Fig. 14

Habitable zone boundaries for different oxygen fugacities (relative to the IW buffer) and initial water concentrations in the mantle (indicated in different shades of blue) in comparison to other HZ boundaries (Kasting et al. 1993b, in red; and Kopparapu et al. 2013, in green). Solid and dashed lines refer to inner and outer HZ boundaries, respectively.
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