Prospects for Extrasolar "Earths" in Habitable Zones

  title={Prospects for Extrasolar "Earths" in Habitable Zones},
  author={Barrie W. Jones and David R. Underwood and Peter Nicholas Sleep},
  journal={arXiv: Astrophysics},
We have shown that Earth-mass planets could survive in variously restricted regions of the habitable zones (HZs) of most of a sample of nine of the 102 main-sequence exoplanetary systems confirmed by 19 November 2003. In a preliminary extrapolation of our results to the other systems, we estimate that roughly a half of these systems could have had an Earth-mass planet confined to the HZ for at least the most recent 1000 Ma. The HZ migrates outwards during the main-sequence lifetime, and so this… 

Figures and Tables from this paper

A stability catalogue of the habitable zones in extrasolar planetary systems

In the near future, space missions will be launched (e.g. COROT, KEPLER) to detect Earth-like extrasolar planets. The orbital elements of these (still hypothetic) planets will contain some

Habitable zones for Earth-mass planets in multiple planetary systems

Abstract We perform numerical simulations to study the Habitable zones (HZs) and dynamical structure for Earth-mass planets in multiple planetary systems. For example, in the HD 69830 system, we

Dynamical Aspects for the Earth’s Habitability

Discoveries of more than 560 extrasolar planets show a huge diversity of these planetary systems. Most of the extrasolar planetary systems are quite different to our solar system, only some of them

Habitability of exoplanetary systems with planets observed in transit

We have used the measured properties of the stars in the 79 exoplanetary systems with one or more planets that have been observed in transit, to estimate each system's present habitability. Such

RESEARCH PAPER: The dynamical architecture and habitable zones of the quintuplet planetary system 55 Cancri

We perform numerical simulations to study the secular orbital evolution and dynamical structure of the quintuplet planetary system 55 Cancri with the self-consistent orbital solutions by Fischer and

The evolution of habitable zones during stellar lifetimes and its implications on the search for extraterrestrial life

A stellar evolution computer model has been used to determine changes in the luminosity L and effective temperature Te of single stars during their time on the main sequence. The range of stellar

Habitability of super-Earth planets around other suns: models including Red Giant Branch evolution.

A thermal evolution model for a 10 Earth-mass planet orbiting a star like the Sun, based on the integrated system approach, that identifies a so-called photosynthesis-sustaining habitable zone (pHZ), as determined by the limits of biological productivity on the planetary surface.

M stars as targets for terrestrial exoplanet searches and biosignature detection.

It is concluded that attempts at remote sensing of biosignatures and nonbiological markers from M star planets are important, not as tests of any quantitative theories or rational arguments, but instead because they offer an inspection of the residues from a Gyr-long biochemistry experiment in the presence of extreme environmental fluctuations.

Terrestrial planet formation in low-eccentricity warm-Jupiter systems

Context. Extrasolar giant planets are found to orbit their host stars with a broad range of semi-major axes 0.02 ≤ a ≤ 6 AU. Current theories suggest that giant planets orbiting at distances between