Astrophysics and Space Science

, 325:25

Habitable zones and UV habitable zones around host stars

  • Jianpo Guo
  • Fenghui Zhang
  • Xianfei Zhang
  • Zhanwen Han
Original Article

DOI: 10.1007/s10509-009-0173-9

Cite this article as:
Guo, J., Zhang, F., Zhang, X. et al. Astrophys Space Sci (2010) 325: 25. doi:10.1007/s10509-009-0173-9

Abstract

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 cannot go along. We try to obtain the continuous ultraviolet habitable zones, and compare the ultraviolet habitable zones with the habitable zones of host stars. Using the boundary ultraviolet radiation of ultraviolet habitable zone, we calculate the ultraviolet habitable zones of host stars with masses from 0.08 to 4.00 M. For the host stars with effective temperatures lower than 4,600 K, the ultraviolet habitable zones are closer than the habitable zones. For the host stars with effective temperatures higher than 7,137 K, the ultraviolet habitable zones are farther than the habitable zones. For a hot subdwarf as a host star, the distance of the ultraviolet habitable zone is about ten times more than that of the habitable zone, which is not suitable for the existence of life.

Ultraviolet: starsStars: subdwarfsAstrobiology

Copyright information

© Springer Science+Business Media B.V. 2009

Authors and Affiliations

  • Jianpo Guo
    • 1
    • 2
  • Fenghui Zhang
    • 1
  • Xianfei Zhang
    • 1
    • 2
  • Zhanwen Han
    • 1
  1. 1.National Astronomical Observatories/Yunnan ObservatoryChinese Academy of SciencesKunmingP.R. China
  2. 2.Graduate School of the Chinese Academy of SciencesChinese Academy of SciencesBeijingP.R. China