2002A&A...395..499R


Query : 2002A&A...395..499R

2002A&A...395..499R - Astronomy and Astrophysics, volume 395, 499-513 (2002/11-4)

An XMM-Newton observation of the Lagoon Nebula and the very young open cluster NGC 6530.

RAUW G., NAZE Y., GOSSET E., STEVENS I.R., BLOMME R., CORCORAN M.F., PITTARD J.M. and RUNACRES M.C.

Abstract (from CDS):

We report the results of an XMM-Newton observation of the Lagoon Nebula (M8). Our EPIC images of this region reveal a cluster of point sources, most of which have optical counterparts inside the very young open cluster NGC 6530. The bulk of these X-ray sources are probably associated with low and intermediate mass pre-main sequence stars. One of the sources experienced a flare-like increase of its X-ray flux making it the second brightest source in M8 after the O4 star 9 Sgr. The X-ray spectra of most of the brightest sources can be fitted with thermal plasma models with temperatures of kT ∼ a few keV. Only a few of the X-ray selected PMS candidates are known to display Hα emission and were previously classified as classical TTauri stars. This suggests that most of the X-ray emitting PMS stars in NGC 6530 are weak-line TTauri stars. In addition to 9 Sgr, our EPIC field of view contains also a few early-type stars. The X-ray emission from HD 164816 is found to be typical for an O9.5III-IV star. At least one of the known Herbig Be stars in NGC 6530 (LkHα115) exhibits a relatively strong X-ray emission, while most of the main sequence stars of spectral type B1 and later are not detected. We also detect (probably) diffuse X-ray emission from the Hourglass Region that might reveal a hot bubble blown by the stellar wind of Herschel 36, the ionizing star of the Hourglass Region.

Abstract Copyright:

Journal keyword(s): ISM: individual objects: M 8 - open clusters and associations: individual: NGC 6530 - stars: early-type - stars: pre-main sequence - X-rays: stars

VizieR on-line data: <Available at CDS (J/A+A/395/499): table1.dat table2.dat table3.dat>

Nomenclature: Tables 1, 2, 3: [RNG2002] NNN (Nos 1-117).

