Effects of Solid Disk Mass (Theory)
- Limited work available.
- Wetherill (1996):
- Late-stage terrestrial planet formation with Jupiter and Saturn.
- Used Monte-Carlo techniques.
- Studied limited range of disk mass.
- But, found a roughly linear relationship between planet mass and disk mass:
- Planets smaller than 0.2 are probably not habitable (Williams et al).
- Kokubo & Ida (2002):
- Studied oligarchic growth only.
- Tried to extrapolate and predict what their systems would look like.
- Found in systems with a disk mass 5X Solar, terrestrial planets grow fast and big.
- giant planets at 1AU.
So, what will our TPF/Darwin see?
Theory: Get habitable planets only over a factor of 25 in disk mass.
Observations: Disk mass varies by a factor of 1500.
2% of G stars should have habitable terrestrial planets !!! TPF will look at ~150 stars.
This does not consider:
- Role of giant planets - dynamical instability of giant planets.
- If TPF/Darwin can see 0.2 planets.