Table 2.
Input parameters of Cloudy models.
| Fixed parameters | |
|---|---|
| Stellar population | BPASS v2.1(1) (Eldridge et al. 2017) |
| Broken power-law IMF | |
| α1 (0.1 M⊙ – 0.5 M⊙) = −1.30 | |
| α2 (0.5 M⊙ – 100 M⊙) = −2.35 | |
| Single burst, including binary stars | |
| X-ray component | Multicolor blackbody(Mitsuda et al. 1984),Tout = 103K, variable Tin |
| Other fields | Cosmic microwave background |
| Cosmic ray background 0.5log | |
| Grains | SMC graphite/silicate model (Weingartner & Draine 2001) |
| Zdust, qPAH | Values scaled with metallicity based on the analytical fits from Galliano et al. (2021) |
| X/O profiles (2) | N(1), C(1), Ne(2), S(2), Ar(2), Fe(2), Si(3), Cl(4) |
| Other elements | Table ISM from Cloudy |
| Density law | nH = nH, HII× (1+N(H)/[1021 cm−2]) |
| Stopping criteria | AV = 10 or Te = 10K |
| 8 varied parameters | |
| log(L*/L⊙) | [7, 9] |
| LX/L* | [0, 0.001, 0.01, 0.1] |
| log(TX, in) | [5, 6, 7] K |
| log([O/H]) | [−2.190, −1.889, −1.190,−0.889, −0.667, −0.491,−0.190, 0.111] |
| Age of burst | [1,2,3,4,5,6,8,10] Myr |
| log(nH) | [0,1,2,3,4] cm−3 |
| log(Uin) (3) | [−4, −3, −2, −1, 0] |
| Cut (4) | [0,4], step = 0.25 |
Notes.
Metallicity bins in BPASS are Z = 10−5, 10−4, 0.001, 0.002, 0.003, 0.004, 0.006, 0.008, 0.010, 0.014, 0.020, 0.030 and 0.040 (i.e. 0.05% of solar to twice solar). We note that Z⊙ = 0.02 while the default value we use here is Z⊙ = 0.014.
The input ionization parameter, Uin, is set by varying the inner radius for a given luminosity. It is described in Sect. 3.2.3.
The cut parameter controls the stopping depth of a given model. It is described in Sect. 3.2.3.
References.
References for elemental abundances. (1): Nicholls et al. 2017, (2): Izotov et al. 2006, (3): Izotov & Thuan 1999, (4): fixed at −3.4.
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