Simbad objects: 173

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Number of rows : 173
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2023
#notes
1 * tet01 Ori C SB* 05 35 16.4662967280 -05 23 22.921811880 4.20 5.15 5.13 4.91 4.73 O7Vp 1368 1
2 NAME Mon R2 HII 06 07 47.58 -06 22 42.6           ~ 712 2
3 NGC 3603 OpC 11 15 11 -61 15.5           ~ 1032 1
4 X Sgr X-3 LXB 18 01 32.3 -20 31 44           ~ 229 1
5 V* V5098 Sgr Or* 18 02 50.8918954776 -24 16 17.182487568   13.80 13.12 13.28   ~ 8 0
6 * 7 Sgr * 18 02 51.0986253456 -24 16 56.882232732   5.86 5.34     F2II-III 70 0
7 XMMU J180252.9-241525 X 18 02 52.79 -24 15 24.0           ~ 1 0
8 XMMU J180253.3-241955 X 18 02 53.3 -24 19 55           ~ 1 0
9 EM* LkHA 104 Or* 18 02 54.2860628856 -24 20 56.637213288     15.80     ~ 10 0
10 XMMU J180257.3-242014 X 18 02 57.3 -24 20 14           ~ 1 0
11 NGC 6523 Cl* 18 03.2 -24 23           ~ 185 1
12 2MASS J18032258-2422046 Y*O 18 03 22.5892512144 -24 22 04.847360232   11.58 10.62   9.55 ~ 10 0
13 Cl* NGC 6530 SCB 20 * 18 03 23.7079528761 -24 15 25.787652834   16.45 15.17   13.64 ~ 3 0
14 2MASS J18032414-2415539 Y*O 18 03 24.1786669824 -24 15 53.961372972   16.766 15.513   13.996 ~ 4 0
15 NGC 6530 241 * 18 03 26.7199475952 -24 12 45.655030476   12.10 11.86   11.38 ~ 9 0
16 M 8 HII 18 03 37 -24 23.2           ~ 598 1
17 XMMU J180337.5-242116 X 18 03 37.5 -24 21 16           ~ 1 0
18 Cl* NGC 6530 SCB 1028 * 18 03 37.9 -24 22 38     20.957     ~ 2 0
19 Cl* NGC 6530 SCB 1039 Y*O 18 03 38.0309278296 -24 22 34.139125092     18.897     ~ 3 0
20 XMMU J180338.1-242235 X 18 03 38.1 -24 22 35           ~ 1 0
21 XMMU J180339.1-243302 X 18 03 39.1 -24 33 02           ~ 1 0
22 NGC 6530 255 * 18 03 39.8636931339 -24 19 25.006676754   16.211 15.022   13.572 ~ 5 0
23 Cl* NGC 6530 SCB 1032 Y*O 18 03 40.2147541128 -24 22 03.615676392   19.012 18.066   15.341 G5-G9V 7 0
24 EM* LkHA 106 Or* 18 03 40.2714614592 -24 23 20.116598856   15.418 14.202 14.28 12.664 K0-K0.5I-II 7 0
25 XMMU J180340.3-242316 X 18 03 40.3 -24 23 16           ~ 1 0
26 NAME Her 36SE SB* 18 03 40.3201232304 -24 22 42.857540472 10.26 11.022 10.372 10.267   O8V+ 188 0
27 GAL 005.97-01.17 HII 18 03 40.501 -24 22 44.46           ~ 33 0
28 Cl* NGC 6530 SCB 146 * 18 03 40.7077895064 -24 23 16.299314484   17.712 16.239   14.116 ~ 6 0
29 NAME Hourglass Nebula ISM 18 03 41.1 -24 22 37           ~ 75 2
30 Cl* NGC 6530 SCB 151 * 18 03 41.4251092488 -24 12 20.948317848   16.627 15.321   13.685 ~ 6 0
31 Cl* NGC 6530 SCB 157 Y*O 18 03 41.7807292800 -24 24 19.779773004   16.948 15.446 14.939 13.453 K1-K2IV 7 0
32 Cl* NGC 6530 SCB 174 Y*O 18 03 43.6339649086 -24 23 39.714543050   18.121 16.690   14.780 ~ 8 0
