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Table 1
Input parameters for the photoionization models.
| Parameter | Values |
|---|---|
| JY20 model (fiducial model in this work, Ji & Yan 2020) | |
| log(U) | − 4.0, − 3.75, − 3.5, − 3.25, − 3.0, − 2.75, − 2.5, − 2.25, − 2.0, − 1.75, − 1.5 |
| log(Z∕Z⊙) | − 1.3, − 0.7, − 0.4, 0.0, 0.3, 0.5 |
| log(nH∕cm−3) | 1.15 |
| Geometry | Plane-parallel |
| Stellar SED | STARBURST99 model with a continuous SFH of 4 Myr |
| Solar abundance set | Grevesse et al. (2010) solar abundance set |
| Nitrogen prescription | Dopita et al. (2013) prescription |
| Depletion factor | Default depletion set in CLOUDY (Cowie & Songaila 1986; Jenkins 1987) |
| L10 model (Levesque et al. 2010) | |
| log(U) | − 3.5, − 3.2, − 2.9, − 2.6, − 2.5, − 2.2, − 1.9 |
| log(Z/Z⊙) | − 1.3, − 0.7, − 0.4, 0.0, 0.3 |
| log(nH∕cm−3) | 2.0 |
| Geometry | Plane-parallel |
| Stellar SED | STARBURST99 model with a continuous SFH of 6 Myr |
| Solar abundance set | Anders & Grevesse (1989) solar abundance set (E. Levesque, priv. comm.) |
| Nitrogen prescription | Unspecified |
| Depletion factor | Unspecified |
| D13 model (κ →∞, Dopita et al. 2013) | |
| log(U) | − 4.0, − 3.7, − 3.5, − 3.2, − 3.0, − 2.7, − 2.5, − 2.2, − 2.0 |
| log(Z∕Z⊙) | − 1.3, − 1.0, − 0.7, − 0.5, − 0.3, 0.0, 0.3, 0.5, 0.7 |
| log(nH∕cm−3) | 1.0 |
| Geometry | Spherical |
| Stellar SED | (Old) STARBURST99 model with a continuous SFH of 4 Myr (see Dopita et al. 2000) |
| Solar abundance set | Grevesse et al. (2010) solar abundance set |
| Nitrogen prescription | Dopita et al. (2013) prescription |
| Depletion factor | Depletion set described in Kimura et al. (2003) and Dopita et al. (2005) |
| B17 model (extracted from PYTHON-FSPS, Byler et al. 2017) | |
| log(U) | − 4.0, − 3.5, − 3.0, − 2.5, − 2.0, − 1.5, − 1.0 |
| log (Z∕Z⊙) | − 2.0, − 1.5, − 1.0, − 0.6, − 0.4, − 0.3, − 0.2, − 0.1, 0.0, 0.1, 0.2 |
| log (nH ∕cm−3) | 2.0 |
| Geometry | Spherical |
| Stellar SED | FSPS model with an instantaneous SFH of 1 Myr |
| (MIST evolutionary track, see Dotter 2016 and Choi et al. 2016) | |
| Solar abundance set | Anders & Grevesse (1989) solar abundance set |
| Nitrogen prescription | Dopita et al. (2000) prescription |
| Depletion factor | Depletion set described in Dopita et al. (2000) |
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