Biology
Scientific paper
Aug 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001esasp.496..363l&link_type=abstract
In: Exo-/astro-biology. Proceedings of the First European Workshop, 21 - 23 May 2001, ESRIN, Frascati, Italy. Eds.: P. Ehrenfreu
Biology
Mars Surface, Solar Uv Radiation
Scientific paper
The paper investigates the exposure of solar UV radiation on the Martian surface 3.5 billion years ago on molecules essential for life. We found from our UV radiation model that an ancient 1 bar CO2 atmosphere - by including a photochemical model for the investigation of absorption effects of O2, O3, NO and NO2 - becomes transparent to solar UV radiation above wavelengths of 290 nm. For understanding the damaging effect to a number of molecules essential for the evolution of microbial life we discuss also the survival rate and the functional and structural stability of such molecules in the early Martian surface radiation environment, based on our above mentioned model atmosphere.
Bérces Attila
Kargl Guenter
Kerékgyártó T.
Lammer Helmut
Molina-Cuberos Gregorio J.
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