Diversity of planetary systems in low-mass disks: Terrestrial-type planet formation and water delivery

RONCO, M. P.; DE ELÍA, G. C.

Namur

Simposio; IAU-Symposium: Complex Planetary Systems; 2014

International Astronomical Union (IAU)

Several studies, observational and theoretical, suggest that planetary systems with only rocky planets are the most common in the Universe. We study the diversity of planetary systems that might form around Sun-like stars in low-mass disks without gas-giant planets. We focus on the formation of terrestrial planets in the habitable zone (HZ) and analyze their water contents to determine systems of astrobiological interest. All our simulations form planets in the HZ with different masses and final water contents depending on three different density profiles. The steeper profile shows distinctive results because it is the only one that forms water worlds and because forms Earths and Super-Earths around the snow line, which can be discovered by the microlensing technique.