Details of three stars in the centre of the circular shell. The spectral types, SpT, of stars 1 (BAT99 3a) and 2 are based on our spectroscopic observations, while that of star 3 is inferred from the JHKs photometry (see the text for details) and therefore should be considered with caution. The UBVI photometry is from Zaritsky et al. (2004). The coordinates and JHKs photometry are from Kato et al. (2007). The IRAC photometry is from the SAGE LMC and SMC IRAC Source Catalog.
| . | star 1 . | star 2 . | star 3 . |
|---|---|---|---|
| SpT | WN3b+O6 V | B0 V | O8.5 V (?) |
| α (J2000) | |$04^{\rm h} 53^{\rm m} 03{^{s}_{.}}76$| | |$04^{\rm h} 53^{\rm m} 03{^{s}_{.}}60$| | |$04^{\rm h} 53^{\rm m} 03{^{s}_{.}}86$| |
| δ (J2000) | −69°23′51|${^{\prime\prime}_{.}}$|8 | −69°23′53|${^{\prime\prime}_{.}}$|8 | −69°23′50|${^{\prime\prime}_{.}}$|9 |
| U (mag) | 13.167 ± 0.041 | 14.502 ± 0.058 | – |
| B (mag) | 14.210 ± 0.035 | 15.255 ± 0.044 | – |
| V (mag) | 14.391 ± 0.099 | 15.298 ± 0.231 | – |
| I (mag) | 14.402 ± 0.102 | 15.441 ± 0.046 | – |
| J (mag) | 14.630 ± 0.010 | 15.550 ± 0.020 | 16.420 ± 0.040 |
| H (mag) | 14.530 ± 0.040 | 15.600 ± 0.020 | 15.920 ± 0.030 |
| Ks (mag) | 14.610 ± 0.040 | 15.620 ± 0.050 | 15.670 ± 0.070 |
| [3.6] (mag) | 14.053 ± 0.052 | 15.311 ± 0.086 | – |
| [4.5] (mag) | 14.120 ± 0.047 | 15.377 ± 0.077 | – |
| [5.8] (mag) | 13.764 ± 0.069 | – | – |
| [8.0] (mag) | 13.439 ± 0.100 | – | – |
| . | star 1 . | star 2 . | star 3 . |
|---|---|---|---|
| SpT | WN3b+O6 V | B0 V | O8.5 V (?) |
| α (J2000) | |$04^{\rm h} 53^{\rm m} 03{^{s}_{.}}76$| | |$04^{\rm h} 53^{\rm m} 03{^{s}_{.}}60$| | |$04^{\rm h} 53^{\rm m} 03{^{s}_{.}}86$| |
| δ (J2000) | −69°23′51|${^{\prime\prime}_{.}}$|8 | −69°23′53|${^{\prime\prime}_{.}}$|8 | −69°23′50|${^{\prime\prime}_{.}}$|9 |
| U (mag) | 13.167 ± 0.041 | 14.502 ± 0.058 | – |
| B (mag) | 14.210 ± 0.035 | 15.255 ± 0.044 | – |
| V (mag) | 14.391 ± 0.099 | 15.298 ± 0.231 | – |
| I (mag) | 14.402 ± 0.102 | 15.441 ± 0.046 | – |
| J (mag) | 14.630 ± 0.010 | 15.550 ± 0.020 | 16.420 ± 0.040 |
| H (mag) | 14.530 ± 0.040 | 15.600 ± 0.020 | 15.920 ± 0.030 |
| Ks (mag) | 14.610 ± 0.040 | 15.620 ± 0.050 | 15.670 ± 0.070 |
| [3.6] (mag) | 14.053 ± 0.052 | 15.311 ± 0.086 | – |
| [4.5] (mag) | 14.120 ± 0.047 | 15.377 ± 0.077 | – |
| [5.8] (mag) | 13.764 ± 0.069 | – | – |
| [8.0] (mag) | 13.439 ± 0.100 | – | – |
Details of three stars in the centre of the circular shell. The spectral types, SpT, of stars 1 (BAT99 3a) and 2 are based on our spectroscopic observations, while that of star 3 is inferred from the JHKs photometry (see the text for details) and therefore should be considered with caution. The UBVI photometry is from Zaritsky et al. (2004). The coordinates and JHKs photometry are from Kato et al. (2007). The IRAC photometry is from the SAGE LMC and SMC IRAC Source Catalog.
