Table 3.
EW values measured from the N IVλ4058 and N IIIλ4640 lines present in the X-SHOOTER optical spectra of the sources of the O-star sample.
| Star ID | EW[N IVλ4058] | EW[N Vλ4640] | V | Av |
|---|---|---|---|---|
| (Å) | (Å) | (mag) | (mag) | |
| VPHAS-1273 | –0.17(2) | –0.04(1) | 14.22 | 6.67 |
| VPHAS-1338 | –0.11(1) | –0.10(1) | 13.87 | 6.17 |
| MSP182 | –0.07(1) | –0.08(1) | 14.49 | 6.40 |
| MSP183 | –0.31(1) | –0.16(1) | 14.53 | 6.40 |
| MSP199 | –0.05(1) | –0.07(1) | 13.86 | 6.40 |
Notes. V-band magnitudes of the sources of the O-star sample are provided: MSP182 magnitudes are from Rauw et al. (2007); MSP183 and MSP199 – F555W and F814W magnitudes are provided by the Hubble Space Telescope Legacy Archive transformed using the results of Harris (2018); and the VPHAS sources are from Lasker et al. (2008). The AV values are from the work of Drew et al. (2018).
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