Habitability of Extrasolar Planets and Tidal Spin Evolution

@article{Heller2011HabitabilityOE,
  title={Habitability of Extrasolar Planets and Tidal Spin Evolution},
  author={Ren{\'e} Heller and Rory Barnes and J{\'e}r{\'e}my Leconte},
  journal={Origins of Life and Evolution of Biospheres},
  year={2011},
  volume={41},
  pages={539-543}
}
Stellar radiation has conservatively been used as the key constraint to planetary habitability. We review here the effects of tides, exerted by the host star on the planet, on the evolution of the planetary spin. Tides initially drive the rotation period and the orientation of the rotation axis into an equilibrium state but do not necessarily lead to synchronous rotation. As tides also circularize the orbit, eventually the rotation period does equal the orbital period and one hemisphere will be… 

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References

SHOWING 1-10 OF 17 REFERENCES

Tidal obliquity evolution of potentially habitable planets

Context. Stellar insolation has been used as the main constraint on a planet’s potential habitability. However, as more Earth-like planets are discovered around low-mass stars (LMSs), a

Tides and the evolution of planetary habitability.

The tidal evolution of hypothetical terrestrial planets around low-mass stars is calculated and it is shown that tides can evolve planets past the inner edge of the habitable zone, sometimes in less than 1 billion years.

Tidal heating of terrestrial extrasolar planets and implications for their habitability

The tidal heating of hypothetical rocky (or terrestrial) extrasolar planets spans a wide range of values depending on stellar masses and initial orbits. Tidal heating may be sufficiently large (in

HABITABLE CLIMATES: THE INFLUENCE OF OBLIQUITY

Extrasolar terrestrial planets with the potential to host life might have large obliquities or be subject to strong obliquity variations. We revisit the habitability of oblique planets with an energy

The HARPS search for southern extra-solar planets: XVIII. An Earth-mass planet in the GJ 581 planetary system

The GJ 581 planetary system was already known to harbour three planets, including two presumably rocky planets which straddle its habitable zone. We report here the detection of an additional planet

TIDAL LIMITS TO PLANETARY HABITABILITY

The habitable zones (HZs) of main-sequence stars have traditionally been defined as the range of orbits that intercept the appropriate amount of stellar flux to permit surface water on a planet.

Is tidal heating sufficient to explain bloated exoplanets? Consistent calculations accounting for finite initial eccentricity

We present the consistent evolution of short-period exoplanets coupling the tidal and gravothermal evolution of the planet. Contrarily to previous similar studies, our calculations are based on the

Habitable planets around the star Gliese 581

Radial velocity surveys are now able to detect terrestrial planets at habitable distance from M-type stars. Recently, two planets with minimum masses below 10 Earth masses were reported in a triple

Habitable zones around main sequence stars.

The results suggest that mid-to-early K stars should be considered along with G stars as optimal candidates in the search for extraterrestrial life.

Beyond the principle of plentitude: a review of terrestrial planet habitability.

This review of recent work that directly or indirectly addresses the habitability of terrestrial (rocky) planets like the Earth focuses on recent refinements to habitable zone calculations, the formation and orbital stability of terrestrial planets, and the acquisition and loss of terrestrial planet carbon and nitrogen.