1997A&A...325..167R

Query : 1997A&A...325..167R

1997A&A...325..167R - Astronomy and Astrophysics, volume 325, 167-177 (1997/9-1)

Geneva photometry in the young open cluster NGC 6231.

RABOUD D., CRAMER N. and BERNASCONI P.A.

Abstract (from CDS):

We present photoelectric (127 stars) and CCD (168 stars) Geneva photometry for the very young open cluster NGC 6231. We have searched for new cluster members out to a distance of ∼13['arc], extending the Seggewiss area (∼8['arc]), and we found at least 64 new probable members in this extended field. Differential reddening is clearly measured across the cluster area. We determine the cluster distance (1800 pc) and age (3.8±0.6x106yr). The probable presence of PMS stars and the consequence of this population on the cluster formation history is analysed. We also found that the O8.5III star S161 is a long term variable and we present its light curve extending over more than 20 years. Finally we discuss the existence of Ap stars in the cluster.

Abstract Copyright: ∼

Journal keyword(s): open clusters: individual: NGC 6231 - technique: photometry - stars: formation - stars: pre-main sequence

VizieR on-line data: <Available at CDS (J/A+A/325/167): table3 table4 table5>

Nomenclature: Tables 3, 4, 5: NGC 6231 NNN Nos among (Nos 302-381, 501-817) added.

Simbad objects: 244

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Number of rows : 244
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024 		#notes
1 NGC 457 OpC 01 19 32.9 +58 16 41   6.97 6.4     ~ 244 2
2 M 103 OpC 01 33 21.4 +60 39 32   7.72 7.4     ~ 201 0
3 NGC 869 OpC 02 18 57.8 +57 08 02           ~ 476 0
4 NGC 884 OpC 02 22 20.2 +57 08 56           ~ 486 0
5 NGC 1039 OpC 02 42 07.4 +42 43 19           ~ 430 0
6 Cl Melotte 20 OpC 03 26 28.1 +48 58 30           ~ 861 0
7 Cl Melotte 22 OpC 03 46 24.2 +24 06 50           ~ 3432 0
8 NAME Orion Nebula Cluster OpC 05 35.0 -05 29           ~ 2329 0
9 NGC 2264 OpC 06 40 52.1 +09 52 37           ~ 1792 0
10 M 41 OpC 06 45 59.8 -20 42 58   4.89 4.5     ~ 283 0
11 NGC 2516 OpC 07 58 06.5 -60 48 00           ~ 713 0
12 NGC 2682 OpC 08 51 23.0 +11 48 50           ~ 2341 0
13 NGC 3532 OpC 11 05 40.1 -58 42 25           ~ 350 0
14 NGC 4755 OpC 12 53 39.6 -60 22 16           ~ 289 0
15 NGC 5460 OpC 14 07 23.3 -48 17 06   5.85 5.6     ~ 99 0
16 NGC 6025 OpC 16 03 07.0 -60 25 48           ~ 104 0
17 HD 151515 SB* 16 49 48.2512632192 -42 00 06.177451752 6.77 7.48 7.30 7.11 6.88 O7II(f) 124 0
18 V* V1290 Sco EB* 16 50 01.4443831536 -41 37 16.491545688 7.37 8.10 7.98 8.86   B0III 79 1
19 HD 326176 * 16 50 44.3891687712 -41 44 49.753451472 9.45 9.91 9.18 9.55   B0 42 0
20 HD 151804 s*b 16 51 33.7218052272 -41 13 49.919519496 4.45 5.29 5.22     O8Iaf 376 0
21 HD 151932 WR* 16 52 19.2477039480 -41 51 16.270066224 6.06 6.79 6.51 7.64   WN7h 313 0
22 HD 152003 s*b 16 52 47.3744351712 -41 47 08.990966004 6.90 7.47 7.08 6.72 6.35 O9.7IabNwk 120 1
23 HD 152042 Y*O 16 52 57.4422587616 -41 33 54.564423480 7.59 8.33 8.28     B1Ib/II 48 0
