2007A&A...470..685L

Query : 2007A&A...470..685L

2007A&A...470..685L - Astronomy and Astrophysics, volume 470685-698 (2007/8-1)

Searching for links between magnetic fields and stellar evolution. II. The evolution of magnetic fields as revealed by observations of Ap stars in open clusters and associations.

LANDSTREET J.D., BAGNULO S., ANDRETTA V., FOSSATI L., MASON E., SILAJ J. and WADE G.A.

Abstract (from CDS):

The evolution of magnetic fields in Ap stars during the main sequence phase is presently mostly unconstrained by observation because of the difficulty of assigning accurate ages to known field Ap stars. We are carrying out a large survey of magnetic fields in cluster Ap stars with the goal of obtaining a sample of these stars with well-determined ages. In this paper we analyse the information available from the survey as it currently stands. We select from the available observational sample the stars that are probably (1) cluster or association members and (2) magnetic Ap stars. For the stars in this subsample we determine the fundamental parameters Teff, L/L☉, and M/M☉. With these data and the cluster ages we assign both absolute age and fractional age (the fraction of the main sequence lifetime completed). For this purpose we have derived new bolometric corrections for Ap stars. Magnetic fields are present at the surfaces of Ap stars from the ZAMS to the TAMS. Statistically for the stars with M>3M☉ the fields decline with advancing age approximately as expected from flux conservation together with increased stellar radius, or perhaps even faster than this rate, on a time scale of about 3x107yr. In contrast, lower mass stars show no compelling evidence for field decrease even on a timescale of several times 108yr. Study of magnetic cluster stars is now a powerful tool for obtaining constraints on evolution of Ap stars through the main sequence. Enlarging the sample of known cluster magnetic stars, and obtaining more precise rms fields, will help to clarify the results obtained so far. Further field observations are in progress.

Abstract Copyright: ∼

Journal keyword(s): stars: magnetic fields - stars: chemically peculiar - open clusters and associations: general - stars: fundamental parameters - stars: evolution - stars: early-type

Simbad objects: 214

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Number of rows : 214
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 Blanco 1 OpC 00 03 04.1 -29 48 55           ~ 380 0
2 HD 225264 SB* 00 04 50.8236837768 -29 37 58.940860980   8.28 8.28     A0IV 80 0
3 HD 16605 * 02 40 58.9394814960 +42 52 16.597055784   9.68 9.63     A1pSiCrSr 54 0
4 NGC 1039 OpC 02 42 09.1 +42 44 02           ~ 467 0
