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1 results

  • Towards astrobiological experimental approaches to study planetary UV surface environments

  • Ximena C. Abrevaya, Martin Leitzinger, Oscar J. Oppezzo, Petra Odert, G. Juan M. Luna, Manish Patel, Ana F. Forte-Giacobone, Arnold Hanslmeier
  • Journal:
    Proceedings of the International Astronomical Union / Volume 14 / Issue S345 / August 2018
    Published online by Cambridge University Press:
    13 January 2020, pp. 222-226
    Print publication:
    August 2018
    • Article
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  • The stellar ultraviolet radiation (UVR) has been studied in the last decade and has been found to be an important factor to determine the habitability of planetary surfaces. It is known that UVR can be a constraint for life. However, most of the studies of UVR and habitability have missed some fundamental aspects: i) Accurate estimation of the planetary atmospheric attenuation, ii) The biological inferences used to represent the impact of the stellar UVR on life are theoretical and based on the action spectrum (for DNA or microorganisms) or considering parameters as the “lethal dose” obtained from non-astrobiological experiments. Therefore, the conclusions reached by previous studies about the UVR habitability of planetary bodies may be inaccurate. In this work, we propose how to address these studies in a more accurate way through an interdisciplinary approach that combines astrophysics, microbiology, and photobiology and by the use of specially designed laboratory experiments.