The snow line in a gas disk is defined as the distance from the star beyond which the water ice is stable against evaporation. Since oxygen is the most abundant element after hydrogen and helium, the presence of ice grains can have important consequences for disk evolution. However, determining the position of the snow line is not simple. I discuss some of the important processes that affect the position of the snow line.
Icy Bodies of the Solar System
- Pub Date:
- Planetary systems: protoplanetary disks;
- solar system: formation;
- Astrophysics - Earth and Planetary Astrophysics
- 8 pages, 5 figures. Invited talk at IAU Symposium 263 - Icy Bodies in the Solar System. Rio de Janeiro, Aug. 2009