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Fig. 9
Absorption by the Na D lines (left) and the Ca+ triplet (right) as a function of fraction of available lost mass that becomes absorbing gas, assuming a dust mass-loss rate of 2 × 1011 g s−1, Earth crust abundances and absorption lifetimes equal to the photoionization lifetimes of 1.8 × 103 s and 1.1 × 103 s, respectively.
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