Search Publications

Habitability around M stars: the action of flares

Buccino, A. P.; Mauas, P. J. D.; Lemarchand, G. A.

We analyzed the UV habitable zones (UV-HZ), defined in Buccino et al. (2006), around planetary dM stars observed by IUE: HIP 74995, HIP 109388, HIP 113020 and around two dMe stars: Ad Leo and EV Lac. We found that moderate flares could be an energy source in the biogenesis processes.

FULL TEXT IN SPANISH

Espectros Multi-Onda de las Estrellas Mas Masivas

Walborn, N. R.

The systematic trends and relationships among normal OB spectra in the optical, ultraviolet, and X-ray domains are reviewed. The last of these are a recent surprise to many specialists, which establish important constraints on the physical origin of the X-ray emission. Some peculiar categories are also described, including CNO anomalies at the ear…