24 CD-41 10989 Y*O 16 53 06.0620888688 -41 53 18.640540572 11.12 11.55 11.08     B0:IV/V 13 0
25 HD 152076 Y*O 16 53 07.3002035928 -41 43 45.479256528 7.98 9.10 8.90 9.36   B0III 54 0
26 NGC 6231 723 SB* 16 53 07.3957269240 -41 53 31.238667924 11.643 11.896 11.435   10.736 B3:V 8 0
27 CD-41 10990 Y*? 16 53 08.1765406224 -41 47 12.008007996 10.76 11.19 10.852   10.326 B1V 12 0
28 HD 326306 * 16 53 16.0420238064 -41 29 24.097817940 9.24 9.89 10.0     B0 23 0
29 HD 326343 Y*O 16 53 19.3987800696 -41 54 30.009450816 10.526 10.954 10.579   9.994 B3 24 0
30 NGC 6231 734 Y*O 16 53 26.0679060648 -41 42 34.754623056 14.160 13.982 13.548 13.2 12.902 B9V 9 0
31 HD 152147 SB* 16 53 28.6179497064 -42 07 17.050155420 7.20 7.76 7.34 6.97 6.60 O9.7IbNwk 109 0
32 NAME Sco OB 1 As* 16 53.5 -41 57           ~ 217 0
33 NGC 6231 739 * 16 53 36 -41 40.0   13.19 13.17     ~ 2 0
34 HD 326327 Be* 16 53 39.0780958656 -41 47 48.021660096 9.372 9.969 9.729 10.03 9.312 B1.5Ve 53 0
35 NGC 6231 296 Y*O 16 53 40.0090677528 -41 48 12.533788188 11.376 11.752 11.467   11.009 ~ 8 0
36 HD 152182 Y*? 16 53 41.4737243208 -41 19 40.121593320 8.48 10.18 9.96     B1II 37 0
37 NGC 6231 30 Y*? 16 53 41.9639057592 -41 48 20.835380016 11.727 11.94 11.625 11.71 11.149 ~ 14 0
38 NGC 6231 41 Y*O 16 53 44.0300553960 -41 50 36.790108080 12.498 12.704 12.423   11.951 ~ 13 0
39 HD 326328 SB* 16 53 45.5874473424 -41 49 09.633232164 9.792 10.382 10.213   9.857 B3 39 0
40 NGC 6231 33 Y*? 16 53 46.9871839944 -41 48 54.948359880 12.400 12.621 12.375 12.60 11.962 B6-8V 12 0
41 NGC 6231 54 Y*O 16 53 47.9802961776 -41 55 04.377359136 12.883 12.991 12.650   12.126 ~ 7 0
42 NGC 6231 14 Y*? 16 53 48.4712973240 -41 45 21.816629028 11.711 12.020 11.751   11.298 ~ 12 0
43 CD-41 11013 Y*O 16 53 49.2229362192 -41 37 51.878869896   12.21 11.92 12.12   ~ 7 0
44 NGC 6231 300 Y*? 16 53 50.1564111120 -41 50 09.368957544 17.339 16.802 15.657   14.190 ~ 6 0
45 NGC 6231 15 * 16 53 51.1359266856 -41 45 43.518164976 14.550 14.118 13.603   12.912 ~ 7 0
46 2MASS J16535119-4150538 Y*? 16 53 51.1986460008 -41 50 53.780192484 12.810 12.893 12.616   12.167 ~ 14 0
47 HD 152199 Y*O 16 53 51.3544154184 -41 32 41.259571044 8.15 9.17 9.02 9.40   O9.7V 39 0
48 HD 152200 SB* 16 53 51.6564464880 -41 50 32.716447224 7.744 8.488 8.391 9.31 8.152 O9.7IV(n) 68 0
49 NGC 6231 281 Y*? 16 53 52.0599810384 -41 48 54.086756796 11.886 12.230 12.034 12.20 11.619 Ap 13 0
50 HD 152217 Y*? 16 53 53.6877114288 -41 15 18.250866036 7.91 8.61 8.45 9.33   B2II 54 0
51 V* V945 Sco bC* 16 53 54.5203569984 -41 52 14.960561412 9.090 9.745 9.575 9.618 9.260 B1V 43 0
52 HD 152219 EB* 16 53 55.6078109256 -41 52 51.496403268 6.950 7.705 7.569   7.267 O9.5III(n) 107 0
53 NGC 6231 24 Be* 16 53 56.1157621704 -41 46 37.868545596 11.643 11.959 11.718   11.349 B_ 15 0
54 NGC 6231 283 Y*O 16 53 56.1857491848 -41 48 15.778884168 11.847 12.129 11.880   11.523 B3V 14 0
55 V* V1293 Sco SB* 16 53 57.5918059848 -41 38 41.669125044 9.39 10.3 10.2     B1.5:V 22 0
56 NGC 6231 255 SB* 16 53 57.7886640144 -41 52 46.974573336 12.999 13.159 12.842   12.382 ~ 13 0
