IAFE   05512
INSTITUTO DE ASTRONOMIA Y FISICA DEL ESPACIO
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
Towards astrobiological experimental approaches to study UV surface environments: from the early Solar System to exoplanets
Autor/es:
ABREVAYA, X.C.
Reunión:
Simposio; XXX General Assembly of the International Astronomical Union, Symposium 345: From the protosun to the first steps of life; 2018
Resumen:
The stellar ultraviolet radiation (UVR) has been studied in the last decade andhas 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 andhabitability have missed some fundamental aspects: i) Accurate estimation of the planetaryatmospheric attenuation, ii) The biological inferences used to represent the impact of the stellarUVR 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 planetarybodies may be inaccurate. In this work, we propose how to address these studies in a moreaccurate way through an interdisciplinary approach that combines astrophysics, microbiology,and photobiology and by the use of specially designed laboratory experiments.