1998AJ....116.1314E

Query : 1998AJ....116.1314E

1998AJ....116.1314E - Astron. J., 116, 1314-1322 (1998/September-0)

The Scorpius OB2 complex.

EGGEN O.J.

Abstract (from CDS):

The Sco OB2 complex is a member of the Local Association. The association contains pre-main-sequence stars in addition to objects some 3x107 yr old. If it is assumed that stars in wide binaries are coeval, then the He-weak variables in the supercluster are pre-main-sequence, elevated above that sequence by an amount similar to that of the 3x107 yr old, normal stars but contracting toward the sequence, not evolving from it. The apparent great depth of the association is probably a result of some foreground supercluster members, superposed on Sco OB2, and a rift in the absorption cloud between Scorpius and Ophiuchus. The adjoining Chamaeleon complex also appears to be a member of the supercluster.

Abstract Copyright: ∼

Journal keyword(s): Galaxy: Open Clusters and Associations: Individual: Name: Scorpius OB2

Simbad objects: 102

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Number of rows : 102
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 Cl Melotte 20 MGr 03 26 50.6 +48 51 48           ~ 928 0
2 V* V539 Per BY* 03 34 29.3476462920 +49 21 43.513515540           K4 32 0
3 Cl Melotte 22 OpC 03 46 38.0 +24 10 41           ~ 3679 0
4 HD 97048 Ae* 11 08 03.3109731720 -77 39 17.490777444 9.03 8.76 9.00   8.64 A0Vep 590 0
5 HD 97300 Ae* 11 09 50.0199904704 -76 36 47.718191232   9.41 9.20   8.82 B9V 190 1
6 NAME Chamaeleon Region SFR 11 55 -78.0           ~ 887 0
7 * eps Cha ** 11 59 37.57634 -78 13 18.6179           B9V(n) 111 0
8 V* DX Cha Ae* 12 00 05.0868602544 -78 11 34.565724312   6.81 6.60     A4V 365 0
9 * 3 Cen ** 13 51 49.60136 -32 59 38.7067           B5III+B9IV 256 0
10 * 3 Cen B SB* 13 51 50.2001706768 -32 59 40.835351220   5.94 5.98     B9IV 62 0
11 * a Cen Ro* 14 23 02.2387240143 -39 30 42.544559700 3.50 4.24 4.42 4.53 4.70 B2V 289 0
12 HD 139160 SB* 15 37 28.4996647464 -26 16 47.509681800 5.76 6.171 6.194     B9IV 96 0
13 * tau Lib SB* 15 38 39.3694957 -29 46 39.895604   3.481 3.642     B2.5V 170 0
14 HD 140367 * 15 42 30.8950975440 +20 35 55.463581932   9.78 8.24     K2 12 0
15 * psi02 Lup SB* 15 42 41.0197420380 -34 42 37.467073334 4.08 4.576 4.721     B5V 122 0
16 HD 140784 ** 15 46 44.2174303104 -34 40 56.830010556   5.481 5.600     B8V 63 0
17 HD 140958 * 15 47 51.1605189192 -38 15 36.031177944   8.27 8.06     A6V 34 0
18 * b Sco * 15 50 58.7444628720 -25 45 04.658676984 3.84 4.552 4.635     B1.5Vn 305 0
19 HD 142097 * 15 53 21.9261091440 -21 58 16.647117852   8.80 8.39     A5V 53 0
20 * 2 Sco ** 15 53 36.71880 -25 19 37.7087 3.86 4.52 4.59     B2.5Vn 169 0
21 HD 142165 SB* 15 53 53.9142283800 -24 31 59.373289920 4.95 5.350 5.372     B5V 146 0
22 HD 142184 Be* 15 53 55.8637866220 -23 58 41.143370530 4.77 5.352 5.402     B2V 261 1
23 HD 142250 * 15 54 30.1089445104 -27 20 19.085902512   6.07 6.10     B7V 122 0
24 * 3 Sco Ro* 15 54 39.5296532472 -25 14 37.459966128 5.23 5.81 5.87     B8III/IV 232 0
25 HD 142315 SB* 15 54 41.5962061728 -22 45 58.513986900   6.887 6.861     B9V 126 0
26 * 47 Lib Ro* 15 55 00.3615238176 -19 22 58.554643620   5.930 5.957     B2/3V 125 0