57 NGC 6231 278 Y*O 16 53 57.8974156680 -41 50 04.476614208 12.509 12.547 12.247   11.801 ~ 12 0
58 V* V1032 Sco bC* 16 53 58.6055666592 -41 48 41.790648132 9.327 9.920 9.767 9.811 9.445 B2V 41 0
59 HD 152235 s*b 16 53 58.8528412848 -41 59 39.577848180 6.47 6.92 6.38 5.84 5.42 B0.5Ia 192 0
60 NGC 6231 284 Y*? 16 53 58.9450563264 -41 47 20.399113140 12.912 12.783 12.338   11.677 B4.5V 11 0
61 NGC 6231 249 Pu* 16 53 59.3149479480 -41 53 04.040266236 11.810 12.132 11.876 12.11 11.504 B4-5V 14 0
62 2MASS J16535997-4146263 Y*? 16 53 59.9749277160 -41 46 26.332486608 12.536 12.727 12.430 12.72 12.011 B 12 0
63 HD 152218 Y*O 16 53 59.9905195488 -41 42 52.817214240 7.02 7.78 7.570   7.243 O9IV+B0:V: 150 0
64 CPD-41 7712 Y*? 16 54 00.3929167800 -41 52 43.523646564 8.607 9.298 9.158   8.838 B1V 32 0
65 CD-41 11023 Y*? 16 54 01.5408522648 -41 49 25.180583160 13.083 13.043 12.736 12.949 12.439 ~ 18 0
66 V* V946 Sco bC* 16 54 01.7631666120 -41 51 11.868345252 9.890 10.471 10.281 10.327 9.927 B2IV-V 47 0
67 HD 152234 s*b 16 54 01.8373779952 -41 48 22.987396952 4.92 5.64 5.45     B0.5Ia 194 0
68 2MASS J16540315-4151492 Y*? 16 54 03.1543694544 -41 51 49.267424952 10.675 11.144 10.907 11.9 10.528 B2-3V 24 0
69 NGC 6231 1 Y*? 16 54 03.5029815552 -41 42 52.052270868 11.900 12.222 11.950   11.522 ~ 13 0
70 HD 152233 SB* 16 54 03.5909222280 -41 47 29.841281484 5.93 6.72 6.59     O6II(f) 194 0
71 NGC 6231 194 Y*O 16 54 03.8074799328 -41 45 48.399381972 11.365 11.722 11.459   11.055 B3.5V 14 0
72 CD-41 11030 SB* 16 54 05.0795262120 -41 50 06.929151792 8.924 9.575 9.457   9.201 B1V 46 0
73 NGC 6231 67 PM* 16 54 05.1268230984 -41 55 46.187288148 12.819 12.204 11.298   10.231 ~ 2 0
74 HD 152246 SB* 16 54 05.2976157264 -41 04 46.117795944 6.69 7.45 7.29 8.19   O9IV 123 1
75 NGC 6231 274 Y*O 16 54 05.9340520296 -41 49 44.616862200 11.644 11.984 11.769   11.419 B3V 14 0
76 CD-41 11048 Y*O 16 54 06.7112222064 -41 50 07.105056468 8.903 9.541 9.421   9.161 B1V 37 0
77 CD-41 11027A Y*? 16 54 06.7182176904 -41 51 06.979097448 8.108 8.848 8.720   8.439 O9.7V 34 0
78 CD-41 11032 SB* 16 54 06.9496123464 -41 49 23.360333088 8.93 9.60 9.512 10.81 9.256 B0.5V 40 0
79 CD-41 11031 Y*? 16 54 07.5342145320 -41 44 40.655325588 9.443 10.051 9.887   9.566 B 22 0
80 NGC 6231 68 Y*O 16 54 07.8186174120 -41 57 38.068661376 13.109 13.227 12.797   12.116 ~ 7 0
81 HD 326340 Y*? 16 54 09.0228207192 -41 58 00.563537352 9.536 10.146 9.930 10.11 9.500 B5 30 0
82 NGC 6231 273 SB* 16 54 09.1491981312 -41 50 12.711714324 12.890 13.070 12.770   12.365 ~ 21 0
83 CPD-41 7727 SB* 16 54 09.2737061088 -41 48 41.072216580 8.964 9.564 9.424   9.134 B1V 37 0
84 NGC 6231 651 Y*? 16 54 10.0311690408 -41 40 02.957776536 11.619 11.722 11.426   10.979 ~ 7 0
85 HD 152248 Y*O 16 54 10.0618206816 -41 49 30.139291596 5.56 6.15 6.088     O7Iabf+O7Ib(f) 258 0
86 NGC 6231 209 Y*? 16 54 10.7255921880 -41 47 47.372416692 10.307 10.795 10.599 10.62 10.265 B2IV-V 30 0
87 NGC 6231 OpC 16 54 10.8 -41 48 43           ~ 538 0
