Table 3.
Minimum orbital decay time τDF, min of GC3 and GC4 in the LC and WC models for the Fornax dSph, found in the region V > c− and δρ/ρ0 < 1 (for which perturbation theory is properly valid), with the CDM result given by Eq. (87) for comparison.
| GC label and model | τDF, min | τDF, CDM | V > c− | δρ/ρ0 < 1 | Equation (82) |
|---|---|---|---|---|---|
| [Myr] | [Myr] | ||||
| GC3 & LC | 122 | 883 | g/m2 < 1.8 × 10−4 | g/m2 > 1.2 × 10−6 | g/m2 < 1.0 × 10−3 |
| GC3 & WC | 197 | 1327 | g/m2 < 2.5 × 10−4 | g/m2 > 2.7 × 10−6 | g/m2 < 2.0 × 10−4 |
| GC4 & LC | 67 | 515 | g/m2 < 5.4 × 10−5 | g/m2 > 4.0 × 10−7 | g/m2 < 1.0 × 10−3 |
| GC4 & WC | 97 | 635 | g/m2 < 2.5 × 10−4 | g/m2 > 5.5 × 10−7 | g/m2 < 2.0 × 10−4 |
Notes. The listed values are essentially constant for all temperatures for which the assumptions made are valid, T/Tc ≲ 0.1. For V < c−, perturbation theory instead predicts the dynamical friction to quickly vanish, causing τDF to become infinite. The criterion on g/m2 due to the hydrostatic core radius, Eq. (82), is also listed. The values for g/m2 are given in units of eV−4.
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.