Open Access
Table 3
Parameter ranges that might work for reproducing the Solar System.
| Symbol | Meaning | Comments |
|---|---|---|
| Mdisk | Total disk mass | Mdisk ≳ 0.1M⊙ for vf ~ 1 m s−1 and Mdisk ≳ 0.02M⊙ for vf ≳ 10 m s−1 |
| rc | Char. radius | ≲50 au |
| γ | Initial inner column dust | For vf ≳ 10 m s−1 γ ~ 0.5−1. For vf ≳ 1 m s−1 and Mdisk ≳ 0.1M⊙, |
| and gas density power-law index | γ ~ 0.5 might work, but γ ~ 1 seems more likely | |
| vf | Frag. speed | ≳1 m s−1 to allow pebbles with St ≳ 10−2 to form |
| Z0 | Initial dust-to-gas ratio | 0.01 ≲ Z0 ≲ 0.03 works more or less equally well, whereas Z0 ≲ 0.003 fails |
| τf | Trap formation time | Traps needed at least 300 torb to form outside of 50 au or never formed there |
| αt | Turbulence parameter | αt ~ 10−5−10−3 (or only up to a few 10−4 if vf ~ 1 m s−1) |
| ε | Planetesimal formation efficiency | 0.002 < εhg∕d ≲ 0.06 (if ε and d∕hg are constant) |
| LX | X-ray luminosity | For rc ≲ 20 au, photoevaporation does not affect the final planetesimal profile |
| significantly |
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.