5 HD 19805 * 03 13 05.2560841728 +49 00 33.855831288   8.07 7.96     B9.5V 101 0
6 HD 20135 ** 03 16 01.9159668360 +48 01 40.437111108   8.29 8.09     A0p 44 0
7 ACO 426 ClG 03 19 47.6 +41 30 54           ~ 2508 1
8 * alf Per V* 03 24 19.3700924 +49 51 40.245455 2.64 2.27 1.79     F5Ib 870 1
9 HD 21699 Pu* 03 32 08.6084197968 +48 01 24.528548676 4.81 5.355 5.461     B9III 220 0
10 HD 22401 * 03 38 15.5822862528 +47 34 37.125835932   7.47 7.46     A0V 104 0
11 HD 23387 ** 03 45 37.7883282408 +24 20 08.303093844   7.33 7.19   6.96 A1V 131 0
12 * 20 Tau PM* 03 45 49.6081548365 +24 22 03.877565838 3.40 3.80 3.87 3.85 3.90 B7III 451 1
13 Cl Melotte 22 OpC 03 46 38.0 +24 10 41           ~ 3679 0
14 NGC 1662 OpC 04 48 48.5 +10 52 46   7.0 6.4     ~ 149 0
15 HD 30598 Pu* 04 49 26.6631788328 +10 59 18.226855284   9.41 9.13     A1V 46 0
16 HD 35008 * 05 21 28.4325365328 -01 32 46.442508864   7.034 7.099     B5V 75 0
17 V* V1156 Ori Ro* 05 23 50.3591328504 +02 04 55.824899052   7.78 7.91     B7IV 150 0
18 HD 35456 ** 05 24 40.3787180856 -02 29 52.248170436   6.877 6.950     B9II/III 91 0
19 HD 35502 SB* 05 25 01.2041767248 -02 48 55.690705872 6.76 7.30 7.34 7.32 7.40 B5IVsnp 135 0
20 HD 36046 * 05 28 52.5896432256 -00 36 11.018052396   7.96 8.06     B9II 67 0
21 V* V1093 Ori a2* 05 30 45.2295918768 -00 22 24.267744120   8.15 8.21     ApSi 80 0
22 HD 36429 * 05 31 41.2246402248 +02 49 58.188570312   7.43 7.56     B7II 82 0
23 * del02 Ori SB* 05 32 00.4064140728 -00 17 04.347484800 5.97 6.67 6.83     B2Vsn 296 0
24 V* V1099 Ori Pu* 05 32 13.0812769464 -01 36 01.745707500 7.6 8.18 8.29     B8II 107 0
25 HD 36540 ** 05 32 14.8277325720 -04 31 06.193607664 7.71 8.19 8.16     B7IVp 113 1
26 HD 36549 Pe* 05 32 39.4835831448 +02 05 31.822127628   8.50 8.54     B8Vp 67 0
27 HD 36629 Y*O 05 32 57.0824474232 -04 33 59.339585016 7.01 7.67 7.65 7.53 7.53 B2V 201 0
28 V* V1107 Ori Ro* 05 33 26.0574398904 +00 37 16.914334620   7.94 8.05     B8V 101 0
29 Ass Ori OB 1b As* 05 34.0 -01 30           ~ 281 0
30 HD 36918 * 05 34 49.1226628608 -06 00 22.931336556 7.69 8.19 8.26     B8.3 66 0
31 V* V1045 Ori a2* 05 34 53.9637586032 -04 06 37.494251928 6.08 6.569 6.709     B9III 148 0
32 HD 36960 * 05 35 02.6823091513 -06 00 07.308349203 3.52 4.50 4.72     B0.5V 283 0
33 HD 36982 Or* 05 35 09.8363878512 -05 27 53.216296776 8.00 8.58 8.46     B2V 225 0
34 HD 290665 * 05 35 10.5066304368 -00 50 12.984148392   9.54 9.44     B9 46 0
35 * tet01 Ori C SB* 05 35 16.4662967280 -05 23 22.921811880 4.20 5.15 5.13 4.91 4.73 O7Vp 1479 1
36 NAME Ori Trapezium OpC 05 35 16.5 -05 23 14           ~ 1708 1
37 Ass Ori OB 1c As* 05 35 21 -05 20.5           ~ 142 1
38 HD 37017 SB* 05 35 21.8667428568 -04 29 39.024375324 5.66 6.43 6.56 6.61 6.74 B2/3V 318 0
