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Table 2
Spectral types of the classified stars.
| ID | RA(2000) | Dec(2000) | Spectral type | K S | J − KS | H − KS | A V | A K S | Distance | |
|
°′″ | [mag] | [mag] | [mag] | [mag] | [mag] | [kpc] | |||
|
|
||||||||||
| Early type | ||||||||||
| E1 | 17:50:24.03 | –28:53:07.8 | B0V – B2V | 10.36 | 0.73 | 0.21 | 4.2 ± 0.1 | 0.45 ± 0.01 | 1.3–2.4 | |
| E2 | 17:50:17.53 | –28:53:39.2 | B1V – B3V | 10.44 | 0.87 | 0.32 | 5.7 ± 0.1 | 0.62 ± 0.02 | 1.0–1.6 | |
| E3 | 17:50:16.94 | –28:53:40.4 | B1V – B3V | 9.75 | 0.93 | 0.26 | 4.7 ± 0.1 | 0.51 ± 0.01 | 0.7–1.2 | |
| E4 | 17:50:16.97 | –28:53:41.9 | B5V – B9V | 11.08 | 0.89 | 0.36 | 6.0 ± 0.1 | 0.65 ± 0.02 | 0.6–1.3 | |
| Young stellar objects | ||||||||||
| Y1 | 17:50:18.68 | –28:53:31.8 | red spectrum | 10.82 | 4.63 | 1.51 | – | – | – | |
| Y2 | 17:50:24.35 | –28:53:03.1 | Brγ, He i 2.059, 2.113 μm | 11.70 | 2.46 | 1.31 | – | – | ||
| (all in emission) | ||||||||||
| Y3 | 17:50:23.94 | –28:53:06.1 | featureless, Brγ emission | 13.49 | 1.67 | 0.96 | – | – | – | |
| Y4 | 17:50:15.41 | –28:54:11.9 | featureless, Brγ emission | 11.48 | 0.97 | 0.36 | – | – | – | |
| Asymptotic giant branch | ||||||||||
| AGB1 | 17:50:13.75 | –28:51:38.0 | M5 – M9 III | 8.86 | 5.35 | 1.80 | – | – | – | |
| Red giant branch | ||||||||||
| RG1 | 17:50:21.94 | –28:53:06.3 | K2 – K4 III | 9.73 | 4.56 | 1.49 | – | – | – | |
| RG2 | 17:50:21.90 | –28:52:58.5 | K2 – K4 III | 9.99 | 4.82 | 1.78 | – | – | – | |
| RG3 | 17:50:17.17 | –28:52:37.0 | K2 – K4 III | 9.98 | 4.73 | 1.55 | – | – | – | |
| RG4 | 17:50:22.48 | –28:53:18.0 | K5 – K8 III | 11.55 | 3.53 | 1.18 | – | – | – | |
Notes. For early type stars the inferred extinction and distances are indicated as well.
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