33 CD-24 13810 Y*O 18 03 45.0958464864 -24 22 05.325003732 9.67 10.180 10.054 10.169 9.54 B2-B4V 27 0
34 HD 315027 * 18 03 46.8797386248 -24 16 45.976453680   10.949 10.805   10.538 F0 14 0
35 Cl* NGC 6530 SCB 202 Em* 18 03 46.9925606904 -24 22 04.510186464   17.890 16.534   14.392 ~ 7 0
36 2MASS J18034894-2415409 Y*O 18 03 48.9396385944 -24 15 41.023013508   18.167 16.886   15.265 ~ 6 0
37 V* V1761 Sgr Or* 18 03 49.3526715072 -24 23 37.637733048 19.725 18.059 16.762 15.88 15.111 K2-K3V 10 0
38 Cl* NGC 6530 SCB 228 Y*O 18 03 50.0617053216 -24 21 07.944545376 17.295 15.735 14.618   13.294 G5-G9III 7 0
39 XMMU J180350.5-242110 X 18 03 50.5 -24 21 10           ~ 1 0
40 Cl* NGC 6530 SCB 238 Em* 18 03 50.7059573664 -24 20 13.071326784 19.090 17.893 16.551   14.615 ~ 10 0
41 EM* LkHA 108 Em* 18 03 50.7590261472 -24 21 10.836157104 12.541 12.137 11.714   11.003 ~ 20 0
42 XMMU J180351.3-241149 X 18 03 51.3 -24 11 49           ~ 1 0
43 NGC 6530 287 Y*O 18 03 52.2043183896 -24 22 59.272642272 16.225 14.945 13.755   12.275 G9-K1III-IV 9 0
44 * 9 Sgr Em* 18 03 52.4450051016 -24 21 38.632254012 5.08 5.97 5.97 5.72 5.70 O4V((f))z 531 0
45 2MASS J18035526-2417000 Y*O 18 03 55.2620046264 -24 17 00.001304448   15.733 14.700   13.429 K4-K5V 12 0
46 XMMU J180356.4-242340 X 18 03 56.4 -24 23 40           ~ 2 0
47 XMMU J180356.5-242018 X 18 03 56.55 -24 20 16.5           ~ 1 0
48 HD 164816 Be* 18 03 56.8425865728 -24 18 45.118050552 6.17 7.006 6.986 8.08 6.989 O9.5V+B0V 147 0
49 CXOU J180357.0-242054 Y*O 18 03 57.055 -24 20 54.78           ~ 2 0
50 2MASS J18035730-2416099 Y*O 18 03 57.3010349232 -24 16 09.985382616   17.468 16.317   14.871 K7-M0V 10 0
51 Cl* NGC 6530 SCB 295 Y*O 18 03 58.5290878920 -24 24 58.623793524 18.496 16.867 15.444   13.579 M0-M1.5V 11 0
52 XMMU J180358.6-242530 X 18 03 58.6 -24 25 30           ~ 1 0
53 2MASS J18040008-2419119 Y*O 18 04 00.0735508344 -24 19 11.965376136 17.604 16.464 15.351   13.961 ~ 9 0
54 XMMU J180402.6-242645 X 18 04 02.6 -24 26 45           ~ 1 0
55 Cl* NGC 6530 SCB 340 Y*O 18 04 02.8729618704 -24 21 40.028705460   16.009 14.736   13.150 K8-M1.5V 9 0
56 XMMU J180404.5-241941 X 18 04 04.5 -24 19 41           ~ 1 0
57 XMMU J180405.0-242511 X 18 04 05.0 -24 25 11           ~ 1 0
58 2MASS J18040510-2416421 Y*O 18 04 05.1033197784 -24 16 42.129789852 19.570 17.659 16.276   14.539 M0.5-M1V 12 0
59 XMMU J180405.2-242340 X 18 04 05.2 -24 23 40           ~ 1 0
60 HD 315025 Y*O 18 04 07.3430494776 -24 19 26.192892864 11.210 11.001 10.756 10.84 10.279 B8 23 0
61 Cl* NGC 6530 SCB 380 Y*O 18 04 07.3651587624 -24 22 21.920977200 17.366 15.886 14.588   12.935 K1-K3V 12 0
