Open Access
Table 1.
Definitions of key variables.
| Variable | Definition | Reference |
|---|---|---|
| Model | ||
| n | Sérsic index | Sect. 2.1 |
| Re | Projected 2D Sérsic effective radius | Sect. 2.1 |
| q0 | Intrinsic axis ratio c/a | Sect. 2.1 |
| Geometry | ||
| R | Radius in the midplane | Sect. 2.1 |
| z | Height above the midplane | Sect. 2.1 |
 |
Spheroid isodensity surface distance | Sect. 2.1 |
| Derived | ||
| ρ(m) | 3D deprojected density | Sect. 2.1 |
| vcirc(R) | Circular velocity in the midplane, accounting for non-spherical potentials | Sect. 2.2 |
| Msph(< r = R) | Mass enclosed within a sphere of radius r = R | Sect. 2.3 |
| Mspheroid(< m = R) | Mass enclosed within spheroid with isodensity surface distance m = R and intrinsic axis ratio q0 | Sect. 2.3 |
| r1/2, mass, 3D | 3D spherical half-mass radius (assuming constant M/L) | Sect. 2.4 |
| k3D(Re) | 3D enclosed mass virial coefficient relating vcirc(R) to Msph(< r = R) | Sect. 3 |
| ktot(R) | Total virial coefficient relating vcirc(R) to Mtot | Sect. 3 |
 |
Dark matter fraction defined as ratio of dark matter to total mass enclosed within a sphere of radius r = R | Sect. 4.2 |
 |
Dark matter fraction defined as ratio of dark matter to total circular velocities squared at radius R | Sect. 4.2 |
| α(R) | Pressure support correction (= − dlnρg/dlnR for constant dispersion) | Sect. 5.1 |
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.