TRAPPIST-1 : Transiting Earth-Sized Planets Around a Nearby Ultracool Dwarf

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Re: TRAPPIST-1 : Transiting Earth-Sized Planets Around a Nearby Ultracool Dwarf

Post by Lazarus on 16th November 2017, 3:16 pm

Taking account of spots and faculae on TRAPPIST-1 leads to increased density estimates for the planets:

Rackham, Apai & Giampapa "The Transit Light Source Problem: False Spectral Features and Incorrect Densities for M Dwarf Transiting Planets"
https://arxiv.org/abs/1711.05691
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Re: TRAPPIST-1 : Transiting Earth-Sized Planets Around a Nearby Ultracool Dwarf

Post by Lazarus on 22nd November 2017, 1:03 pm

Papaloizou et al. "The TRAPPIST-1 system: Orbital evolution, tidal dissipation, formation and habitability"
https://arxiv.org/abs/1711.07932

Suggestions that there are two subsystems of planets when considering tidal behaviour. The habitable planet candidates would be d, e and f.
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