62 XMMU J180407.4-242226 X 18 04 07.4 -24 22 26           ~ 1 0
63 2MASS J18040751-2422280 Y*O 18 04 07.5077472648 -24 22 28.446146616 15.182 14.207 13.282   12.127 ~ 10 0
64 XMMU J180407.7-242311 X 18 04 07.7 -24 23 11           ~ 1 0
65 2MASS J18040781-2421263 Y*O 18 04 07.7960435880 -24 21 26.550307764 19.307 17.559 16.311   14.647 ~ 9 0
66 Cl* NGC 6530 SCB 388 Em* 18 04 07.8070376688 -24 23 11.420458188   18.067 16.647   14.847 ~ 6 0
67 Cl* NGC 6530 SCB 390 Em* 18 04 07.8302285952 -24 23 12.671157444   17.278 15.990   14.365 ~ 9 0
68 XMMU J180409.3-242017 X 18 04 09.3 -24 20 17           ~ 1 0
69 XMMU J180409.3-241622 X 18 04 09.3 -24 16 22           ~ 1 0
70 Cl* NGC 6530 SCB 410 Y*O 18 04 09.60888 -24 27 10.8792 19.243 18.236 16.737   14.796 K4-K5V 9 0
71 CPD-24 6152 Y*O 18 04 11.1598510296 -24 21 45.175823136   10.497 10.374   10.140 B2V 23 0
72 NGC 6530 29 Or* 18 04 11.2114383960 -24 24 47.756631276 13.76 14.12 13.25 12.92 11.83 F? 12 0
73 NGC 6530 31 Y*O 18 04 11.5832911608 -24 25 29.948671200 12.363 11.967 11.706   11.229 A0 18 0
74 XMMU J180412.2-241907 X 18 04 12.2 -24 19 07           ~ 1 0
75 2MASS J18041248-2419430 Y*O 18 04 12.4838561544 -24 19 43.023828360 18.606 17.081 15.773   14.076 K0-K2V 10 0
76 2MASS J18041315-2418251 Y*O 18 04 13.1556403512 -24 18 25.035803532   15.217 14.253   13.046 ~ 10 0
77 XMMU J180413.2-241517 X 18 04 13.2 -24 15 17           ~ 1 0
78 2MASS J18041336-2424512 Y*O 18 04 13.3703153904 -24 24 51.074255340 18.020 16.686 15.394   13.684 K2-K3V 8 0
79 2MASS J18041377-2424051 Y*O 18 04 13.7786460504 -24 24 05.066721612 18.644 16.956 15.622   13.898 ~ 11 0
80 XMMU J180413.9-241722 X 18 04 13.9 -24 17 22           ~ 1 0
81 Cl* NGC 6530 SCB 457 Y*O 18 04 13.9239807744 -24 26 23.492111820 19.659 17.936 16.422   14.320 K3-K5V 10 0
82 2MASS J18041403-2423390 Y*O 18 04 14.0457982248 -24 23 38.710883004 16.553 15.481 14.459   13.161 ~ 8 0
83 NGC 6530 39 Y*O 18 04 14.4574598520 -24 19 36.816916764 16.934 15.521 14.346   12.858 G7-K1III-IV 11 0
84 HD 315026 ** 18 04 14.5189421200 -24 14 36.851688090 8.48 9.34 9.21 9.76   B0V 28 0
85 2MASS J18041457-2422211 Y*O 18 04 14.5349778323 -24 22 20.960178053   17.524 16.166   14.419 ~ 7 0
86 2MASS J18041461-2421554 Y*O 18 04 14.6300071560 -24 21 55.543031028 16.007 14.531 13.353   11.878 ~ 11 0
87 XMMU J180414.7-242224 X 18 04 14.7 -24 22 24           ~ 1 0
88 2MASS J18041519-2419071 Y*O 18 04 15.1988919504 -24 19 07.025902356 19.326 17.990 16.762   15.180 ~ 9 0
89 HD 164865 s*b 18 04 15.2161048560 -24 11 00.078860400 8.62 8.470 7.630 6.74 5.910 B9Ia 64 0
90 XMMU J180415.3-241902 X 18 04 15.3 -24 19 02           ~ 1 0