88 NGC 6231 374 Y*? 16 54 10.9603526328 -41 49 39.103879044   10.373 10.157 10.66 9.813 ~ 15 0
89 NGC 6231 381 * 16 54 11 -41 49.7     11.07     ~ 3 0
90 CD-41 11034 Y*? 16 54 11.3119116264 -41 48 53.965557072 8.878 9.546 9.335 9.744 8.943 B1V 42 0
91 HD 152249 s*b 16 54 11.6395658856 -41 50 57.295111524 5.91 6.65 6.45     OC9Iab 239 0
92 2MASS J16541226-4152379 Y*? 16 54 12.2656589688 -41 52 37.834376808 12.742 12.854 12.484   11.914 B8.5V 9 0
93 NGC 6231 199 Y*? 16 54 12.3186845712 -41 46 53.050286532 12.530 12.660 12.374   11.933 Ap 12 0
94 NGC 6231 75 Y*O 16 54 13.0666322088 -41 56 31.114321152 13.054 13.104 12.757   12.216 B8.5V 8 0
95 CD-41 11037 SB* 16 54 13.2253067352 -41 50 32.518100184 7.21 8.08 7.90     O9IV 75 0
96 HD 326329 Y*O 16 54 14.1033282720 -41 50 08.503512720 8.141 9.183 9.013 9.477 8.460 O9.7V 73 0
97 CPD-41 7734 Y*? 16 54 14.2460503200 -41 55 01.326705420 10.103 10.616 10.331 10.25 9.801 B0Vn 28 0
98 NGC 6231 236 Y*? 16 54 14.7168894120 -41 51 11.012092416 11.199 11.614 11.385   11.020 B2.5V 18 0
99 NGC 6231 78 SB* 16 54 15.0912272619 -41 55 29.121897977 11.694 11.920 11.585   11.083 B8.5III 10 0
100 CPD-41 7737 Y*? 16 54 16.3028817696 -41 50 26.660630976 10.456 10.955 10.745 10.71 10.387 B1V 23 0
101 NGC 6231 189 SB* 16 54 16.8013206864 -41 45 08.349698880 11.732 11.847 11.573   11.118 B8-9V 18 0
102 2MASS J16541736-4148294 Y*? 16 54 17.3634089088 -41 48 29.394925740 13.250 12.914 12.424   11.679 ~ 9 0
103 NGC 6231 234 Y*? 16 54 17.4803263056 -41 51 03.545232948 13.152 13.166 12.818   12.309 B8Vn 15 0
104 NGC 6231 213 Y*O 16 54 17.9338413600 -41 48 01.303610616 10.799 11.257 11.059 11.12 10.735 B2IVn 23 0
105 NGC 6231 225 SB* 16 54 18.1360278600 -41 50 16.435116096 13.332 13.392 13.062 13.26 12.553 B9V 13 0
106 V* V964 Sco bC* 16 54 18.3200772432 -41 51 35.651104416 9.126 9.776 9.603 9.61 9.290 B0.5V 59 0
107 HD 326339 Y*? 16 54 19.3229318352 -41 57 30.961268928 10.136 10.501 10.108   9.505 B3 25 0
108 HD 152270 WR* 16 54 19.6991292072 -41 49 11.531710092 6.26 6.80 6.597 6.72 6.39 WC7+O5-8 303 0
109 CD-41 11042 Y*O 16 54 19.8364084848 -41 50 09.378605616 7.733 9.02 8.80 9.23 7.859 O9.5IV 101 0
110 Cl* NGC 6231 SBL 506 * 16 54 19.90 -41 50 20.4 16.989 16.683 15.401   13.611 ~ 2 0
111 NGC 6231 90 Y*? 16 54 20.0110976472 -41 56 01.943952540 12.152 12.418 12.041   11.472 ~ 7 0
112 NGC 6231 233 Y*? 16 54 20.1147403368 -41 51 25.164373644 15.639 15.202 14.120   12.789 ~ 11 0
113 NGC 6231 86 Y*O 16 54 20.3553490440 -41 54 09.021866364 12.791 12.903 12.524   11.968 Ap 9 0
114 Cl* NGC 6231 SBL 512 Y*O 16 54 20.3579349336 -41 49 27.499805184 14.593 14.107 13.522   12.766 ~ 7 0
115 NGC 6231 227 Y*O 16 54 20.3720519760 -41 50 49.236526140 12.674 12.820 12.498   12.024 B7Vn 14 0
116 Cl* NGC 6231 SBL 517 * 16 54 20.6702049696 -41 49 56.137561788 16.099 15.298 14.091   12.731 ~ 2 0
117 Cl* NGC 6231 SBL 518 Y*? 16 54 20.8570819440 -41 50 06.102684564 16.681 15.966 14.909   13.634 ~ 9 0
118 V* V1208 Sco Y*O 16 54 21.3090092232 -41 51 41.766233904 9.293 9.91 9.708 9.96 9.344 B0-2V 47 0
