Little Red Dots show soft ionizing spectra consistent with massive stars, based on high H-alpha EWs and low HeII/H-beta ratios that rule out hard AGN spectra via Cloudy modeling.
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2 Pith papers cite this work. Polarity classification is still indexing.
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GALEX NUV excess shows an 8 sigma anti-correlation with [Fe/H] in 492 halo stars, enabling distinction of VMP stars but limited for EMP stars by chromospheric variability.
citing papers explorer
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The Missing Hard Photons of Little Red Dots: Their Incident Ionizing Spectra Resemble Massive Stars
Little Red Dots show soft ionizing spectra consistent with massive stars, based on high H-alpha EWs and low HeII/H-beta ratios that rule out hard AGN spectra via Cloudy modeling.
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Using GALEX UV Excess to Search for Metal-poor Halo Stars
GALEX NUV excess shows an 8 sigma anti-correlation with [Fe/H] in 492 halo stars, enabling distinction of VMP stars but limited for EMP stars by chromospheric variability.