Probability distribution of terrestrial planets in habitable zones around host stars

@article{Guo2009ProbabilityDO,
  title={Probability distribution of terrestrial planets in habitable zones around host stars},
  author={Jianpo Guo and Fenghui Zhang and Xuefei Chen and Zhanwen Han},
  journal={Astrophysics and Space Science},
  year={2009},
  volume={323},
  pages={367-373}
}
With more and more exoplanets being detected, it is paid closer attention to whether there are lives outside solar system. We try to obtain habitable zones and the probability distribution of terrestrial planets in habitable zones around host stars. Using Eggleton’s code, we calculate the evolution of stars with masses less than 4.00 M⊙. We also use the fitting formulae of stellar luminosity and radius, the boundary flux of habitable zones, the distribution of semimajor axis and mass of planets… 

TERRESTRIAL PLANETS ACROSS SPACE AND TIME

The study of cosmology, galaxy formation, and exoplanets has now advanced to a stage where a cosmic inventory of terrestrial planets (TPs) may be attempted. By coupling semianalytic models of galaxy

Habitable zones of host stars during the post-MS phase

A star will become brighter and brighter with stellar evolution, and the distance of its habitable zone will become larger and larger. Some planets outside the habitable zone of a host star during

A simple evolutional model of Habitable Zone around host stars with various mass and low metallicity

Habitable Zone (HZ) is defined as a life existence area, where water at the surface of the terrestrial planet is in liquid phase. This is caused by the balance of flux from the host star and

Habitable zone lifetimes of exoplanets around main sequence stars.

The results show that exoplanet HD 85512b is no longer within the HZ, assuming it has an Earth analog atmosphere, and should be considered in future models of planetary habitability as setting an upper limit on the lifetime of any potential exoplanetary biosphere.

A model of habitability within the Milky Way galaxy.

This study has improved on other literature on the GHZ by populating stars on an individual basis and modeling Type II supernova and Type Ia supernova sterilizations by selecting their progenitors from within this preexisting stellar population.

SPECTRUM-DRIVEN PLANETARY DEGLACIATION DUE TO INCREASES IN STELLAR LUMINOSITY

Distant planets in globally ice-covered, “snowball,” states may depend on increases in their host stars' luminosity to become hospitable for surface life. Using a general circulation model, we

Habitable zones and UV habitable zones around host stars

Ultraviolet radiation is a double-edged sword to life. If it is too strong, the terrestrial biological systems will be damaged. And if it is too weak, the synthesis of many biochemical compounds

Searching for Life on Habitable Planets and Moons

Earth is the only known inhabited planet in the universe to date. However, advancements in the fields of astrobiology and observational astronomy, and the discovery of large varieties of

In search of future earths: assessing the possibility of finding Earth analogues in the later stages of their habitable lifetimes.

The possibility of finding an old-Earth analogue in nearby star systems would be ideal, because this would allow for atmospheric characterization and the benefits of analyzing older Earths are discussed.

Modelling biogeochemical controls on planetary habitability

The length of a planet's `habitable period' is an important controlling factor on the evolution of life and of intelligent observers. This can be defined as the amount of time the surface

References

SHOWING 1-10 OF 51 REFERENCES

A reappraisal of the habitability of planets around M dwarf stars.

It is concluded that M dwarf stars may indeed be viable hosts for planets on which the origin and evolution of life can occur and it makes sense to include M dwarfs in programs that seek to find habitable worlds and evidence of life.

Dynamical Habitability of Known Extrasolar Planetary Systems

Habitability is usually defined as the requirement for a terrestrial planet's atmosphere to sustain liquid water. This definition can be complemented by the dynamical requirement that other planets

Cosmic ray impact on extrasolar earth-like planets in close-in habitable zones.

It is shown that close-in extrasolar planets in the habitable zone of M stars are synchronously rotating with their host star because of the tidal interaction, and it is proposed that, depending on atmospheric pressure, biological systems on the surface of Earth-like Extrasolar planets at close- in orbital distances can be strongly influenced by secondary cosmic rays.

Toward a Deterministic Model of Planetary Formation. III. Mass Distribution of Short-Period Planets around Stars of Various Masses

The origin of a recently discovered close-in Neptune-mass planet around GJ 436 poses a challenge to the current theories of planet formation. On the basis of the sequential accretion hypothesis and

Orbital Stability of Terrestrial Planets inside the Habitable Zones of Extrasolar Planetary Systems

We investigate orbital stability of terrestrial planets inside the habitable zones of three stellar systems, i.e., 51 Peg, 47 UMa, and HD 210277, with recently discovered giant planets. These systems

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.

Habitability of Known Exoplanetary Systems Based on Measured Stellar Properties

Habitable planets are likely to be broadly Earth-like in composition, mass, and size. Masses are likely to be within a factor of a few of the Earth's mass. Currently, we do not have sufficiently

Toward a Deterministic Model of Planetary Formation. I. A Desert in the Mass and Semimajor Axis Distributions of Extrasolar Planets

In an attempt to develop a deterministic theory for planet formation, we examine the accretion of cores of giant planets from planetesimals, gas accretion onto the cores, and their orbital migration.

The distribution of low-mass stars in the Galactic disc

We quantify the complex interdependence of stellar binarity, the stellar mass-luminosity relation, the mass function, the colour-magnitude relation and Galactic disc structure, all of which must be
...