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Status: Unchecked ×Keyword: Earth-like planets ×Clear all

3 claims from 1 paper

1. Physics and Astronomy › Stellar, planetary, and galactic studies

   Forming Earth-like and Low-Mass Rocky Exoplanets Through Pebble and Planetesimal Accretion

   Yzer, Brasser and ten Kate · arXiv (Cornell University) · 2024

   Simulations of terrestrial planet formation by pebble accretion around stars of 0.09 to 1.00 solar masses find Earth-like planets around some stars but seldom in the habitable zone.

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   1. UncheckedIn simulations, Earth-like planets form around stars of 0.49, 0.70 and 1.00 solar masses whichever of two pebble accretion models is used.“We find that Earth-like planets are consistently formed around 0.49, 0.70, and 1.00 M$_\odot$ stars, irrespective of the pebble accretion model that is used.”
   2. UncheckedIn these simulations, Earth-like planets built by pebble accretion rarely stay in the habitable zone, because they quickly migrate to the disc's inner edge.“However, Earth-like planets seldom remain in the habitable zone, for they rapidly migrate to the inner edge of the disc.”
   3. UncheckedIn these simulations, pebble accretion onto small planetesimals could not build Earth-mass planets around stars of 0.09 and 0.20 solar masses.“Furthermore, we find that pebble accretion onto small planetesimals cannot produce Earth-mass planets around 0.09 and 0.20 M$_\odot$ stars, challenging the proposed narrative of the formation of the TRAPPIST-1 system.”