91 2MASS J18041562-2421133 Y*O 18 04 15.6233782608 -24 21 13.143213180 20.606 18.467 16.956   14.954 ~ 9 0
92 NGC 6530 47 Y*O 18 04 15.7321154184 -24 14 55.385013048 13.179 12.545 12.277   11.854 ~ 15 0
93 V* V1775 Sgr Or* 18 04 15.7361475192 -24 19 01.658022204 18.500 16.829 15.505   13.829 ~ 11 0
94 2MASS J18041678-2428371 Y*O 18 04 16.7820489432 -24 28 37.091010468 12.277 11.803 11.580   11.102 A0 17 0
95 Cl* NGC 6530 SCB 504 Y*O 18 04 16.9120780848 -24 24 14.613609420 16.772 15.604 14.402   12.839 ~ 11 0
96 XMMU J180419.6-242603 X 18 04 19.6 -24 26 03           ~ 1 0
97 Cl* NGC 6530 SCB 540 Em* 18 04 20.0361664296 -24 22 48.087149916 18.864 17.389 16.143   14.354 ~ 12 0
98 XMMU J180420.3-241920 X 18 04 20.3 -24 19 20           ~ 1 0
99 2MASS J18042035-2422005 Y*O 18 04 20.3610723192 -24 22 00.431653368 18.475 16.771 15.470   13.849 ~ 7 0
100 XMMU J180420.4-242810 X 18 04 20.4 -24 28 10           ~ 1 0
101 Cl* NGC 6530 SCB 556 Em* 18 04 21.0898811069 -24 23 25.244731740 19.792 18.419 16.923   14.734 G8III-K3V 14 0
102 2MASS J18042111-2419533 Y*O 18 04 21.1115174592 -24 19 53.258925036 17.033 15.757 14.669   13.214 ~ 8 0
103 CD-24 13829 ** 18 04 21.2734315416 -24 21 18.110381292 8.47 9.476 9.453 9.651   B1.5Vne 44 0
104 XMMU J180421.8-242114 X 18 04 21.8 -24 21 14           ~ 1 0
105 Cl* NGC 6530 SCB 571 Y*O 18 04 21.8822728176 -24 20 33.190255608 15.676 14.754 13.926   12.810 G3-G7V 8 0
106 2MASS J18042209-2421174 Y*O 18 04 22.0992466584 -24 21 17.361453420   16.906 17.818   15.830 ~ 7 0
107 2MASS J18042264-2421110 Y*O 18 04 22.6505680056 -24 21 10.915820064 20.425 18.539 16.955   14.816 ~ 12 0
108 CD-24 13830 Ae* 18 04 22.7421765936 -24 22 09.724518840 9.41 10.183 10.016 10.11 9.624 B2Ve 44 0
109 2MASS J18042282-2423564 Y*O 18 04 22.8272317056 -24 23 56.363405568 20.060 18.137 16.731   14.908 ~ 9 0
110 CXOU J180422.9-242115 Y*O 18 04 22.951 -24 21 15.96           ~ 3 0
111 HD 315033 * 18 04 23.2279355376 -24 26 16.720588140 8.42 9.02 8.90     B1V 46 0
112 Cl* NGC 6530 SCB 592 * 18 04 23.5303642320 -24 29 55.227274224   18.102 16.678   14.874 ~ 5 0
113 NGC 6530 316 Y*O 18 04 23.5522010832 -24 21 16.749829332   13.742 12.660   11.309 G8-K0IV-V 11 0
114 CPD-24 6164 * 18 04 23.9941418688 -24 21 26.706008844 9.13 9.890 9.740 9.98   B1Ve 35 0
115 NGC 6530 62 Y*O 18 04 24.2413617072 -24 18 31.223700792 16.266 15.192 14.141   12.792 G4-G6IV-V 11 0
116 2MASS J18042466-2420263 Y*O 18 04 24.6628570152 -24 20 26.268484992 19.627 17.998 16.554   14.668 ~ 10 0
117 XMMU J180424.7-242454 X 18 04 24.7 -24 24 54           ~ 1 0
118 2MASS J18042501-2427453 Y*O 18 04 25.0200119664 -24 27 45.250495812   11.712 11.468   10.991 B5 11 0