39 HD 37058 Or* 05 35 33.3539646576 -04 50 15.181113696 6.40 7.18 7.30     B3/5II 177 0
40 HD 37140 a2* 05 36 18.7626483096 -00 18 13.191518088 8.24 8.65 8.55 8.37 8.31 B8II 103 0
41 V* V1133 Ori a2* 05 36 30.9592251264 -06 27 13.813302564 7.62 8.03 8.10     B9IV/V 91 0
42 HD 37333 Y*O 05 37 40.4746109712 -02 26 36.837308472   8.59 8.51   8.420 A1Va(Si) 58 0
43 NAME Ori I As* 05 38 -02.8           ~ 653 0
44 HD 37470 * 05 38 34.7255414376 -06 09 49.954286772   8.26 8.23     B8/9III 83 0
45 * sig Ori E Y*O 05 38 47.2050040320 -02 35 40.521424812 5.66 6.38 6.46 6.84 7.08 B2IV-Vp_He 486 0
46 HD 37633 a2* 05 39 46.1985525288 -02 40 32.112574536   9.07 8.99   8.940 B9.5IIIpSi 67 0
47 V* V1148 Ori a2* 05 39 55.4228747568 -03 19 49.817505540   7.93 8.04     ApSrEu 97 0
48 V* V901 Ori Ro* 05 40 56.3704617744 -01 30 25.856677224 5.96 6.82 6.96     B2V 354 2
49 V* V1356 Ori a2* 06 08 24.1247449056 +13 56 47.872901400   10.0 10.855 10.76   A0V 51 0
50 NGC 2169 OpC 06 08 31.0 +13 57 46   5.99 5.9     ~ 173 0
51 NGC 2232 OpC 06 27 45.6 -04 44 26           ~ 212 0
52 V* V682 Mon a2* 06 28 10.7659506576 -04 53 56.511231684   7.85 7.97     ApSi 100 0
53 NGC 2244 OpC 06 32 06.9 +04 54 19           ~ 673 1
54 NGC 2244 334 Y*O 06 32 51.7919732079 +04 47 16.160568228 13.17 13.38 12.95 12.46 12.34 B5V 48 0
55 HD 49023 * 06 45 35.5128422400 -20 40 51.386328048   8.32 8.36     B8/A0V 48 0
56 M 41 OpC 06 46 03.1 -20 43 07   4.89 4.5     ~ 308 0
57 CPD-20 1640 EB* 06 46 43.2854906880 -20 54 47.027214612   11.14 11.15     ~ 14 0
58 HD 49299 a2* 06 46 56.6073872856 -20 39 07.067717244   10.22 10.20     ApSi 46 0
59 * 12 CMa a2* 06 47 01.4835271104 -21 00 55.451696472 5.27 5.89 6.08     B7II/III 152 0
60 NGC 2281 OpC 06 48 19.7 +41 02 35   6.05 5.4     ~ 182 0
61 HD 49040 * 06 48 22.1170459680 +40 57 45.089870184   8.94 8.82     B9pSr 47 0
62 HD 51088 a2* 06 54 54.0495170136 -24 43 05.167147332   8.10 8.24     ApSi 37 0
63 Cl Collinder 121 OpC 06 56 20 -24 43.8   3.02 2.6     ~ 156 0
64 NGC 2323 OpC 07 02 47.3 -08 22 07           ~ 212 0
65 HD 52965 Em* 07 02 49.8702642240 -08 18 48.648045852   9.14 9.04     B8V 42 0
66 Cl Collinder 132 OpC 07 13 55.4 -30 41 55     3.6     ~ 78 0
67 HD 56343 * 07 15 18.6617152176 -31 54 34.836209208   9.17 9.17     B9V 29 0
68 Cl Collinder 135 OpC 07 17 23.6 -36 57 23           ~ 124 0
69 HD 58260 * 07 23 19.5997521648 -36 20 24.538554852 5.87 6.61 6.73     B2/3Vp 108 0
70 BD-14 2015 * 07 36 25.7935794888 -14 29 07.676729160 9.364 9.409 9.349 9.334 9.327 B9Vn 45 0
71 NGC 2422 OpC 07 36 35.8 -14 30 15           ~ 275 0
72 BD-14 2028 * 07 36 46.4772711624 -14 24 19.864711800 10.574 10.468 10.340 10.261 10.168 A2p 34 0
