Table 2
Early-type star candidates.
| ID | RAa | Deca | RSgrA∗b | [1.71] − [2.25] c | [2.25] − [2.34] d | Namee | Typef | Counterpartg | |
| (J2000.0) | (J2000.0) | [′′] | |||||||
|
|
|||||||||
| 1 | 17:45:40.047 | –29:00:26.93 | 1.17 | 1.94 | 0.09 | IRS16NW | Ofpe/WN9 | Bu012(E1) | |
| 2 | 17:45:40.122 | –29:00:27.59 | 1.19 | 2.04 | 0.08 | IRS16C | Ofpe/WN9 | Bu007(E1), Do129 | |
| 3 | 17:45:40.124 | –29:00:29.09 | 1.48 | 2.21 | 0.13 | IRS16SW | Ofpe/WN9 | Bu015(N) | |
| 4 | 17:45:40.192 | –29:00:27.56 | 2.07 | 1.92 | 0.04 | IRS16CC | O9.5-B0.5I | Bu028(E1) | |
| 5 | 17:45:40.039 | –29:00:30.36 | 2.26 | 2.00 | 0.05 | IRS33N | B0.5-1I | Bu058(E1) | |
| 6 | 17:45:40.142 | –29:00:30.00 | 2.32 | 1.96 | 0.01 | E34/S2-17 | B0.5-1I | Bu027(E1) | |
| 7 | 17:45:40.094 | –29:00:31.26 | 3.24 | 2.02 | 0.16 | IRS33SE | Ofpe/WN9 | Bu019(E1) | |
| 8 | 17:45:40.165 | –29:00:31.05 | 3.38 | 2.14 | 0.15 | E47/S3-30 | B0-3I | Bu219(E1) | |
| 9 | 17:45:40.220 | –29:00:30.84 | 3.62 | 3.74 | 0.36 | IRS21 | DES | Bu219(E3) | |
| 10 | 17:45:39.864 | –29:00:24.33 | 4.42 | – | 0.45 | IRS3 | DES | Bu581(R) | |
| 11 | 17:45:39.649 | –29:00:27.33 | 5.19 | 3.42 | 0.26 | IRS6E | DES | Bu068(R) | |
| 12 | 17:45:40.455 | –29:00:25.13 | 6.20 | 1.95 | 0.17 | – | early(Ba) | Bu123(E1) | |
| 13 | 17:45:39.958 | –29:00:20.53 | 7.65 | 1.96 | 0.12 | E73 | O9-BI | Bu085(E1) | |
| 14 | 17:45:40.324 | –29:00:20.95 | 8.06 | 2.16 | 0.10 | – | – | Bu169(L2) | |
| 15 | 17:45:40.535 | –29:00:23.00 | 8.26 | 3.20 | 0.32 | IRS10W | DES,early(Ta) | – | |
| 16 | 17:45:40.343 | –29:00:35.44 | 8.35 | 2.29 | 0.15 | – | non-early(Ba) | Bu202(L2) | |
| 17 | 17:45:40.039 | –29:00:19.61 | 8.49 | 2.00 | 0.11 | E75 | O9-BI | Bu049(E1) | |
| 18 | 17:45:40.098 | –29:00:37.43 | 9.36 | 2.02 | 0.10 | – | non-early(Ba) | Bu079(E1) | |
| 19 | 17:45:39.324 | –29:00:28.63 | 9.41 | 2.93 | 0.13 | – | late(Bl) | Bl103, Bu183(L1) | |
| 20 | 17:45:39.546 | –29:00:35.01 | 9.47 | 1.93 | 0.16 | E79 | Ofpe/WN9 | Bu044(E1), Do117 | |
| 21 | 17:45:39.367 | –29:00:31.57 | 9.49 | 2.06 | 0.11 | – | early(Ba) | Bu157(E1) | |
| 22 | 17:45:39.922 | –29:00:18.14 | 10.08 | 1.78 | 0.24 | IRS15SW | WN8/WC9 | Bu124(E1), Do124 | |
| 23 | 17:45:40.047 | –29:00:17.92 | 10.18 | 1.78 | 0.07 | E84 | O9-BI | Bu051(E1) | |
| 24 | 17:45:39.363 | –29:00:33.85 | 10.58 | 1.97 | 0.10 | – | early(Ba) | Bu042(E1) | |
| 25 | 17:45:39.506 | –29:00:36.04 | 10.59 | 1.92 | 0.11 | – | – | Bu096(E1) | |
| 26 | 17:45:40.144 | –29:00:16.50 | 11.68 | 1.90 | 0.10 | IRS15NE | WN8/9 | Bu102(E1), Do123 | |
| 27 | 17:45:39.469 | –29:00:18.61 | 12.09 | 1.77 | 0.03 | – | non-early(Ba) | Bu133(L1) | |
| 28 | 17:45:39.375 | –29:00:37.21 | 12.61 | 2.16 | 0.07 | – | – | Bu172(L1) | |
| 29 | 17:45:40.696 | –29:00:18.36 | 13.00 | 3.74 | 0.32 | – | – | – | |
| 30 | 17:45:40.893 | –29:00:38.12 | 15.02 | 2.44 | 0.06 | – | – | Bu185(L1) | |
| 31 | 17:45:39.616 | –29:00:44.46 | 17.28 | 1.74 | -0.02 | – | – | – | |
| 32 | 17:45:40.867 | –29:00:41.73 | 17.42 | 3.82 | 0.04 | – | – | Bu480(R) | |
| 33 | 17:45:39.339 | –29:00:09.22 | 21.00 | 2.13 | 0.04 | – | – | – | |
| 34 | 17:45:39.475 | –29:00:08.12 | 21.31 | 2.32 | 0.13 | – | – | – | |
| 35 | 17:45:41.114 | –29:00:49.62 | 25.72 | 2.68 | 0.02 | – | – | – | |