27 HD 142705 Ro* 15 56 47.8547012448 -23 11 02.668136316   7.92 7.74     A1Vann 69 0
28 * rho Sco SB* 15 56 53.0772000457 -29 12 50.667996815 2.84 3.66 3.86 3.97 4.17 B2IV-V 221 0
29 HD 142883 Ce* 15 57 40.4636201088 -20 58 59.082560004   5.839 5.836     B3V 156 0
30 V* V928 Sco a2* 15 57 48.8021454576 -23 31 38.294134176   6.755 6.771     B8/9III 123 0
31 V* V913 Sco Ro* 15 58 34.8665694960 -24 49 53.361727284 4.70 5.34 5.43     B5V 226 0
32 * pi. Sco SB* 15 58 51.1132378 -26 06 50.788602 1.82 2.71 2.91 3.00 3.20 B1V+B2:V: 415 0
33 * del Sco SB* 16 00 20.00528 -22 37 18.1431 1.30 2.20 2.32 2.36 2.49 B0.3IV 776 0
34 HD 143567 * 16 01 55.4547295632 -21 58 49.398900888   7.27 7.19 7.87   B9Van 145 0
35 HD 143600 Ro* 16 02 13.5553901832 -22 41 15.211826808   7.40 7.33     B9Vn 95 0
36 * bet01 Sco bC* 16 05 26.2319826 -19 48 19.630018 1.68 2.55 2.62 2.60 2.69 B1V 577 0
37 * bet02 Sco SB* 16 05 26.5686169680 -19 48 06.845424840 4.19 4.87 4.89 5.58   B2V 229 0
38 HD 144254 ** 16 05 43.3887407808 -21 50 19.547779272   7.96 7.78     A1VankA0.5 47 0
39 HD 144334 ** 16 06 06.3891324384 -23 36 22.849641396 5.29 5.84 5.92     B8V 203 0
40 * tet Lup Pu* 16 06 35.5439828160 -36 48 08.173906632 3.36 4.027 4.201     B2.5Vn 130 0
41 * ome Sco bC* 16 06 48.4249866846 -20 40 09.079866331 3.10 3.92 3.97 3.91 3.99 B1V 492 0
42 HD 144661 * 16 07 51.8878572504 -24 27 44.447463108 5.74 6.27 6.33     B8IV/V 167 0
43 HD 144591 * 16 08 04.3798309776 -36 13 54.598017648   6.69 6.74     B9V 39 0
44 V* V856 Sco Ae* 16 08 34.2870044544 -39 06 18.325711332 7.66 7.41 7.05 6.92   A9V_sh 405 0
45 V* V1027 Sco a2* 16 08 34.5616203192 -39 05 34.278268848   6.552 6.629 6.66   A0/3III 204 0
46 HD 144823 Ro* 16 08 43.6654824120 -25 22 36.572585484   9.28 8.80     F3V 45 0
47 HD 144844 V* 16 08 43.7202865416 -23 41 07.483461252 5.59 5.90 5.88     B9V 168 0
48 HD 144981 ** 16 09 20.8887100392 -19 27 25.962756444   8.22 8.04     A0.5Vn 69 0
49 HD 145694 * 16 09 25.9733470800 +55 49 44.306111820 8.440 7.490 6.400     K0 37 0
50 V* V952 Sco a2* 16 10 15.9221226696 -26 54 32.879906064   6.634 6.587     ApSi 93 0
51 HD 145408 ** 16 11 50.68672 -27 33 09.8053           A5/7(III)+F(5) 24 0
52 HD 145468 * 16 11 52.6579310256 -22 32 42.119873664   8.56 8.24     A3V 56 0
53 HD 145467 * 16 11 55.5179774208 -21 06 18.009343296   9.42 8.97     F0V 45 0
54 * nu. Sco ** 16 11 59.73568 -19 27 38.5361 3.42 4.05 4.00 3.90 3.87 B2V 404 0
55 * 12 Sco ** 16 12 16.03911 -28 25 02.3122           B9V 79 0
56 * c02 Sco SB* 16 12 18.2046168820 -27 55 34.953285603 3.66 4.413 4.568     B2V 201 0
57 HD 145554 * 16 12 21.8331209856 -19 34 44.569291728   7.77 7.64     B9V 106 0
58 HD 145792 a2* 16 13 45.4979280816 -24 25 19.529982106   6.43 6.43   6.14 B6IV 137 0
59 HD 145964 * 16 14 28.8827284680 -21 06 27.491575572   6.407 6.405     B9V 91 0
60 HD 146001 * 16 14 53.4294665736 -25 28 37.100440632 5.73 6.09 6.05     B8V 161 0
61 NAME Upper Sco-Cen As* 16 15 -24.2           ~ 1497 1
62 HD 146069 ** 16 15 09.2806248672 -23 45 35.040285036   10.01 9.48     F2V 54 0
63 HD 146070 PM* 16 15 19.0934107848 -27 12 36.940048488   8.15 7.54     G1V 59 0
64 HD 146285 Ro* 16 16 25.1723345064 -24 59 19.464122400   8.12 7.92   7.47 B8V 94 0