73 HD 61045 ** 07 36 47.1653427840 -14 33 41.765206968   7.92 7.98     B8pSi 67 0
74 BD-14 2040 * 07 37 08.2559057328 -14 33 14.666399136 10.766 10.644 10.523 10.446 10.336 ~ 35 0
75 HD 62376 * 07 41 58.0231253880 -38 31 42.029908788   6.445 6.523     B8V 51 0
76 NGC 2451A OpC 07 42 55.4 -38 15 05           ~ 159 0
77 NGC 2451B OpC 07 44 22.6 -37 53 00           ~ 125 0
78 CD-37 3845 * 07 44 43.0030960320 -38 05 51.815903604   8.72 8.64     A0Vp:Si 35 0
79 HD 62992 a2* 07 45 01.6125220824 -38 09 30.283619580   8.00 7.87     A5/7(IV) 32 0
80 HD 63079 * 07 45 27.3624173688 -37 35 46.630622868   6.857 6.909     B9V 56 0
81 V* OX Pup a2* 07 47 05.7565479792 -39 19 51.585710340   6.171 6.322     ApSi 93 0
82 NGC 2489 58 * 07 56 05.2807112136 -30 03 27.801488268   13.04 12.75     A0 10 0
83 NGC 2489 40 * 07 56 11.9443738416 -30 02 31.586985456   12.86 12.64     ~ 13 0
84 NGC 2489 OpC 07 56 15.7 -30 03 35   8.58 7.9     ~ 83 0
85 V* V607 Car a2* 07 56 22.6795854768 -61 17 02.136961464   9.365 9.340     ApSi 54 0
86 CPD-60 944A a2* 07 56 45.1050993480 -60 48 54.285743628   8.345 8.370     B8pSi 56 0
87 CPD-60 944B Pu* 07 56 46.2620797099 -60 48 58.296559706   8.77 8.76     B8III 53 0
88 HD 65949 * 07 57 47.6703410424 -60 36 34.921501344 7.99 8.31 8.37     B8/9 108 0
89 NGC 2516 OpC 07 58 00.5 -60 46 36           ~ 793 0
90 V* V391 Car a2* 07 58 02.5012020672 -60 48 46.812060396   8.89 8.96     A0pEuCrSr 67 0
91 V* V356 Car SB* 07 58 02.9117451672 -60 36 53.230792248 7.22 7.55 7.59     B9.5IVpSi 109 0
92 V* V392 Car SB* 07 58 10.4770762032 -60 51 57.409042680   9.69 9.48     A2Vp:Sr:Cr:Eu: 80 0
93 V* V422 Car a2* 07 59 21.2942838672 -60 48 56.393118468   9.13 9.08     B8/9pSi 84 0
94 HD 66318 * 07 59 27.4731907320 -60 47 47.144978988   9.69 9.56   9.555 A2:IV:pSiSrCr 99 0
95 NGC 2546 258 * 08 11 24.0468360528 -37 27 33.616160748   10.6 11.07 11.07 10.41 ~ 12 0
96 CD-37 4355 * 08 11 40.2328652832 -37 51 20.691533412   9.95 10.027 10.04   ~ 9 0
97 CPD-37 1989 * 08 11 46.3716565752 -37 49 07.472525592   11.24 10.94     ~ 13 0
98 NGC 2546 OpC 08 12 39.8 -37 39 34   6.46 6.3     ~ 125 0
99 HD 69004 * 08 13 34.8160385328 -37 31 38.451132876   9.25 9.28     A(pSi) 21 0
100 HD 69067 a2* 08 13 46.5958798080 -37 43 27.374622852 7.72 8.13 8.22     ApSi 33 0
101 * 47 Vel a2* 08 35 52.0273953624 -50 58 10.728609996   5.651 5.782     ApSi 110 0
102 V* KR Vel a2* 08 39 59.3714205216 -53 15 39.452330772   7.183 7.200     ApEuCr(Sr) 97 0
103 V* OO Vel a2* 08 40 08.3510331168 -51 56 29.613315048   7.338 7.439     ApSi 51 0
104 HD 74196 * 08 40 17.4649643448 -53 00 55.430609904 4.97 5.47 5.61     B9/A0 144 0
105 * omi Vel Pu* 08 40 17.5993322082 -52 55 18.875623881 2.8 3.44 3.63     B3/5(V) 181 1
