method K Bus-DeMeo NIR Pajuelo 2018MNRAS.477.5590P SPEC S M 0.580000 0.410000 Mahlke VISNIR Mahlke 2022A&A...665A..26M SPEC Sq K Bus-DeMeo NIR Lucas 2017Icar..291..268L SPEC