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Table 6

Limits of the habitable zone for HD 176986.

Outer limit Distance [AU] Period [d] Ref.
Early Mars 1.097 ± 0.067 474 ± 53 1
Max. greenhouse 1.054 ± 0.066 446 ± 51 1

Inner limit Distance [AU] Period [d]

Runaway greenhouse 0.588 ± 0.027 186 ± 21 1
Recent Venus 0.445 ± 0.030 122 ± 13 1
Dry world 0.341 ± 0.021 82.1 ± 9.2 2
Dry world (high alb.) 0.225 ± 0.013 43.9 ± 4.8 2

References: 1 – Kopparapu (2013), 2 – Zsom et al. (2013).

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