106 IC 2391 OpC 08 41 17.5 -53 03 00           ~ 871 0
107 V* KT Vel a2* 08 42 18.9916454899 -53 06 00.204770302 4.79 5.340 5.474     B9III(pSi) 110 0
108 HD 74560 SB* 08 42 25.3866034128 -53 06 50.343377699 3.97 4.655 4.815     B3IV 182 0
109 HD 75239 * 08 47 15.1394800152 -42 23 08.092781160   9.18 9.25     B9IV/V 28 0
110 Cl Trumpler 10 OpC 08 47 46.4 -42 31 52           ~ 203 0
111 NGC 2925 OpC 09 33 15.7 -53 24 39     8.3     ~ 80 0
112 HD 83002 a2* 09 33 36.4356963254 -53 20 39.393675800   9.00 9.07     ApSi 31 0
113 HD 87241 Be* 10 01 41.7639849792 -60 06 46.585981188   7.77 7.77     B8IIIe 53 0
114 HD 87240 * 10 01 44.0901709680 -59 51 00.176879232   9.69 9.91     ApSi 46 0
115 HD 87266 * 10 01 51.9373666872 -59 58 55.057506024   8.09 8.23     B3III/V 51 0
116 NGC 3114 OpC 10 01 55.0 -60 02 16   4.47 4.2     ~ 213 0
117 HD 304841 * 10 02 22.0499144976 -59 59 57.755460768   10.02 10.15     A 21 0
118 V* V424 Car a2* 10 02 39.8186174520 -59 57 54.678266820   9.74 9.86     B7/8 42 1
119 HD 87405 * 10 02 48.1967097432 -59 57 30.179331720   8.41 8.50     ApSi 49 0
120 HD 89856 Pu* 10 20 55.3175795040 -51 51 41.692159836   8.97 9.04     B9 31 0
121 NGC 3228 OpC 10 21 34.1 -51 45 39           ~ 98 0
122 HD 298053 * 10 21 48.2714595936 -51 50 10.085270676   10.88 10.63     A0 32 0
123 HD 92190 a2* 10 37 21.7985137248 -59 10 48.482370300 8.01 8.48 8.58     B8IV 45 0
124 V* V407 Car a2* 10 38 17.5533646560 -65 02 30.968296872   6.646 6.711     B9Vn 96 0
125 Cl VDBH 99 OpC 10 38 23.9 -59 09 28           ~ 91 0
126 V* V364 Car a2* 10 40 11.4474547680 -65 06 00.752607072 4.79 5.36 5.52     ApSi 154 0
127 HD 305451 a2* 10 42 36.3664588872 -60 02 34.715097888   10.5 10.5     B9.5Vp?SiHe-n 24 1
128 IC 2602 OpC 10 42 55.9 -64 25 22           ~ 735 0
129 * tet Car SB* 10 42 57.4019674 -64 23 40.020796 1.53 2.54 2.76 2.87 3.10 B0Vp 351 0
130 Cl Collinder 228 OpC 10 44 00 -60 05.2           ~ 211 0
131 HD 96040 * 11 03 48.8078723448 -58 34 36.736006944   9.990 9.971 9.920 9.886 B9IIIpSi 28 0
132 NGC 3532 OpC 11 05 33.9 -58 42 13           ~ 414 0
133 HD 96729 * 11 07 34.9976095632 -58 40 47.240499468   9.934 9.947 9.910 9.900 B9 32 0
134 HD 303821 * 11 08 48.1748554800 -59 03 32.018579568   10 11.7     A 15 0
135 * bet Hya a2* 11 52 54.52149 -33 54 29.2672 3.85 4.18 4.28 4.27 4.35 kB8hB8HeA0VSi 110 0
136 NAME Lower Centaurus Crux As* 12 19 -57.1           ~ 565 1
137 NAME Coma Dwarf Galaxy G 12 26 59.0 +23 54 15     14.1     ~ 482 1
138 * 17 Com a2* 12 28 54.7022406648 +25 54 46.265813136   5.208 5.236     B9VCrEu 288 0
139 * 21 Com a2* 12 31 00.5605002264 +24 34 01.797245328   5.496 5.436     A2pv 295 0
140 V* V823 Cen a2* 12 56 58.2225017496 -54 35 14.478644184   6.431 6.485     ApSiCr 77 0