65 HD 146416 * 16 16 58.7661399648 -21 18 14.875080156   6.608 6.601     B9V 98 0
66 HD 146606 * 16 18 16.1597216880 -28 02 30.148755612   7.05 7.06     A0V 73 0
67 HD 146706 V* 16 18 28.2567201984 -23 16 27.487470684 7.60 7.69 7.55     B9Van 71 0
68 HD 147009 * 16 20 03.9804239064 -20 02 41.528806944   8.32 8.06     A0V 97 1
69 V* V933 Sco a2* 16 20 05.4927999744 -20 03 23.030685720   7.56 7.40     B8:VpSrTiSiEu 204 0
70 HD 147103 ** 16 20 30.2664039984 -20 07 03.776227176   7.87 7.56     B9/A0V 59 1
71 HD 147104 * 16 20 30.5682271248 -20 06 51.999342408   8.81 8.41     B9.5Va 60 0
72 * omi Sco V* 16 20 38.1737722092 -24 10 09.495477665 5.99 5.40 4.57 3.69 2.93 A5II 269 0
73 * sig Sco bC* 16 21 11.3157134 -25 35 34.051476 2.32 3.02 2.89 1.69 1.58 B1III+B1:V 898 0
74 HD 147196 Be* 16 21 19.1910323616 -23 42 28.738330020 7.04 7.21 7.04     B6.5V 118 0
75 HD 147343 dS* 16 22 19.8995879745 -24 21 48.044080038 10.42 10.02 9.36     A1III/IV 73 0
76 HD 147384 * 16 22 36.7286031696 -24 22 58.684301292 9.24 9.03 8.62 3.47 3.33 A0V 67 0
77 HD 147432 ** 16 22 51.77663 -23 07 07.5271           A1III/IV 44 0
78 HD 147553 ** 16 23 56.71426 -33 11 57.8305   6.47 6.46     B9.5V(n)+A1V(n) 59 0
79 HD 147648 Y*O 16 24 02.9029575912 -25 24 54.073102104 10.39 10.10 9.49 9.726 8.20 B8II 72 0
80 HD 147701 Ro* 16 24 21.3184926168 -25 01 31.448678376 9.66 9.74 9.20   7.42 B5III 143 0
81 HD 147809 ** 16 24 59.1476326440 -25 21 17.974751148   9.02 8.62     A1V 68 0
82 HD 147888 ** 16 25 24.2915998776 -23 27 36.747568152 6.71 7.05 6.74     B3V 228 0
83 * rho Oph B * 16 25 35.0324153856 -23 26 46.923516744   5.26 6.66     B2V 137 0
84 HD 147932 ** 16 25 35.0813422344 -23 24 18.806143896 7.24 7.59 7.27     B7V 142 0
85 * rho Oph A SB* 16 25 35.1185711280 -23 26 49.831640736 4.3 5.22 5.05     B1V 444 0
86 HD 147890 a2* 16 25 39.1394428392 -29 24 01.615881024   7.84 7.69     ApSi 85 0
87 * alf Sco s*r 16 29 24.45970 -26 25 55.2094 4.08 2.75 0.91 -0.64 -1.87 M1.5Iab+B2Vn 786 0
88 HD 148562 TT* 16 29 54.5953266552 -24 58 46.075015272 8.08 7.99 7.81     A2V 73 0
89 * i Sco * 16 30 12.4752690460 -25 06 54.796568058 3.93 4.72 4.79 4.85 4.99 B2.5V 319 1
90 * tau Sco * 16 35 52.9528530 -28 12 57.661515 1.55 2.56 2.81 2.93 3.18 B0V 959 0
91 HD 149883 * 16 38 36.2885005272 -26 59 21.641744436   8.55 8.44     B9IV 33 0
92 HD 150347 * 16 41 35.4843257376 -28 35 10.937613444   9.06 8.97     ApSi 34 0
93 HD 150589 * 16 43 05.3848676496 -26 27 30.882057156   8.81 8.43     F2V 44 0
94 HD 151346 Ro* 16 47 46.5285400080 -23 58 27.525918576 8.12 8.31 7.90     B8II 92 0
95 * mu.01 Sco Be* 16 51 52.2283548696 -38 02 50.638070400 1.98 2.82 2.98     B1V+B 305 0
96 * mu.02 Sco bC? 16 52 20.1453198 -38 01 03.125839 2.52 3.343 3.542     B2IV 161 0
97 * 28 Oph * 17 04 00.8135058096 -25 41 52.800846036   6.56 6.64     B9IV/V 28 0
98 HD 154204 * 17 04 45.3265142592 -20 29 40.937939412   6.28 6.30     B7IV/V 62 0
99 HD 155235 PM* 17 11 20.9247850632 -25 01 53.884826724   8.76 8.30     F3IV/V 25 0
100 * tet Oph bC* 17 22 00.5793468 -24 59 58.366974 2.18 3.03 3.26 3.38 3.58 OB 350 0
101 V* V686 CrA a2* 18 56 40.4859327624 -37 20 35.701261512 4.53 5.24 5.38     B3V 214 0
102 Ass Cha OB 1 * ~ ~           ~ 1 0

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