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Table 5
Model parameters, including the collapse time t, the central hydrogen nuclei number density n0, the flat radiusr0, and the asymptotic power index a.
| Model | n0 = 5 × 104 cm−3 | n0 = 1 × 105 cm−3 | n0 = 4 × 105 cm−3 | n0 = 1 × 106 cm−3 |
|---|---|---|---|---|
| BES1 | t = 5.73 × 105 yr | t = 8.29 × 105 yr | t = 1.06 × 106 yr | t = 1.12 × 106 yr |
| r = 9.58 × 103 au | r = 6.96 × 103 au | r = 3.67 × 103 au | r = 2.41 × 103 au | |
| a = 2.40 | a = 2.40 | a = 2.40 | a = 2.40 | |
| BES4 | – | t = 3.18 × 104 yr | t = 1.28 × 105 yr | t = 1.56 × 105 yr |
| r = 1.23 × 104 au | r = 5.59 × 103 au | r = 3.31 × 103 au | ||
| a = 2.26 | a = 2.04 | a = 2.00 | ||
| AD | t = 1.57 × 107 yr | t = 1.58 × 107 yr | t = 1.60 × 107 yr | t = 1.61 × 107 yr |
| r = 1.89 × 104 au | r = 1.35 × 104 au | r = 6.88 × 103 | r = 4.13 × 103 au | |
| a = 2.34 | a = 2.30 | a = 2.25 | a = 2.23 | |
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