# Hydrohalite Salt-albedo Feedback Could Cool M-dwarf Planets

@article{Shields2018HydrohaliteSF,
title={Hydrohalite Salt-albedo Feedback Could Cool M-dwarf Planets},
author={Aomawa L. Shields and Regina C. Carns},
journal={The Astrophysical Journal},
year={2018}
}
• Published 29 August 2018
• Geology, Physics
• The Astrophysical Journal
A possible surface type that may form in the environments of M-dwarf planets is sodium chloride dihydrate, or "hydrohalite" (NaCl $\cdot$ 2H$_2$O), which can precipitate in bare sea ice at low temperatures. Unlike salt-free water ice, hydrohalite is highly reflective in the near-infrared, where M-dwarf stars emit strongly, making the effect of the interaction between hydrohalite and the M-dwarf SED necessary to quantify. We carried out the first exploration of the climatic effect of hydrohalite…
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