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Theoretical analysis reveals survival constraints for icy grains in debris discs, highlighting the destructive impact of ultraviolet sputtering on water ice.
Aims.We put theoretical constraints on the presence and survival of icy grains in debris discs. Particular attention is paid to UV sputtering of water ice, which has so far not been studied in detail in this context.
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Grigorieva et al. (2007) studied this question.
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