The Galactic Habitable Zone and the Age Distribution of Complex Life in the Milky Way

  title={The Galactic Habitable Zone and the Age Distribution of Complex Life in the Milky Way},
  author={C. Lineweaver and Yeshe Fenner and Brad K. Gibson},
  pages={59 - 62}
We modeled the evolution of the Milky Way Galaxy to trace the distribution in space and time of four prerequisites for complex life: the presence of a host star, enough heavy elements to form terrestrial planets, sufficient time for biological evolution, and an environment free of life-extinguishing supernovae. We identified the Galactic habitable zone (GHZ) as an annular region between 7 and 9 kiloparsecs from the Galactic center that widens with time and is composed of stars that formed… 
The Age Distribution of Potential Intelligent Life in the Milky Way
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The galactic habitable zone of the Milky Way and M31 from chemical evolution models with gas radial flows
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Galactic habitable zone around M and FGK stars with chemical evolution models that include dust
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The Habitability of Our Evolving Galaxy
Galactic evolution and the increasing opportunities for life
  • G. Konesky
  • Physics, Geology
    Optics & Photonics - Optical Engineering + Applications
  • 2013
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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
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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.
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In this article we present a detailed spectroscopic analysis of more than 50 extra-solar planet host stars. Stellar atmospheric parameters and metallicities are derived using high resolution and high
An Estimate of the Age Distribution of Terrestrial Planets in the Universe: Quantifying Metallicity as a Selection Effect
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