141 V* V824 Cen a2* 13 10 58.4324574120 -52 34 00.832901520   5.943 6.026     ApSi 85 0
142 V* V827 Cen a2* 13 44 16.0025041176 -51 00 44.822666448   6.323 6.440     ApSiCr 115 0
143 V* V828 Cen a2* 14 03 27.4674533712 -41 25 24.032196948   5.986 6.088     ApSi 102 0
144 HD 122983 Ro* 14 06 13.7010707688 -48 23 12.684451920 9.770 9.91 9.79     B9/A0IV/V 31 0
145 NGC 5460 OpC 14 07 21.6 -48 16 48   5.85 5.6     ~ 111 0
146 HD 123183 * 14 07 25.0997912280 -48 18 42.474596076 10.082 10.24 10.07 10.25 10.02 A0 28 0
147 HD 123225 SB* 14 07 35.3007863448 -48 19 48.404569440 8.532 8.854 8.873   9.18 B9 43 0
148 * a Cen Ro* 14 23 02.2387240143 -39 30 42.544559700 3.50 4.24 4.42 4.53 4.70 B2V 289 0
149 HD 126759 * 14 28 51.9061828752 -47 59 31.496251200   6.284 6.390     ApSi 55 0
150 NGC 5662 OpC 14 34 55.5 -56 40 41   6.18 5.5     ~ 136 0
151 CPD-56 6330 * 14 35 27.7996799208 -56 36 40.989005208 10.71 10.86 10.60 10.44 10.19 ~ 23 0
152 HD 127866 * 14 35 47.6518545144 -56 37 06.436688268 8.2 8.40 8.29     B8III 36 0
153 HD 127924 Pu* 14 36 01.5321812208 -56 27 36.560415564 8.98 9.27 9.23     B7/9III/IV 41 0
154 V* IT Lup a2* 14 40 19.2710755512 -45 47 37.824571176   6.504 6.615     ApSi 68 0
155 HD 128974 * 14 41 01.3897990440 -36 08 05.492768820   5.568 5.658     B9.5III 48 0
156 * mu. Lib ** 14 49 19.05130 -14 08 56.4766 5.33 5.38 5.31     ApSrEuCr 122 0
157 HD 131120 Pu* 14 52 51.0731473122 -37 48 11.382138696 4.11 4.855 5.015     B7IIIp 134 0
158 V* HZ Lup a2* 15 06 33.1978166352 -30 55 06.533677056   5.893 5.977     ApSi 110 0
159 V* HR Lup a2* 15 08 12.1238757000 -40 35 02.155417224 5.25 5.65 5.79     B8IVSi 186 1
160 HD 136347 * 15 21 30.0957912715 -38 13 07.286608599   6.49 6.56     ApSi 75 0
161 NAME Upper Centaurus Lupus MGr 15 24 -41.9           ~ 567 1
162 V* HQ Lup a2* 15 26 06.8552484720 -39 53 20.438606148   7.38 7.37     ApSi 56 0
163 V* KU Lup a2* 15 40 24.6931023192 -44 17 18.858397380   6.900 6.974     ApSi 32 0
164 * 3 Sco Ro* 15 54 39.5296532472 -25 14 37.459966128 5.23 5.81 5.87     B8III/IV 232 0
165 V* V913 Sco Ro* 15 58 34.8665694960 -24 49 53.361727284 4.70 5.34 5.43     B5V 226 0
166 HD 143699 * 16 03 24.1895252119 -38 36 09.141541952 4.18 4.75 4.89 4.96 5.10 B5/7III/IV 154 0
167 HD 144334 ** 16 06 06.3891324384 -23 36 22.849641396 5.29 5.84 5.92     B8V 203 0
168 HD 144661 * 16 07 51.8878572504 -24 27 44.447463108 5.74 6.27 6.33     B8IV/V 167 0
169 V* V952 Sco a2* 16 10 15.9221226696 -26 54 32.879906064   6.634 6.587     ApSi 93 0
170 * nu.02 Sco ** 16 11 58.528032 -19 27 00.81612 6.06         B8/9V 131 0
171 * nu. Sco ** 16 11 59.73568 -19 27 38.5361 3.42 4.05 4.00 3.90 3.87 B2V 404 0
172 NAME Upper Sco Association As* 16 12 -23.4           ~ 1586 1
