Table 5.
Fit parameters for the evolution of fraction of accretors (facc), median Lacc of the accretors and median Ṁacc of the accretors in Sco-Cen clusters with age, where by accretors we mean sources with pEW < − 1.0 nm.
| Exponential Decay | Power Law | ||||||
|---|---|---|---|---|---|---|---|
| y | τacc [Myr] | C | χred2 | α | k | χred2 | |
| facc (pEW < − 1) | 2.7 ± 0.4 | 79 ± 28 | 6.1 | −2.0 ± 0.3 | 281 ± 149 | 3.4 | |
| Lacc | 4.9 ± 3.0 | 4.7 ± 4.2 [10−4 L⊙] | 1.2 | −1.3 ± 0.6 | 1.3 ± 1.7 [10−3 L⊙] | 0.46 | |
| Ṁacc | 4.5 ± 2.4 | 7.6 ± 5.5 [10−11 M⊙/yr] | 0.60 | −1.5 ± 0.6 | 3.1 ± 3.8 [10−10 M⊙/yr] | 0.39 | |
Notes. For each quantity, two fits are preformed: an exponential decay of the form y = C ⋅ exp( − t/τacc), and a power law of the form y = k ⋅ tα. Here, t is the age in Myr. Reduced χ2 values are also reported for each fit.
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