Table 3
Rest-Frame equivalent width measurements for the seven Fe ii* emitters in the UDF-10 field (not corrected for emission infilling).
| Multiplet | Line | UDF-0008 | UDF-0011 | UDF-0012 | UDF-0013 | UDF-0016 | UDF-0032 | UDF-0036 | |
| (1) | (2) | (3) | (4) | (5) | (6) | (7) | (8) | (9) | |
|
|
|||||||||
| UV3 | Fe iiλ2344 | + 2.11 ± 0.19 | + 1.36 ± 0.15 | – | – | + 2.79 ± 0.38 | + 1.56 ± 0.23 | + 1.44 ± 0.41 | |
| UV2b | Fe iiλ2374b | + 1.64 ± 0.17 | + 1.29 ± 0.14 | – | – | + 1.81 ± 0.36 | + 1.34 ± 0.24 | + 1.29 ± 0.33 | |
| UV2a | Fe iiλ2382a | + 2.23 ± 0.18 | + 1.88 ± 0.12 | −0.01 ± 0.33 | + 0.97 ± 0.37 | + 2.45 ± 0.36 | + 1.35 ± 0.24 | + 1.12 ± 0.33 | |
| UV1b | Fe iiλ2586 | + 2.24 ± 0.15 | + 2.14 ± 0.11 | + 2.22 ± 0.19 | + 1.96 ± 0.20 | + 2.31 ± 0.30 | + 1.32 ± 0.32 | + 2.77 ± 0.31 | |
| UV1a | Fe iiλ2600 | + 2.37 ± 0.16 | + 1.86 ± 0.11 | + 2.45 ± 0.19 | + 1.68 ± 0.21 | + 3.45 ± 0.31 | + 1.63 ± 0.32 | + 2.20 ± 0.33 | |
| – | Mg iiλ2796 | + 3.58 ± 0.15 | + 2.00 ± 0.12 | + 1.67 ± 0.62 | + 1.64 ± 1.15 | + 3.71 ± 0.29 | + 0.22 ± 0.24 | + 1.02 ± 0.27 | |
| – | Mg iiλ2803 | + 3.23 ± 0.16 | + 1.91 ± 0.12 | + 0.86 ± 0.14 | + 2.18 ± 0.22 | + 4.06 ± 0.33 | + 0.70 ± 0.31 | + 1.31 ± 0.26 | |
| – | Mg iλ2852 | + 0.83 ± 0.15 | + 0.66 ± 0.11 | + 1.22 ± 0.16 | + 0.74 ± 0.21 | + 0.81 ± 0.34 | + 1.10 ± 0.28 | + 0.69 ± 0.26 | |
| UV3 | Fe ii*λ2365 | −0.05 ± 0.13 | −0.36 ± 0.10 | – | – | −0.04 ± 0.22 | −0.43 ± 0.21 | −0.54 ± 0.28 | |
| UV3 | Fe ii*λ2381a | – | – | – | – | – | – | – | |
| UV2b | Fe ii*λ2396c | −0.11 ± 0.12 | −0.70 ± 0.10 | −0.99 ± 0.23 | −0.62 ± 0.25 | −0.57 ± 0.25 | −0.55 ± 0.21 | −0.99 ± 0.27 | |
| UV1a | Fe ii*λ2612 | −0.46 ± 0.11 | −0.23 ± 0.08 | −1.21 ± 0.18 | −0.47 ± 0.21 | −0.06 ± 0.20 | −0.44 ± 0.22 | −0.88 ± 0.29 | |
| UV1a | Fe ii*λ2632 | – | – | – | – | – | – | – | |
| UV1b | Fe ii*λ2626 | −0.81 ± 0.11 | −0.26 ± 0.08 | −2.12 ± 0.17 | −0.82 ± 0.21 | −0.33 ± 0.20 | −0.79 ± 0.22 | −1.09 ± 0.25 | |
| – | [O ii]λ3727 | −21.1 ± 0.3 | −34.1 ± 0.2 | −39.6 ± 0.1 | −42.0 ± 0.2 | −20.2 ± 0.6 | −69.7 ± 0.6 | −56.1 ± 0.3 | |
Notes. Column (1): multiplet; Col. (2): transition wavelength; Cols. (3)–(7): rest-frame equivalent width for each galaxy. Emission is negative and absorptions is positive.
Fe ii λ2382 is a pure resonant absorption line with no associated Fe ii* emission, but blended with the weak Fe ii*λ2381 from UV3 multiplet.
Fe ii λ2374 is effectively free of emission infilling, because nearly all photons absorbed at Fe iiλ2374 are re-emitted at the non-resonant Fe ii*λ2396 line (Tang et al. 2014; Zhu et al. 2015).
Fe ii*λ2396 is therefore an almost purely fluorescent emission line, since ~ 90% of photons absorbed at Fe iiλ2374 are re-emitted at the non-resonant Fe ii*λ2396 line (Tang et al. 2014; Zhu et al. 2015).
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