119 NGC 6231 87 * 16 54 21.4992949416 -41 54 28.313592192 13.722 13.646 13.252   12.676 ~ 5 0
120 Cl* NGC 6231 SBL 525 Y*? 16 54 21.5206251816 -41 49 04.557817992 14.742 14.253 13.580   12.674 ~ 6 0
121 NGC 6231 89 * 16 54 21.54 -41 55 34.6 11.074 11.495 11.179   10.669 B2.5III 5 0
122 Cl* NGC 6231 SBL 526 * 16 54 21.5486466792 -41 40 09.735532140 16.959 16.579 15.678   14.539 ~ 3 0
123 NGC 6231 223 Y*O 16 54 21.6930463104 -41 49 54.394363704 11.825 12.011 11.719 11.81 11.302 B6Vn 14 0
124 NGC 6231 217 Y*? 16 54 21.9945751848 -41 48 47.202861852 12.325 12.547 12.248   11.784 B6Vn 12 0
125 Cl* NGC 6231 SBL 530 * 16 54 22.11 -41 41 49.0 17.556 16.135 14.389   12.428 ~ 2 0
126 Cl* NGC 6231 SBL 532 * 16 54 22.1766628776 -41 40 01.716052584 16.268 15.869 15.011     ~ 3 0
127 NGC 6231 228 Y*? 16 54 22.8227615784 -41 50 49.126562448 14.573 14.202 13.730   13.087 ~ 10 0
128 NGC 6231 186 Y*? 16 54 22.8349538304 -41 45 23.377881024 11.409 11.789 11.516   11.074 B2.5V 12 0
129 NGC 6231 187 * 16 54 23.3048126520 -41 44 43.864116216 16.232 15.785 14.824   13.653 ~ 2 0
130 NGC 6231 108 Y*? 16 54 23.4504384648 -41 52 51.219013980 11.324 11.715 11.435   10.983 B2V 25 0
131 HD 152292 * 16 54 23.8175886120 -41 01 46.547990472 7.96 8.62 8.50     B2II/III 37 0
132 Cl* NGC 6231 MG 201 Y*? 16 54 24.1684725168 -41 51 22.247096328 12.172 12.424 12.132   11.666 ~ 8 0
133 NGC 6231 561 * 16 54 24.8113412832 -41 47 43.409132268 15.380 15.094 14.366   13.484 ~ 3 0
134 Cl* NGC 6231 SBL 565 * 16 54 24.9578585136 -41 42 40.362084180 16.359 16.216 15.209   13.889 ~ 3 0
135 Cl* NGC 6231 SBL 566 * 16 54 25.05 -41 50 16.5   17.802 15.796   13.490 ~ 2 0
136 Cl* NGC 6231 SBL 567 * 16 54 25.39 -41 56 29.2 16.845 16.498 15.565   14.385 ~ 2 0
137 NGC 6231 94 * 16 54 25.5308713776 -41 57 14.680879632 13.479 12.964 12.304   11.438 ~ 2 0
138 NGC 6231 106 Y*? 16 54 25.8982369848 -41 53 06.905276736 16.453 16.034 15.001   13.706 ~ 7 0
139 NGC 6231 165 Y*? 16 54 25.9676364672 -41 47 07.020964176 12.624 12.759 12.493   12.066 B7.5V 15 0
140 HD 326331 SB* 16 54 25.9691286216 -41 49 55.768191852 6.886 7.678 7.497   7.143 O8IVn((f)) 80 0
141 2MASS J16542604-4145543 Y*? 16 54 26.0457934152 -41 45 54.287973180 12.238 12.319 11.985   11.492 B8.5V 11 0
142 NGC 6231 105 * 16 54 26.1959411784 -41 53 20.587796232 11.160 11.429 11.088   10.572 ~ 11 0
143 NGC 6231 219 Y*? 16 54 27.5786175288 -41 48 58.653371268 13.085 13.135 12.766   12.225 Ap 10 0
144 NGC 6231 222 Y*? 16 54 27.9736192464 -41 50 13.972594056 11.856 12.119 11.829   11.373 B4Vn 15 0
145 Cl* NGC 6231 SS 147 Y*O 16 54 28.6567201608 -41 53 41.104181724 13.079 13.150 12.775   12.202 ~ 7 0
146 NGC 6231 160 Y*? 16 54 28.9686377592 -41 48 26.136612252 11.857 12.150 11.848   11.369 B3III 11 0
147 HD 322282 Em* 16 54 29.0307145680 -40 41 17.357586144 8.46 9.38 9.45 9.54   Be 26 0
148 Cl* NGC 6231 SBL 594 * 16 54 29.1086359608 -41 52 41.368582848 14.213 14.006 13.545   12.901 ~ 4 0
149 NGC 6231 221 Y*? 16 54 29.7062433432 -41 49 30.320082228 16.469 16.045 15.033 14.8 13.771 ~ 8 0