119 2MASS J18042526-2422509 Y*O 18 04 25.2729364968 -24 22 50.930758272 19.849 17.880 16.417   14.501 ~ 9 0
120 2MASS J18042558-2417501 Y*O 18 04 25.5890702616 -24 17 50.032419000 18.055 16.563 15.374   13.837 ~ 7 0
121 2MASS J18042625-2424018 Y*O 18 04 26.2517884944 -24 24 01.732325544 19.472 18.837 17.297   15.176 ~ 10 0
122 2MASS J18042665-2421066 Y*O 18 04 26.6524492704 -24 21 06.450437700 20.323 18.488 16.953   14.828 ~ 8 0
123 XMMU J180426.9-242100 X 18 04 26.9 -24 21 00           ~ 1 0
124 V* V1787 Sgr Or* 18 04 27.0690604632 -24 21 06.483227976 20.480 17.793 16.333   14.509 ~ 11 0
125 Cl* NGC 6530 SCB 641 Y*O 18 04 27.4062713952 -24 23 56.261813136 15.824 14.845 13.799   12.435 G3-G7III 12 0
126 HD 315031 SB* 18 04 28.0254107904 -24 21 42.788444328 7.68 9.170 9.090 9.16   B0.5IV/V+B1V 53 0
127 2MASS J18042860-2418567 Y*O 18 04 28.6071244896 -24 18 56.706612156   15.170 14.186   12.968 ~ 12 0
128 2MASS J18042880-2414452 Y*O 18 04 28.8103486152 -24 14 45.208673592 18.170 16.789 15.573   13.992 ~ 9 0
129 2MASS J18042886-2414025 Y*O 18 04 28.8668442576 -24 14 02.534069328 13.501 12.478 12.009   11.308 ~ 15 0
130 Cl* NGC 6530 SCB 657 * 18 04 28.88 -24 21 42.1   15.237 14.125   12.822 ~ 3 0
131 2MASS J18042889-2422184 Y*O 18 04 28.8969779424 -24 22 18.309429948 17.812 16.321 15.102   13.528 ~ 9 0
132 Cl* NGC 6530 SCB 659 * 18 04 28.94 -24 22 57.3   17.121 16.012   14.393 ~ 3 0
133 XMMU J180429.1-242147 X 18 04 29.1 -24 21 47           ~ 1 0
134 2MASS J18042914-2421526 Y*O 18 04 29.1394788600 -24 21 52.704662976 17.082 16.061 14.943   13.479 ~ 8 0
135 2MASS J18042916-2420263 Y*O 18 04 29.1712514784 -24 20 26.208527280 20.463 18.726 17.132   14.935 ~ 9 0
136 HD 315024 * 18 04 29.2696805472 -24 19 25.110290784 8.9 9.77 9.68 9.92   B0IV 35 0
137 V* V1791 Sgr Or* 18 04 29.4462961464 -24 23 04.207513380 18.810 17.338 15.899   13.940 G7-K1III 12 0
138 XMMU J180429.5-242300 X 18 04 29.5 -24 23 00           ~ 1 0
139 XMMU J180430.5-242850 X 18 04 30.5 -24 28 50           ~ 2 0
140 Cl* NGC 6530 ZW 70A Y*O 18 04 30.8543674368 -24 26 34.629074412 17.09 17.093 15.645   13.807 ~ 9 0
141 Cl* NGC 6530 ZW 70 EB? 18 04 30.876000 -24 26 34.23732   16.04 14.73 14.14   ~ 2 0
142 Cl* NGC 6530 ZW 70B Y*O 18 04 30.9095480112 -24 26 33.451136988   16.379 15.551   13.822 ~ 11 0
143 NGC 6530 OpC 18 04 31 -24 21.5           ~ 400 0
144 2MASS J18043220-2421280 Y*O 18 04 32.2063362264 -24 21 28.102480236 19.125 17.639 16.250   14.368 ~ 9 0
145 NGC 6530 79 Y*O 18 04 32.2613541048 -24 24 10.242708840 16.895 15.791 14.639   13.133 G7-G8V 14 0
146 2MASS J18043292-2418445 Y*O 18 04 32.9189018640 -24 18 44.497260936 10 10.61 10.454 10.61 10.245 B2.5Vne 31 0
