Free Access
Table A.1
List of notations.
| Symbol | Description |
|---|---|
| ε3D or ε2D | 3D or 2D pebble accretion efficiency (probability of capture) |
| ε0 | Pebble accretion efficiency for planets on circular orbits |
| εset | Pebble accretion efficiency in the settling regime |
| εbal | Pebble accretion efficiency in the ballistic regime |
| A2D | Prefactor of pebble accretion efficiency in 2D |
| am | Acceleration for type I migration |
| ae | Acceleration for the eccentricity damping |
| ap | Planet semimajor axis |
| b | Impact parameter in the local frame |
| bset | Accretion radius in the settling regime |
| bbal | Accretion radius in the ballisitc regime |
| ep | Planet eccentricity |
| eeq | Equilibrium eccentricity at resonance |
| Ωp | Keplerian angular velocity at planet’s location |
| η | Headwind prefactor |
| Σgas | Gas surface density |
| ΣP | Pebble surface density |
| ρgas | Gas volume density |
| ρP | Pebble volume density |
| fset | Attenuation factor |
| Hgas | Gas disk scaleheight |
| HP | Pebble disk scaleheight |
| hgas | Gas disk aspect ratio |
| hP | Pebble disk aspect ratio |
| Mp | Planet mass |
| Mp,sio | Pebble isolation mass |
| M⋆ | Star mass |
| Nhit | Number of pebbles hit onto the planet in the global simulation |
| Ntot | Total number of pebbles initially given in the global simulation |
| P | gas disk pressure |
| qp | Mass ratio between the planet and the star |
| RH | Hill radius of the planet |
| RBondi | Bondi radius of the planet |
| Rp | Planet physical radius |
| rp | Distance between the planet and the central star |
| r | Distance between the pebble and the central pebble |
| tstop | Stopping time of the pebble |
| tsyn | Synodical time of the pebble |
| τm | Type I migration timescale |
| τe | Eccentricity damping timescale |
| τs | Dimensionless stopping time (τs = tsΩK) |
| vesc | Planet escape velocity |
| v* | Transition velocity from the settling regime to the ballistic regime |
| vr | Radial drift velocity of the pebble |
| vϕ | Azimuthal velocity of the pebble |
| vhw | Headwind velocity of disk gas |
| vsh | Keplerian shear velocity between the planet and the pebble |
| vecc | Relative velocity between a planet on an eccentric and a circular orbit |
| vcir | Relative velocity between the pebble and the planet on a circular orbit |
| vK | Keplerian velocity at planet’s location |
| Ṁ PA | Pebble mass accretion rate onto the planet |
| Ṁ disk | Pebble mass flux in the disk |
| Δrp | Distance between the pebble and the planet |
| Δv | Relative velocity between the pebble and the planet |
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.