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Exoplanet Discoveries and Updates
Tracing through the references in the new Proxima c paper, I found what seems to be the the original paper for proxima c. Interestingly, it gives a lower mass sin i for proxima b, only 1.0 earths, which is used in the latest paper to estimate a proper mass of 2.1 earths.

Quote:If we assume the coplanarity of the orbits of the planets Proxima b and c, the de-projected mass of the close-in planet is mb = 2.1 +1.9 −0.6 M⊕ (adopting mb sin i = 1.0±0.1 M⊕ from Damasso et al. 2020).

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RE: Exoplanet Discoveries and Updates - by dangerous_safety - 03-31-2020, 12:50 PM

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