| 36 | 17:45:42.052 | –29:00:20.02 | 27.60 | 2.72 | 0.01 | – | – | – | |
| 37 | 17:45:38.906 | –29:00:03.50 | 28.75 | 2.09 | 0.10 | – | – | – | |
| 38 | 17:45:39.603 | –29:00:58.80 | 31.23 | 1.96 | 0.08 | – | – | – | |
| 39 | 17:45:39.880 | –28:59:56.49 | 31.68 | 2.03 | 0.05 | – | – | – | |
| 40 | 17:45:39.416 | –29:00:58.78 | 31.75 | 3.05 | -0.03 | – | – | – | |
| 41 | 17:45:41.117 | –28:59:57.27 | 33.91 | 2.23 | 0.04 | – | – | – | |
| 42 | 17:45:38.668 | –28:59:57.79 | 35.25 | 1.92 | 0.13 | – | – | – | |
| 43 | 17:45:42.266 | –29:00:49.47 | 36.19 | 2.53 | 0.01 | – | – | – | |
| 44 | 17:45:37.524 | –29:00:46.02 | 37.56 | 3.84 | 0.01 | – | late(Bl) | Bl84 | |
| 45 | 17:45:37.436 | –29:00:08.73 | 39.27 | 2.14 | 0.10 | – | – | – | |
| 46 | 17:45:37.122 | –29:00:38.29 | 39.61 | 2.27 | 0.05 | – | – | – | |
| 47 | 17:45:36.878 | –29:00:33.15 | 41.79 | 2.15 | 0.03 | – | – | – | |
| 48 | 17:45:40.478 | –28:59:42.85 | 45.61 | 2.91 | 0.03 | – | – | – | |
| 49 | 17:45:41.686 | –29:01:08.96 | 46.21 | 2.59 | 0.08 | – | – | – | |
| 50 | 17:45:36.561 | –29:00:12.07 | 48.37 | 2.13 | 0.10 | – | – | – | |
| 51 | 17:45:37.616 | –28:59:47.42 | 51.63 | 2.49 | 0.00 | – | – | – | |
| 52 | 17:45:35.917 | –29:00:17.02 | 55.21 | 2.14 | 0.01 | – | – | – | |
| 53 | 17:45:39.082 | –28:59:33.00 | 56.52 | 1.07 | 0.03 | fg | – | – | |
| 54 | 17:45:43.872 | –29:00:01.32 | 56.96 | 2.27 | 0.05 | – | – | – | |
| 55 | 17:45:40.513 | –28:59:31.05 | 57.39 | 2.65 | 0.05 | – | – | – | |
| 56 | 17:45:35.623 | –29:00:11.96 | 60.15 | 2.32 | 0.08 | – | – | – | |
| 57 | 17:45:37.013 | –29:01:24.71 | 69.15 | 2.25 | 0.06 | – | – | – | |
| 58 | 17:45:38.583 | –29:01:36.43 | 70.95 | 2.20 | 0.08 | – | – | – | |
| 59 | 17:45:41.512 | –28:59:18.46 | 72.27 | 2.56 | –0.01 | – | – | – | |
| 60 | 17:45:41.819 | –28:59:18.38 | 73.52 | 2.29 | –0.00 | – | – | – | |
| 61 | 17:45:44.737 | –29:01:09.06 | 73.99 | 5.33 | 0.33 | – | – | – | |
| 62 | 17:45:43.062 | –28:59:24.95 | 74.56 | 2.52 | 0.01 | – | – | – | |
| 63 | 17:45:35.700 | –29:01:23.08 | 79.14 | 2.02 | 0.02 | – | – | – | |
Notes.
Typical positional uncertainty is 
(see Sect. 3.1).
Magnitude difference between [1.71] and [2.25] , after the color correction (Sect. 3.2).
Magnitude difference between [2.25] and [2.34] , after the color correction (Sect. 3.2) and the relative extinction correction (Sect. 3.4).
Name(s) of counterparts in Paumard et al. (2006) and Lu et al. (2009). The source # 53 is probably a foreground star, because of its very blue color in [1.71] − [2.25] .
Spectral type from Paumard et al. (2006), while the superscript “(Ba)” indicates the spectral type (early or non-early) from Bartko et al. (2010), “(Ta)” from Tanner et al. (2005), and “(Bl)” from Blum et al. (2003).
Counterparts from Blum et al. (2003, superscript “Bl”), Buchholz et al. (2009, superscript “Bu”) and Dong et al. (2011, superscript “Do”), and their source ID. E1, E3, L1, L2, N, and R denote quality 1 early-type candidates, quality 3 early-type candidates, quality 1 late-type candidates, quality 3 late-type candidates, sources with noisy SED, and strongly reddened sources, respectively, in Buchholz et al. (2009).
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