Table 1
Journal of X-shooter observations.
| Object | α (J2000) | δ (J2000) | V | K | Date | Exp. time [s] | |||
| M17- | CEN (OI) | (h m s) | (°′″) | mag | mag | UVB | VIS | NIR | |
|
|
|||||||||
| B111 | 2 (337) | 18:20:34.67 | –16:10:10.50 | 11.207a | 7.475 | 2013-07-17 | 2 × 60 | 2 × 90 | 2 × 10 |
| B163 | – | 18:20:30.95 | –16:10:39.40 | − | 9.686 | 2010-09-17 | 2 × 300 | 2 × 300 | 2 × 300 |
| B164 | 25 | 18:20:30.90 | –16:10.08.00 | 15.410b | 8.758 | 2013-07-17 | 2 × 470 | 2 × 500 | 2 × 30 |
| B215 (IRS15) | – | 18:20:28.70 | –16:12:12.00 | 16.100c | 10.004 | 2012-07-07 | 2 × 900 | 2 × 400 | 2 × 50 |
| B243 | 51 | 18:20:26.64 | –16:10:03.70 | 17.800b | 9.544 | 2012-07-06 | 2 × 900 | 2 × 870 | 2 × 50 |
| 2013-07-17 | 2 × 870 | 2 × 450 | 2 × 50 | ||||||
| B253 | 26 | 18:20:26.10 | –16:11:18.00 | 15.740b | 10.308 | 2013-07-17 | 2 × 470 | 2 × 500 | 2 × 30 |
| B268 | 49 | 18:20:25.35 | –16:10:19.20 | 17.100b | 9.494 | 2012-07-06 | 2 × 870 | 2 × 900 | 2 × 50 |
| 2012-07-06 | 2 × 870 | 2 × 300 | 2 × 50 | ||||||
| 2013-07-17 | 2 × 870 | 2 × 450 | 2 × 50 | ||||||
| B275 | 24 | 18:20:25.13 | –16:10:24.56 | 15.550b | 7.947 | 2009-08-11 | 4 × 685 | 8 × 285 | 12 × 11 |
| B289 | 31 | 18:20:24.39 | –16:08:43.46 | 15.550b | 9.178 | 2010-09-17 | 2 × 300 | 2 × 300 | 2 × 300 |
| 2012-07-06 | 2 × 870 | 2 × 300 | 2 × 50 | ||||||
| B311 | 16 (258) | 18:20:22.70 | –16:08:34.30 | 13.690b | 8.884 | 2013-07-17 | 2 × 270 | 2 × 300 | 2 × 30 |
| B331 | 92 | 18:20:21.71 | –16:11:18.40 | 20.100c | 8.946 | 2012-07-07 | 2 × 870 | 2 × 900 | 2 × 50 |
| B337 | 93 | 18:20:21.38 | –16:10:41.20 | − | 9.343 | 2013-07-16 | 2 × 870 | 2 × 450 | 2 × 50 |
| B358 | 34 | 18:20:21.36 | –16:09:59.60 | − | 7.788 | 2009-08-12 | 4 × 685 | 8 × 285 | 12 × 11 |
Notes. The first column lists the number of the object in the master’s thesis of Bumgardner (1992); the second column provides alternative IDs, the CEN (Chini et al. 1980), and OI (Ogura & Ishida 1976) numbers. The third and fourth columns list the right ascension α and declination δ (J2000). The fifth and sixth columns list the V- (see footnote for references) and K-band magnitude (2MASS; Cutri et al. 2003); the seventh column shows the date of the observations. The exposure times for each arm are shown in Cols. 8 to 10. B111, B163, B164, and B253 are associated with NGC 6618 (Povich et al. 2009).
AAVSO Photometric all sky survey (APASS) catalogue: https://www.aavso.org/apass;
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