first_spec_class second_spec_class prob_first_spec_class prob_second_spec_class taxonomy wavelength author ref method Ch Bus-DeMeo VIS Birlan 2024A&A...689A.334B PHOT Ch Bus-DeMeo VIS Birlan 2024A&A...689A.334B PHOT Q Bus-DeMeo NIR Marsset 2022AJ....163..165M SPEC