Life on Exoplanets in the Habitable Zone of M Dwarfs?

@article{Childs2022LifeOE,
  title={Life on Exoplanets in the Habitable Zone of M Dwarfs?},
  author={Anna C. Childs and Rebecca G. Martin and Mario Livio},
  journal={The Astrophysical Journal Letters},
  year={2022},
  volume={937}
}
Exoplanets orbiting in the habitable zone around M dwarf stars have been prime targets in the search for life due to the long lifetimes of the host star, the prominence of such stars in the galaxy, and the apparent excess of terrestrial planets found around M dwarfs. However, the heightened stellar activity of M dwarfs and the often tidally locked planets in these systems have raised questions about the habitability of these planets. In this Letter we examine another significant challenge that… 

References

SHOWING 1-10 OF 75 REFERENCES

The Habitability of Planets Orbiting M-dwarf Stars

Why Do M Dwarfs Have More Transiting Planets?

We propose a planet formation scenario to explain the elevated occurrence rates of transiting planets around M dwarfs compared to Sun-like stars discovered by Kepler. We use a pebble drift and

On the Biohabitability of M-dwarf Planets

The recent detection of Earth-sized planets in the habitable zone of Proxima Centauri, Trappist-1, and many other nearby M-type stars has led to speculations whether liquid water and life actually

RV-detected planets around M dwarfs: Challenges for core accretion models

Context. Planet formation is sensitive to the conditions in protoplanetary disks, for which scaling laws as a function of stellar mass are known. Aims. We aim to test whether the observed population

On the formation and evolution of asteroid belts and their potential significance for life

Suggestions have been made that asteroid belts may be important both for the existence of life and perhaps even for the evolution of complex life on a planet. Using numerical models for

Asteroids and Life: How Special Is the Solar System?

Asteroid impacts with Earth may have played an essential role in the emergence of life on Earth through their creation of favorable niches for life, changes to the atmosphere, and delivery of water.

Giant Planet Occurrence in the Stellar Mass-Metallicity Plane

Correlations between stellar properties and the occurrence rate of exoplanets can be used to inform the target selection of future planet-search efforts and provide valuable clues about the

Tidal locking of habitable exoplanets

Potentially habitable planets can orbit close enough to their host star that the differential gravity across their diameters can produce an elongated shape. Frictional forces inside the planet

Water loss from terrestrial planets orbiting ultracool dwarfs: implications for the planets of TRAPPIST-1

Ultracool dwarfs (UCD) encompass the population of extremely low mass stars (later than M6-type) and brown dwarfs. Because UCDs cool monotonically, their habitable zone (HZ) sweeps inward in time.

Microlensing Sensitivity to Earth-Mass Planets in the Habitable Zone

Microlensing is one of the most powerful methods that can detect extrasolar planets, and a future space-based survey with a high monitoring frequency is proposed to detect a large sample of
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