150 Cl* NGC 6231 SBL 599 * 16 54 29.7664605696 -41 49 59.262242484 18.634 16.853 15.212   13.411 ~ 2 0
151 NGC 6231 95 Y*? 16 54 30.6847656072 -41 57 15.181420932 14.118 13.955 13.493   12.830 ~ 7 0
152 NGC 6231 139 Y*? 16 54 30.8592405360 -41 51 00.051776280 14.828 14.438 13.925   13.259 ~ 8 0
153 HD 326319 * 16 54 31.1403111648 -41 38 40.715436876   10.94 10.58     A0 14 0
154 V* V1212 Sco dS* 16 54 31.2204545496 -41 55 28.604944992 10.728 10.401 9.945 9.86 9.347 F0III 27 0
155 Cl* NGC 6231 SS 155 Y*O 16 54 31.2511485936 -41 48 02.663720820 12.014 12.116 11.817   11.359 ~ 7 0
156 Cl* NGC 6231 SBL 614 * 16 54 31.4229105336 -41 47 56.542254252 17.832 16.833 15.535   14.047 ~ 3 0
157 HD 152314 Y*? 16 54 32.0048577720 -41 48 18.848961036 7.256 7.974 7.749 9.01 7.446 O9IV 108 0
158 NGC 6231 96 Y*? 16 54 32.1272389800 -41 56 53.414142036 10.942 11.386 11.052   10.525 B1.5V 8 0
159 Cl Trumpler 24 104 Y*? 16 54 32.4032168136 -41 40 17.541935652 11.722 12.12 11.77 11.85 11.301 ~ 8 0
160 Cl* NGC 6231 SS 157 Y*? 16 54 32.4703050696 -41 50 08.507592384 14.028 13.720 13.217   12.640 ~ 8 0
161 NGC 6231 137 Y*O 16 54 32.8351008312 -41 51 23.985472212 11.946 12.122 11.762   11.224 ~ 12 0
162 NGC 6231 162 * 16 54 32.9678730000 -41 47 59.117878824 11.040 11.400 11.141   10.739 ~ 10 0
163 Cl* NGC 6231 SBL 629 * 16 54 33.49 -41 53 11.9 16.998 16.554 15.527   14.282 ~ 3 0
164 Cl* NGC 6231 SBL 631 * 16 54 33.5244941328 -41 53 28.468839048 17.080 16.732 15.769   14.505 ~ 3 0
165 Cl* NGC 6231 MG 160 Y*O 16 54 33.8462826984 -41 50 05.652586788 14.677 14.317 13.828   13.185 ~ 6 0
166 Cl* NGC 6231 SBL 635 * 16 54 33.9925317624 -41 41 19.650912504 16.890 16.462 15.505   14.344 ~ 3 0
167 NGC 6231 97 * 16 54 34.11 -41 57 00.0 12.672 12.802 12.431   11.872 A0p 4 0
168 V* V1214 Sco gD* 16 54 34.1913765240 -41 54 48.514480740 16.371 16.004 15.118   13.956 ~ 5 0
169 NGC 6231 115 Y*? 16 54 35.2821848544 -41 54 49.759853112 11.408 11.753 11.473   11.033 ~ 7 0
170 NGC 6231 133 * 16 54 35.3732715384 -41 52 15.102066720 14.656 14.399 13.772   12.952 ~ 5 0
171 NGC 6231 152 Y*? 16 54 35.7137568144 -41 49 42.609738900 12.470 12.676 12.371   11.900 B5V 14 0
172 HD 326332 Y*O 16 54 35.8130819496 -41 50 12.216189984 9.275 9.903 9.669 9.96 9.275 B2IVe+ 51 0
173 V* V947 Sco bC* 16 54 36.0500878224 -41 53 38.119259292 9.45 10.06 9.78 10.06   B1V 52 0
174 Cl* NGC 6231 SBL 666 * 16 54 37.4189106264 -41 54 20.913004404 16.716 16.141 15.276   14.145 ~ 3 0
175 WRAY 15-1560 Be* 16 54 37.4423306424 -41 47 07.186810056 11.905 12.100 11.771   11.227 Be 15 0
176 2MASS J16543867-4152395 Y*? 16 54 38.6704018344 -41 52 39.523794852 13.089 13.030 12.591   11.947 ~ 10 0
177 CPD-41 7755 Y*? 16 54 39.8785805856 -41 53 38.480359596 9.675 10.273 10.068 11.4 9.705 B1V 38 0
178 Cl* NGC 6231 SBL 688 * 16 54 40.7484638472 -41 42 27.470203704 14.773 14.510 13.833   12.971 ~ 3 0
179 NGC 6231 130 Y*O 16 54 40.7709542328 -41 52 37.787147364 13.565 13.433 12.871   12.126 ~ 13 0
180 NGC 6231 113 * 16 54 40.9878810144 -41 53 27.731058864 16.187 14.493 12.879   11.177 ~ 4 0
