A temperate rocky super-Earth transiting a nearby cool star

  title={A temperate rocky super-Earth transiting a nearby cool star},
  author={Jason A. Dittmann and Jonathan M. Irwin and David Charbonneau and Xavier Bonfils and Nicola Astudillo-Defru and Rapha{\"e}lle D. Haywood and Zachory K. Berta-Thompson and Elisabeth R. Newton and Joseph E. Rodriguez and Jennifer G. Winters and T. G. Tan and Jose M. Almenara and François Bouchy and Xavier Delfosse and Thierry Forveille and Christophe Lovis and Felipe Murgas and Francesco A. Pepe and Nuno C. Santos and St{\'e}phane Udry and Ana{\"e}l W{\"u}nsche and Gilbert A. Esquerdo and David W. Latham and Courtney D. Dressing},
M dwarf stars, which have masses less than 60 per cent that of the Sun, make up 75 per cent of the population of the stars in the Galaxy. The atmospheres of orbiting Earth-sized planets are observationally accessible via transmission spectroscopy when the planets pass in front of these stars. Statistical results suggest that the nearest transiting Earth-sized planet in the liquid-water, habitable zone of an M dwarf star is probably around 10.5 parsecs away. A temperate planet has been… 
A super-Earth and two sub-Neptunes transiting the nearby and quiet M dwarf TOI-270
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A Second Terrestrial Planet Orbiting the Nearby M Dwarf LHS 1140
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A Mini-Neptune and a Radius Valley Planet Orbiting the Nearby M2 Dwarf TOI-1266 in Its Venus Zone: Validation with the Habitable-zone Planet Finder
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We present calculations of the occurrence rate of small close-in planets around low-mass dwarf stars using the known planet populations from the Kepler and K2 missions. Applying completeness
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M-dwarf stars—hydrogen-burning stars that are smaller than 60 per cent of the size of the Sun—are the most common class of star in our Galaxy and outnumber Sun-like stars by a ratio of 12:1. Recent
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The high-energy emission from low-mass stars is mediated by the magnetic dynamo. Although the mechanisms by which fully convective stars generate large-scale magnetic fields are not well understood,