Table 9.
Different normalization for χ2 computation.
| Object | SED | Component | Minimum χ2 | log U | Δlog U | log Z | Δlog Z | log nH | Δlog nH |
|---|---|---|---|---|---|---|---|---|---|
| [Z⊙] | [Z⊙] | [cm−3] | [cm−3] | ||||||
| (1) | (2) | (3) | (4) | (5) | (6) | (7) | (8) | (9) | (10) |
| Normalization over expected value | |||||||||
| LB 2522 | xA | BC | 19.62 | −3.50 | −3.50 – 0.75 | 3.00 | 1.70 – 3.00 | 14.00 | 10.75 – 14.00 |
| PHL 1092 | xA | BC | 45.33 | −0.75 | −2.75 – −0.50 | 3.00 | 1.70 – 3.00 | 14.00 | 12.50 – 14.00 |
| xA | BLUE | 1.93 | −0.25 | −1.00 – 0.50 | 1.70 | 1.70 – 2.70 | 12.50 | 11.25 – 13.75 | |
| Normalization over observed value | |||||||||
| LB 2522 | xA | BC | 4.97 | 0.00 | −2.50 – 1.00 | 1.70 | −2.00 – 2.00 | 7.00 | 7.00 – 11.25 |
| PHL 1092 | xA | BC | 2.78 | −3.25 | −3.25 – −3.00 | 2.70 | 1.70 – 3.00 | 11.50 | 11.00 – 12.00 |
| xA | BLUE | 5.79 | −2.50 | −2.75 – 1.00 | −2.00 | −1.00 – 0.30 | 10.25 | 7.00 – 14.00 | |
Notes. (1) Object’s common name. (2) Adopted SED, with nomenclature used in Table 8. (3) Component measured. (4) Minimum χ2 associated with the object and the component. (5) Decimal logarithm of the ionization parameter, U, associated with the minimum χ2. (6) Logarithmic interval associated with the variation in the ionization parameter, U. (7) Decimal logarithm of the metallicity, Z, associated with the minimum χ2. (8) Logarithmic interval associated with the variation in the metallicity, Z. (9) Decimal logarithm of the hydrogen density, nH, associated with the minimum χ2. (10) Logarithmic interval associated with the variation in the hydrogen density, nH.
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