181 HD 326317 Y*O 16 54 41.2161553920 -41 39 01.815871968 9.72 10.4 10.2     B2 21 0
182 NGC 6231 173 Y*? 16 54 42.3103676808 -41 45 58.233921876 13.265 13.248 12.927   12.430 ~ 10 0
183 Cl* NGC 6231 SBL 703 Y*? 16 54 42.3338770512 -41 49 28.170117372 16.991 16.539 15.433   14.044 ~ 7 0
184 Cl* NGC 6231 SBL 707 * 16 54 42.4572791328 -41 46 30.252041544 20.903 18.248 15.678   12.737 ~ 2 0
185 NGC 6231 140 * 16 54 42.55 -41 51 26.1 11.793 11.914 11.510 11.9 10.898 ~ 8 0
186 NGC 6231 122 Y*? 16 54 42.5568379416 -41 55 17.002887168 13.333 13.337 12.973   12.471 ~ 7 0
187 V* V920 Sco bC* 16 54 43.1657949576 -41 49 35.456774916 9.153 9.795 9.601 9.95 9.256 B1V 65 0
188 Cl* NGC 6231 SBL 711 * 16 54 43.17 -41 53 59.4 19.977 17.945 15.897   13.559 ~ 3 0
189 Cl* NGC 6231 SBL 716 * 16 54 44.1792137856 -41 59 05.144890668 16.743 16.277 15.228   13.916 ~ 2 0
190 NGC 6231 123 Y*? 16 54 44.1866518992 -41 55 08.608420632 12.348 12.602 12.311   11.861 ~ 11 0
191 NGC 6231 121 Y*? 16 54 44.2080316248 -41 56 27.202831728 11.037 11.50 11.217 11.30 10.801 ~ 13 0
192 Cl* NGC 6231 SBL 720 * 16 54 44.40 -41 53 20.8 17.027 16.600 15.693   14.578 ~ 2 0
193 NGC 6231 168 Y*? 16 54 44.5929493800 -41 47 44.432901060 14.695 14.271 13.746   13.064 ~ 10 0
194 NGC 6231 172 * 16 54 44.64 -41 46 44.3 13.216 13.165 12.838   12.324 ~ 7 0
195 NGC 6231 175 Y*? 16 54 44.8910402928 -41 44 59.511407244 13.677 13.608 13.274   12.779 B9V 9 0
196 Cl* NGC 6231 SBL 727 * 16 54 45.0508712760 -41 56 37.444104204 17.497 16.777 15.759   14.650 ~ 2 0
197 Cl* NGC 6231 SBL 732 * 16 54 45.3736119768 -41 42 15.397817760 15.758 15.341 14.678   13.792 ~ 2 0
198 Cl* NGC 6231 SBL 738 * 16 54 46.3450426632 -41 47 26.961667188 16.846 16.384 15.480   14.383 ~ 3 0
199 Cl* NGC 6231 SBL 740 * 16 54 46.4191950576 -41 44 13.845040584 14.783 14.511 13.735   12.761 ~ 3 0
200 NGC 6231 171 Y*? 16 54 46.5478353841 -41 46 44.718986846 14.860 14.419 13.867   13.137 ~ 4 0
201 NGC 6231 127 * 16 54 47.2746239112 -41 52 49.572768180 12.143 12.398 12.033   11.460 B8III-IV 11 0
202 2MASS J16544772-4150477 Y*? 16 54 47.7220274112 -41 50 47.741743068 12.190 12.466 12.155   11.662 ~ 9 0
203 NGC 6231 143 * 16 54 47.7933503280 -41 50 35.050621848 15.441 14.974 14.410   13.662 ~ 5 0
204 NGC 6231 126 * 16 54 48.7493678832 -41 52 30.712565064 12.856 12.602 12.239   11.771 B1V 7 0
205 CD-41 11062 ** 16 54 50.35416 -42 01 26.6952 9.47 9.941   9.800   B2V 17 0
206 Cl* NGC 6231 SBL 762 * 16 54 51.6900555240 -41 47 16.265455224 16.934 16.639 15.805   14.702 ~ 2 0
207 Cl* NGC 6231 SBL 768 * 16 54 53.2797937608 -41 51 34.928066808 17.487 16.928 15.881   14.640 ~ 2 0
208 HD 326334 Y*O 16 54 53.4167885112 -41 47 07.508743008 10.450 10.942 10.738 10.85 10.383 B3 19 0
209 Cl* NGC 6231 SBL 772 * 16 54 53.6848043856 -41 49 59.656701828 16.966 16.400 15.228   13.899 ~ 3 0
210 2MASS J16545369-4149125 Y*? 16 54 53.6971664328 -41 49 12.537580404 12.810 12.693 12.319   11.775 B9.5V 6 0
211 Cl* NGC 6231 SBL 775 * 16 54 54.33 -41 42 10.0 19.959 18.082 15.835   13.334 ~ 3 0
