Table 1.
Parameters of the simulations.
| (1) | (2) | (3) | (4) | (5) | (6) | (7) | (8) | (9) |
|---|---|---|---|---|---|---|---|---|
| Model description | Mass range [M⊙] | IMF slope(α) | CCSNe | FSNe | PISNe | Critical | Density | Metal ejection |
| Model ID | Pop II | Pop II | Pop II | Pop II | M [M⊙] | metallicity | threshold | radius |
| Pop III | Pop III | Pop III | Pop III | E [1051 erg] | [Fe/H]c | ρSFR,c [atom cm−3] | Rejecta[pc] | |
| Models with only Pop II stars | ||||||||
| PopII | [0.05, 50] | [0.7, −0.8, −1.7, −1.3] | [8, 30] | [30, 50] | – | – | 5 | 300 |
| – | – | – | – | – | ||||
| Models with Pop III stars | ||||||||
| PopII+PopIII(CCSNe) | [0.05, 50] | [0.7, −0.8, −1.7, −1.3] | [13, 30] | [30, 50] | – | −5 | 5 | 300 |
| [13, 140] | −1.3 | [13, 140] | – | – | ||||
| Models with Failed SNe | ||||||||
| PopII+PopIII(CCSNe+FSNe) | [0.05, 50] | [0.7, −0.8, −1.7, −1.3] | [13, 30] | [30, 50] | – | −5 | 1 , 5 | hi, 300 |
| [13, 140] | −1.3 | [13, 30] | [30, 140] | – | ||||
| Models with PISNe | ||||||||
| PopII+PopIII(CCSNe+FSNe)+PISNe | [0.05, 50] | [0.7, −0.8, −1.7, −1.3] | [13, 30] | [30, 50] | [140, 300] | −5 | 5 | 300 |
| [13, 300] | −1.3 | [13, 30] | [30, 140] | [9, 50] | ||||
| Models with decreasing PISNe feedback energy | ||||||||
| PopII+PopIII(CCSNe+FSNe)+PISNe(E51) | [0.05, 50] | [0.7, −0.8, −1.7, −1.3] | [13, 30] | [30, 50] | [140, 300] | −5 | 5 | 300 |
| [13, 300] | −1.3 | [13, 30] | [30, 140] | 1 | ||||
| Models with increasing critical metallicty | ||||||||
| PopII+PopIII(CCSNe+FSNe)+PISNe(Z-4) | [0.05, 50] | [0.7, −0.8, −1.7, −1.3] | [13, 30] | [30, 50] | [140, 300] | −4 | 5 | 300 |
| [13, 300] | −1.3 | [13, 30] | [30, 140] | [9, 50] | ||||
Notes. Columns are as follows: 1) Model description and ID. 2) Mass range of Pop II and Pop III stars. 3) IMF slopes. 4) Mass range of Pop II and Pop III stars that fall into a CCSNe, for which a feedback energy of 1051 erg is assumed. 5) Mass range of Pop II and Pop III stars that fail to explode and fall into black holes. 6) Mass range of Pop III stars forming PISNe and the feedback energy released after their explosion. 7) Critical gas metallicity below which only Pop III stars form. Above this metallicity only Pop II stars form. 8) Density threshold in gas clouds, ρSFR, c, required for the onset of star formation. 9) Radius, Rejecta, around each supernova in which metals are ejected.
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