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Cited by 36Space Science and Extraterrestrial LifeStellar, planetary, and galactic studiesEarth Systems and Cosmic Evolution

Habitability around F-type stars

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Sato, S., Cuntz, M., Guerra Olvera, C. M., Jack, D., Schröder, K.-P.·2014·International Journal of Astrobiology
DOI 10.1017/s1473550414000020
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Abstract

We explore the general astrobiological significance of F-type main-sequence stars with masses between 1.2 and 1.5 M⊙. Special consideration is given to stellar evolutionary aspects due to nuclear main-sequence evolution. DNA is taken as a proxy for carbon-based macromolecules following the paradigm that extraterrestrial biology may be most likely based on hydrocarbons. Consequently, the DNA action spectrum is utilized to represent the impact of the stellar ultraviolet (UV) radiation. Planetary atmospheric attenuation is taken into account based on parameterized attenuation functions. We found that the damage inflicted on DNA for planets at Earth-equivalent positions is between a factor of 2.5 and 7.1 higher than for solar-like stars, and there are intricate relations for the time-dependence of damage during stellar main-sequence evolution. If attenuation is considered, smaller factors of damage are obtained in alignment to the attenuation parameters. This work is motivated by earlier studies indicating that the UV environment of solar-type stars is one of the most decisive factors in determining the suitability of exosolar planets and exomoons for biological evolution and sustainability.

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Crossref · 10.1017/s1473550414000020

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3 of 3 references verified0 citation errors · 0 not checkable

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  • Limited opportunities for circumstellar habitability may still exist for F-type stars.

    “though limited opportunities for circumstellar habitability may still exist (e.g., Cockell 1999; Sato et al. 2014).”

    From ABOUT EXOBIOLOGY: THE CASE FOR DWARF K STARS (2016) · cites this paper as Sato et al. 2014

  • The t_ev is relatively short for early and mid F-type stars but very prolonged for the more slowly evolving, cooler, low-mass main-sequence K- and M-type stars.

    “This time of t ev , usually referred to as timescale of the continuous habitable zone (in reference to CHZ or GHZ), describing the region (or duration of time) when a planet can be continuously habitable (i.e., able to maintain liquid water on its surface) is relatively short for early and mid F-type stars, see also Sato et al. (2014) for further results, but very prolonged for the more slowly ev”

    From ABOUT EXOBIOLOGY: THE CASE FOR DWARF K STARS (2016) · cites this paper as Sato et al. (2014)

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Authors
Sato, S., Cuntz, M., Guerra Olvera, C. M., Jack, D., & Schröder, K.-P.
Affiliations
  • The University of Texas at Arlington (US)
  • Universidad de Guanajuato (MX)
Corresponding author
Cuntz, M.
Venue
International Journal of Astrobiology
Publisher
Cambridge University Press (CUP)
Published
2014-03-25
Volume
13
Issue
3
Pages
244-258
ISSN
  • 1473-5504 (ISSN-L)
  • 1475-3006
DOI
10.1017/s1473550414000020
OpenAlex
W2066621424
Cited by
36
References
3
Citations by year
2026: 1 · 2024: 1 · 2023: 2 · 2022: 2 · 2021: 4 · 2018: 21 · 2017: 2 · 2016: 1 · 2015: 1
FWCI
0.72
Type
journal article
Language
en
Open access
Licence
www.cambridge.org/core/terms (unspecified)
Locations
  • International Journal of Astrobiology (publishedVersion)
  • arXiv (Cornell University) (submittedVersion)
  • arXiv (Cornell University)
Topics
  • Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Space Science and Extraterrestrial Life
  • Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Stellar, planetary, and galactic studies
  • Physical Sciences › Earth and Planetary Sciences › Atmospheric Science › Earth Systems and Cosmic Evolution
Keywords
F-type stars, habitability, exoplanets, exomoons, ultraviolet radiation, DNA damage, astrobiology, exoplanet atmospheres

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