212 Cl* NGC 6231 SBL 779 * 16 54 55.3435168632 -41 59 38.540033052 15.831 15.457 14.633   13.655 ~ 4 0
213 Cl* NGC 6231 SBL 780 * 16 54 55.8546668856 -41 45 40.770303372 16.284 15.910 15.067   14.037 ~ 3 0
214 Cl* NGC 6231 SBL 783 * 16 54 56.8753139544 -41 55 57.116969184 17.231 16.496 15.442   14.191 ~ 3 0
215 Cl* NGC 6231 SBL 785 * 16 54 57.0772056624 -41 44 40.580656296 15.983 15.603 14.813   13.811 ~ 2 0
216 Cl* NGC 6231 SBL 788 * 16 54 57.77 -41 57 01.1 17.747 16.901 15.757   14.460 ~ 3 0
217 NGC 6231 146 Y*? 16 54 58.2510917784 -41 49 17.768602704 11.199 11.565 11.290   10.886 ~ 6 0
218 Cl* NGC 6231 SBL 792 Y*? 16 54 58.7034584160 -41 43 14.849975820 16.925 16.419 15.271   13.852 ~ 6 0
219 Cl* NGC 6231 SBL 794 * 16 54 59.1572928384 -41 47 36.078518328 16.760 16.358 15.491   14.363 ~ 3 0
220 Cl* NGC 6231 SBL 793 Y*O 16 54 59.2324503168 -41 54 37.856041128 17.442 16.679 15.287   13.602 ~ 8 0
221 Cl* NGC 6231 SBL 799 * 16 55 00.52 -41 46 18.7 14.445 13.667 12.424   11.017 ~ 2 0
222 Cl* NGC 6231 SBL 801 * 16 55 00.9788118600 -41 46 42.976831584 15.975 15.585 14.747   13.670 ~ 2 0
223 Cl* NGC 6231 SBL 803 * 16 55 01.2922615512 -41 56 00.221448552 16.801 16.399 15.503   14.298 ~ 3 0
224 Cl* NGC 6231 SBL 805 * 16 55 01.76 -41 42 09.9 16.908 16.488 15.503   14.289 ~ 3 0
225 Cl* NGC 6231 SBL 806 * 16 55 01.92 -41 53 03.7 17.093 16.438 15.443   14.298 ~ 2 0
226 NGC 6231 786 * 16 55 02.0027399328 -41 43 00.223509648 14.132 13.950 13.527   12.795 ~ 4 0
227 Cl* NGC 6231 SBL 809 * 16 55 02.16 -41 57 31.8 15.968 14.759 13.501   12.233 ~ 2 0
228 Cl* NGC 6231 SBL 814 * 16 55 02.86 -41 53 12.6 17.248 16.704 15.702   14.508 ~ 2 1
229 Cl* NGC 6231 SBL 815 * 16 55 03.4560545280 -41 49 32.625927912 17.015 16.212 15.003   13.587 ~ 3 0
230 Cl* NGC 6231 SBL 817 * 16 55 03.6911984304 -41 42 13.107195936 13.676 13.693 13.332   12.764 ~ 3 0
231 Cl Trumpler 24 370 * 16 55 03.7837383312 -41 59 56.921266536 12.278 12.095 11.573   10.893 ~ 5 0
232 HD 152437 * 16 55 12.1252688424 -41 56 40.100431848   9.32 9.15 9.1   B9III/IV 16 0
233 HD 152560 * 16 55 55.2053721480 -41 01 30.500346108 7.49 8.23 8.10 9.13   O9.5IV 49 0
234 V* V1297 Sco SB* 16 56 05.2157203176 -40 20 57.576260184 7.87 9.11 9.29 9.29   O7.5Vz 138 0
235 HD 152623 ** 16 56 15.0265311912 -40 39 35.892252936 5.95 8.70 8.64 7.68   O7V(n)((f))z 109 0
236 HD 152622 * 16 56 17.1076713840 -40 29 44.517803352 7.59 9.03 9.17 8.93   B1/2Ib/II 46 1
237 HD 322447 Be* 16 56 18.0191367936 -40 40 48.755377092 8.29 9.30 9.48 9.53   B1IV 32 0
238 HD 322432 * 16 56 36.8512540488 -40 34 04.924043328 8.58 9.71 9.56     B5 20 0
239 HD 322422 Be* 16 57 23.9361739824 -40 21 39.902880420 9.50 9.94 9.97 9.98   B1Ve 42 0
240 HD 153677 * 17 02 46.4044947288 -40 54 45.549250308 7.81 8.24 8.16     B2/3II 29 0
241 NGC 6281 OpC 17 04 43.0 -37 56 53           ~ 137 0
242 NGC 6475 OpC 17 53 47.3 -34 50 28           ~ 384 0
243 M 16 OpC 18 18 45.1 -13 47 31           ~ 1028 1
244 Ass Ser OB 1 As* 18 21 -14.4           ~ 75 0

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