Table 2.
Summary of the MUSE He II λ1640 sample.
| ID | RA | Dec | Field | z | Av | MUV | ΔMUV | He II λ1640 |
||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Flux | Error | FWHM | ||||||||||||
| 1024 | 03: 32: 31.45 | −27: 47: 25.12 | UDF | 2.87 | 0.7 | −21.08 | 0.02 | 177 | 52 | 5 | ||||
| 1036 | 03: 32: 43.39 | −27: 47: 10.54 | UDF | 2.69 | 0.5 | −20.75 | 0.02 | 142 | 53 | 4 | ||||
| 1045 | 03: 32: 33.78 | −27: 48: 14.35 | UDF | 2.61 | 0.4 | −20.57 | 0.03 | 156 | 58 | 4 | ||||
| 1079 | 03: 32: 37.88 | −27: 47: 56.75 | UDF | 2.68 | 0.7 | −20.35 | 0.04 | 290 | 91 | 11 | ||||
| 1273 | 03: 32: 35.48 | −27: 46: 16.91 | UDF | 2.17 | 0.0 | −19.35 | 0.06 | 217 | 79 | 5 | ||||
| 3621 | 03: 32: 39.52 | −27: 48: 53.53 | UDF | 3.07 | 0.0 | −19.34 | – | 213 | 45 | 6 | ||||
| 87 | 22: 32: 54.86 | −60: 33: 42.12 | HDFS | 2.67 | 0.0 | −19.29 | 0.02 | 59 | 12 | 4 | ||||
| 109 | 22: 32: 56.16 | −60: 34: 11.74 | HDFS | 2.2 | 0.5 | −18.89 | 0.02 | 54 | 13 | 3 | ||||
| 144 | 22: 32: 58.93 | −60: 34: 00.07 | HDFS | 4.02 | 0.0 | −19.62 | 0.04 | 48 | 12 | 4 | ||||
| 97 | 10: 00: 34.01 | +02: 03: 57.99 | cgr30 | 2.11 | 0.5 | −18.82 | 0.10 | 306 | 55 | 5 | ||||
| 39 | 04: 22: 00.81 | −38: 37: 03.59 | q0421 | 3.96 | 0.0 | −19.67 | 0.06 | 153 | 33 | 7 | ||||
| 84 | 04: 22: 01.45 | −38: 37: 20.79 | q0421 | 3.1 | 0.0 | −18.90 | – | 161 | 29 | 4 | ||||
| 161 | 04: 22: 01.52 | −38: 37: 19.68 | q0421 | 3.1 | 0.5 | −18.85 | – | 318 | 39 | 9 | ||||
| AGN | ||||||||||||||
| 1051 | 03: 32: 42.84 | −27: 47: 02.53 | UDF | 3.19 | – | – | – | – | – | – | ||||
| 1056 | 03: 32: 39.67 | −27: 48: 50.59 | UDF | 3.07 | – | – | – | – | – | – | ||||
| 78 | 04: 22: 01.49 | −38: 37: 18.34 | q0421 | 3.10 | – | – | – | – | – | – | ||||
| ID | [C III]1907 | C III]1909 | O III]1661 | O III]1666 | Si III]1883 | Si III]1892 | ||||||||
| Flux | Error | FWHM | Flux | Error | Flux | Error | Flux | Error | Flux | Error | Flux | Error | ||
| 1024 | 308 | 49 | 6 | 206 | 42 | 151 | – | 161 | 48 | 238 | – | 317 | – | |
| 1036 | 436 | 36 | 4 | 300 | 41 | 155 | – | 230 | 54 | 167 | 55 | 184 | – | |
| 1045 | 388 | 49 | 4 | 211 | 54 | 186 | – | 200 | 56 | 141 | 38 | 129 | 44 | |
| 1079 | 111 | – | 4 | 111 | – | 162 | – | 81 | – | 64 | – | 118 | – | |
| 1273 | 402 | 48 | 3 | 271 | 47 | 165 | – | 195 | 56 | 141 | 55 | 153 | – | |
| 3621 | 252 | – | 4 | 212 | – | 106 | – | 105 | – | 122 | – | 122 | – | |
| 87 | 78 | 11 | 3 | 33 | 11 | 33 | – | 49 | 11 | 32 | 10 | 47 | 13 | |
| 109 | 71 | 12 | 3 | 63 | 12 | 38 | – | 72 | 13 | 57 | 12 | 36 | – | |
| 144 | – | – | – | – | – | 37 | 11 | 150 | 21 | – | – | – | – | |
| 97 | 369 | 50 | 3 | 258 | 62 | 148 | 43 | 284 | 44 | 131 | – | 134 | – | |
| 39 | – | – | – | – | – | 71 | – | 66 | – | – | – | – | – | |
| 84 | 174 | 47 | 3 | 72 | 23 | 66 | – | 54 | – | 393 | 59 | 156 | 40 | |
| 161 | 143 | – | 3 | 62 | – | 64 | – | 58 | 19 | 181 | – | 130 | – | |
| AGN | ||||||||||||||
| 1051 | – | – | – | – | – | – | – | – | – | – | – | – | – | |
| 1056 | – | – | – | – | – | – | – | – | – | – | – | – | – | |
| 78 | – | – | – | – | – | – | – | – | – | – | – | – | – | |
Notes. All line fluxes are in 1 × 10−20 erg s−1 cm−2 and FWHM in Å. Line fluxes of non-detected lines are shown as 3σ upper limits with their corresponding error shown as a long dash. If the UV magnitude is not detected above the 1σ noise (see Sect. 3.1), the corresponding error spectrum is used to compute an upper limit to the magnitude and the error in magnitude is given as a long dash.
We note UDF 3621 is at a separation of ∼3″ (28 kpc at z ∼ 3) and dz = 0.004 of X-ray confirmed AGN, for which we detect Lyα, C IV, and He II λ1640. It is also < 1″ and dz = 0.001 away from another Lyα emitter for which no He II λ1640 is detected. The He II λ1640 ionisation might therefore be due to the AGN (e.g. Cantalupo et al. 2019) and not to sources internal to the galaxy.
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