| . | star 1 . | star 2 . | star 3 . |
|---|---|---|---|
| SpT | WN3b+O6 V | B0 V | O8.5 V (?) |
| α (J2000) | |$04^{\rm h} 53^{\rm m} 03{^{s}_{.}}76$| | |$04^{\rm h} 53^{\rm m} 03{^{s}_{.}}60$| | |$04^{\rm h} 53^{\rm m} 03{^{s}_{.}}86$| |
| δ (J2000) | −69°23′51|${^{\prime\prime}_{.}}$|8 | −69°23′53|${^{\prime\prime}_{.}}$|8 | −69°23′50|${^{\prime\prime}_{.}}$|9 |
| U (mag) | 13.167 ± 0.041 | 14.502 ± 0.058 | – |
| B (mag) | 14.210 ± 0.035 | 15.255 ± 0.044 | – |
| V (mag) | 14.391 ± 0.099 | 15.298 ± 0.231 | – |
| I (mag) | 14.402 ± 0.102 | 15.441 ± 0.046 | – |
| J (mag) | 14.630 ± 0.010 | 15.550 ± 0.020 | 16.420 ± 0.040 |
| H (mag) | 14.530 ± 0.040 | 15.600 ± 0.020 | 15.920 ± 0.030 |
| Ks (mag) | 14.610 ± 0.040 | 15.620 ± 0.050 | 15.670 ± 0.070 |
| [3.6] (mag) | 14.053 ± 0.052 | 15.311 ± 0.086 | – |
| [4.5] (mag) | 14.120 ± 0.047 | 15.377 ± 0.077 | – |
| [5.8] (mag) | 13.764 ± 0.069 | – | – |
| [8.0] (mag) | 13.439 ± 0.100 | – | – |
| . | star 1 . | star 2 . | star 3 . |
|---|---|---|---|
| SpT | WN3b+O6 V | B0 V | O8.5 V (?) |
| α (J2000) | |$04^{\rm h} 53^{\rm m} 03{^{s}_{.}}76$| | |$04^{\rm h} 53^{\rm m} 03{^{s}_{.}}60$| | |$04^{\rm h} 53^{\rm m} 03{^{s}_{.}}86$| |
| δ (J2000) | −69°23′51|${^{\prime\prime}_{.}}$|8 | −69°23′53|${^{\prime\prime}_{.}}$|8 | −69°23′50|${^{\prime\prime}_{.}}$|9 |
| U (mag) | 13.167 ± 0.041 | 14.502 ± 0.058 | – |
| B (mag) | 14.210 ± 0.035 | 15.255 ± 0.044 | – |
| V (mag) | 14.391 ± 0.099 | 15.298 ± 0.231 | – |
| I (mag) | 14.402 ± 0.102 | 15.441 ± 0.046 | – |
| J (mag) | 14.630 ± 0.010 | 15.550 ± 0.020 | 16.420 ± 0.040 |
| H (mag) | 14.530 ± 0.040 | 15.600 ± 0.020 | 15.920 ± 0.030 |
| Ks (mag) | 14.610 ± 0.040 | 15.620 ± 0.050 | 15.670 ± 0.070 |
| [3.6] (mag) | 14.053 ± 0.052 | 15.311 ± 0.086 | – |
| [4.5] (mag) | 14.120 ± 0.047 | 15.377 ± 0.077 | – |
| [5.8] (mag) | 13.764 ± 0.069 | – | – |
| [8.0] (mag) | 13.439 ± 0.100 | – | – |
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