Ultraviolet Habitable zones around three hundreed F, G, K and M dwarf stars

LEMARCHAND, G. A.; BUCCINO, A. P.; MAUAS, P. J. D.

San Juan, Puerto Rico

Conferencia; Bioastronomy 2007-Molecules, Microbes and Extraterrestrial Life; 2007

Ultraviolet radiation is known to inhibit photosynthesis, induce DNA destruction and cause damage to a wide variety of proteins and lipids. In particular, UV radiation between 200 and 300 nm becomes energetically very damaging to most of the terrestrial biological systems. On the other hand, UV radiation is usually considered one of the most important energy source on the primitive Earth for the synthesis of many biochemical compounds and, therefore, essential for several biogenesis processes. In this work we apply our model of UV Habitable Zone (Buccino et al., Icarus, 183 (2006) 491-503) to study the UV constraints for the origin and the development of life on for a set of near 300 F to M dwarfs stars. Using the vast statistics of near 2000 observations, we analyze the influence of long and short scale stellar activity in the origin and the development of life at extrasolar planet.