147 CD-24 13837 * 18 04 32.9906237448 -24 23 12.478728588 8.74 9.630 9.610 9.82   B1V 36 0
148 Cl* NGC 6530 SCB 718 Y*O 18 04 33.6874050480 -24 27 09.734566032 17.135 15.852 14.592   13.008 ~ 8 0
149 XMMU J180434.2-242154 X 18 04 34.2 -24 21 54           ~ 1 0
150 V* V5563 Sgr EB* 18 04 34.2049522080 -24 22 00.550706448 9.38 9.93 9.8     B2V 34 0
151 2MASS J18043439-2421510 Y*O 18 04 34.380 -24 21 50.66   19.574 18.357   16.156 ~ 5 0
152 NGC 6530 87 Y*O 18 04 34.4591643384 -24 19 26.188916592 14.677 13.759 12.898   11.839 F8III-G1V 12 0
153 XMMU J180435.0-242334 X 18 04 35.0 -24 23 34           ~ 1 0
154 2MASS J18043533-2427303 Y*O 18 04 35.3336845632 -24 27 30.263583492 19.514 18.220 16.647   14.556 M0-M0.5V 11 0
155 HD 315021 Y*O 18 04 35.9943009216 -24 19 52.030225308 8.892 8.553 8.509 9.41 8.397 B0V 59 0
156 XMMU J180436.0-241959 X 18 04 36.0 -24 19 59           ~ 1 0
157 Cl* NGC 6530 SCB 740 Y*O 18 04 36.1344131256 -24 20 00.878863632 14.663 13.792 13.161   12.273 F8-F9IV 8 0
158 2MASS J18043707-2429587 Y*O 18 04 37.0733194896 -24 29 58.657051824   16.511 15.157   13.339 ~ 5 0
159 Cl* NGC 6530 SCB 761 Y*O 18 04 38.1881465496 -24 20 46.627090440 18.461 16.811 15.448   13.666 M0.5-M1.5V 9 0
160 2MASS J18043892-2424144 Y*O 18 04 38.9260319088 -24 24 14.207664960   11.410 10.205   8.938 K0III 16 0
161 NGC 6530 97 Y*O 18 04 38.9657145072 -24 19 25.642621380   11.553 11.408   11.071 B9 17 0
162 XMMU J180439.0-241924 X 18 04 39.0 -24 19 24           ~ 1 0
163 Cl* NGC 6530 SCB 773 * 18 04 39.51 -24 19 25.9   16.610 15.753   14.728 ~ 3 0
164 2MASS J18044045-2426416 Y*O 18 04 40.4369224968 -24 26 41.798859756 21.099 19.228 17.594   15.430 ~ 9 0
165 2MASS J18044145-2418547 Y*O 18 04 41.4422341944 -24 18 54.881533512 17.014 15.686 14.665   13.392 G4-G6V 13 0
166 HD 164947B * 18 04 41.6429686896 -24 20 55.314053916   9.852 9.801 10.07 9.599 B2V+ 11 0
167 XMMU J180441.9-242248 X 18 04 41.9 -24 22 48           ~ 1 0
168 XMMU J180441.9-242128 X 18 04 41.9 -24 21 28           ~ 1 0
169 V* V1803 Sgr Or* 18 04 48.508608 -24 26 40.40016   18.437 17.102 16.36 14.946 ~ 6 0
170 2MASS J18044863-2426354 Y*O 18 04 48.6125951496 -24 26 35.476208772 16.198 14.909 13.655   12.012 B2.5 12 0
171 XMMU J180448.7-242634 X 18 04 48.7 -24 26 34           ~ 1 0
172 EM* LkHA 115 Ae* 18 04 50.5999226472 -24 25 42.095461620   12.380 11.949   11.198 B7e 28 0
173 HD 165052 SB* 18 05 10.5506592816 -24 23 54.847798080 6.16 6.98 6.87 7.77   O5.5:Vz+O8:V 259 1

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2023.02.01-21:01:33

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