INVESTIGADORES
MAUAS Pablo Jacobo David
congresos y reuniones científicas
Título:
The UV limits of life on extrasolar planets: an experiment with halophile archaeabacteria at different UV doses.
Autor/es:
ABREVAYA, X. C.; ADAMO, H.; CORTÓN, E.; MAUAS, P.J.D.
Lugar:
Argentina
Reunión:
Congreso; Boletín de la Asociación Argentina de Astronomía; 2009
Institución organizadora:
Asociación Argentina de Astronomía
Resumen:
Terrestial-type planets around M stars are proposed as feasible places
for development of life as we know it. Nevertheless many dMe stars emit
large amounts of UV radiation during flares and it is unknown if these
events could be deleterious for life. Since terrestrial biological
systems are particularly vulnerable to this kind of radiation, this fact
could set a limit for habitability. Organisms as halophile
archaeabacteria were found in ancient evaporites on Earth. Evaporites
have been detected in Martian meteorites, so these organisms are
proposed as plausible inhabitants of Mars-like planets or other
extrasolar planets. We examine the effect of UV-C on the halophile
archaea Natrialba magadii. Results show that these organisms are able to
survive at the UV doses tested.