Table 2
Data sources for continuum bound-free (bf) and free-free (ff) absorption as well as scattering processes included in the Blue opacity code.
| Absorption/scattering | Reference |
|---|---|
| H− bf | McLaughlin et al. (2017) |
| H− ff | Bell & Berrington (1987) |
| H bf | Barklem & Piskunov (2016) |
| H ff | Hummer (1988) |
| He− ff | John (1995) |
| Li− ff | John (1975) |
| C− ff | Bell et al. (1988) |
| N− ff | Ramsbottom et al. (1992) |
| O−, Ne−, Na−, Ar− ff | John (1975) |
| Kr−, Xe−, Cs−, Hg− ff | John (1975) |
| H− ff | Bell (1980) |
| H2+ ff | Stancil (1994) |
| N−, O−, CO−, H2O− ff | John (1975) |
| He I, He II bf | TOPbase (a) |
| C I, C II, C III bf | TIPbase (b) |
| N I, N II, N III bf | TIPbase |
| O I, O II, O III bf | TIPbase |
| Ne I, Ne II, Ne III bf | TOPbase |
| Na I, Na II, Na III bf | TOPbase |
| Mg I, Mg II, Mg III bf | TOPbase |
| Al I, Al II, Al III bf | TOPbase |
| Si I, Si II bf | TIPbase |
| Si III bf | TOPbase |
| S I bf | TOPbase |
| S II, S III bf | TIPbase |
| Ar I, Ar II, Ar III bf | TOPbase |
| Ca I, Ca II, Ca III bf | TOPbase |
| Fe I, Fe II, Fe III bf | TIPbase |
| Ni II bf | TIPbase |
| Electron scattering | Thomson (1912) |
| H I Rayleigh scattering (c) | Lee & Kim (2004) |
| He I Rayleigh scattering (d) | Langhoff et al. (1974) |
Notes. (a) TOPbase is the Opacity Project online atomic database (Cunto & Mendoza 1992; Cunto et al. 1993), available at https://cds.unistra.fr/topbase/topbase.html (b) TIPbase contains atomic data computed for the IRON Project (Hummer et al. 1993), available at https://cdsweb.u-strasbg.fr/tipbase/home.html (c) For wavelengths λ > 150 nm.(d) For wavelengths λ > 92 nm.
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