Spectroscopic follow-up validates high accuracy of ML classification for Gaia white dwarf spectra and reclassifies most 'massive DB' candidates as magnetic white dwarfs or warm DQs consistent with merger origins.
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Hot DQs, magnetic and metal-polluted white dwarfs: spectroscopic insights from a Gaia machine-learning-selected 500 pc sample
Spectroscopic follow-up validates high accuracy of ML classification for Gaia white dwarf spectra and reclassifies most 'massive DB' candidates as magnetic white dwarfs or warm DQs consistent with merger origins.