A Haser model tracking the fading of icy grain albedo by sublimation explains the exponential surface brightness profiles and photometry of comet 3I/ATLAS, with total ice scattering cross-section peaking at 3-4 au.
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Spectroscopic observations of disintegrating comet C/2019 Y4 (ATLAS) classify it as a typical Oort cloud comet with less dust, where porous dust accounts for its slightly red reflectivity gradient of ~5% per 1000 Å.
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A Physical Model for the Ice Coma of the Interstellar, Hyperactive Comet 3I/ATLAS
A Haser model tracking the fading of icy grain albedo by sublimation explains the exponential surface brightness profiles and photometry of comet 3I/ATLAS, with total ice scattering cross-section peaking at 3-4 au.
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Dust and Volatiles in the Disintegrating Comet C/2019 Y4 (ATLAS)
Spectroscopic observations of disintegrating comet C/2019 Y4 (ATLAS) classify it as a typical Oort cloud comet with less dust, where porous dust accounts for its slightly red reflectivity gradient of ~5% per 1000 Å.