173 HD 146001 * 16 14 53.4294665736 -25 28 37.100440632 5.73 6.09 6.05     B8V 161 0
174 NAME Upper Sco-Cen As* 16 15 -24.2           ~ 1497 1
175 CPD-57 7817 * 16 18 49.6733299104 -57 54 30.326041800   9.97 9.82     B7V 24 0
176 NGC 6087 OpC 16 18 55.7 -57 53 32           ~ 198 0
177 HD 146555 a2* 16 19 59.3505102216 -57 54 28.231388424   10.24 10.26     ApSi 32 0
178 V* V933 Sco a2* 16 20 05.4927999744 -20 03 23.030685720   7.56 7.40     B8:VpSrTiSiEu 204 0
179 HD 147890 a2* 16 25 39.1394428392 -29 24 01.615881024   7.84 7.69     ApSi 85 0
180 V* V1028 Sco a2* 16 27 29.6805068520 -29 17 17.780088804   7.10 7.01     ApSi 96 0
181 NGC 6178 OpC 16 35 42.5 -45 38 11           ~ 78 0
182 HD 149257 * 16 35 45.4515816840 -45 37 16.413043908 7.67 9.46 9.18 9.38   B1Ib 54 0
183 HD 149277 SB* 16 35 48.1576287288 -45 40 43.537136484 7.77 8.41 8.41     B2VeHe 59 0
184 CD-48 11051 * 16 40 33.8980280640 -48 53 16.138367700 10.13 10.74 10.35 10.45   OB: 47 0
185 CD-48 11059 * 16 40 51.4963854480 -48 49 24.313128240   10.89 10.71     B7 15 0
186 NGC 6193 OpC 16 41 14.9 -48 46 47           ~ 169 0
187 * l Her a2* 16 47 46.4200216512 +05 14 48.291336960 5.20 5.22 5.24     A1VpSi 138 0
188 HD 322676 * 17 03 58.6902132336 -38 08 32.045586252   10.37 10.22     A0 22 0
189 V* V948 Sco a2* 17 04 15.6335213064 -38 03 06.311027016   9.47 9.54     B9IVpSiSrCrEu 46 0
190 NGC 6281 OpC 17 04 44.6 -37 57 08           ~ 156 0
191 NGC 6383 26 * 17 34 33.7746294408 -32 34 36.008049108   13.30 12.86     A2Vpe 13 0
192 HD 317857 * 17 34 34.1882020848 -32 36 08.936209656 10.68 10.59 10.30     ~ 23 0
193 V* V486 Sco Or* 17 34 37.8541369152 -32 36 18.594147276   13.196 12.651 12.642   A5IIIp 27 0
194 NGC 6383 OpC 17 34 41.6 -32 34 27           ~ 168 0
195 V* V970 Sco a2* 17 39 41.2405860216 -32 17 57.527626920   9.38 9.34     ~ 72 0
196 V* V971 Sco a2* 17 40 12.6408982440 -32 09 32.843045556   9.88 9.81     ~ 42 0
197 NGC 6405 OpC 17 40 14.5 -32 14 16           ~ 235 0
198 CD-32 13119 * 17 40 25.1293089528 -32 06 11.135934288   11.18 10.94     ~ 28 0
199 HD 162305 * 17 51 52.8802756344 -34 46 56.811887580   7.76 7.77     B8/9III/IV 50 0
200 HD 320764 ** 17 52 09.8992540872 -34 53 40.323689880   9.38 9.38 9.55   ~ 43 1
201 NGC 6475 OpC 17 53 44.1 -34 49 36           ~ 413 0
202 V* V951 Sco a2* 17 53 58.1358478008 -34 49 51.800052684   6.43 6.42     kB6hA0VHeA0pSiCr 111 0
203 HD 169842 * 18 26 22.2866497368 +06 51 25.638603336   9.33 9.14     A5VkA1pSrEuCr 49 0
204 HD 169959 ** 18 26 52.890288 +06 25 24.01428   8.78 8.62 8.50   A0III 49 0
205 HD 170054 a2* 18 27 14.6920583736 +06 31 06.964534848   8.19 8.19     B6IVpSi 69 0
206 NGC 6633 OpC 18 27 30.2 +06 38 21           ~ 423 0
207 CPD-19 6897 SB* 18 31 44.5599164880 -19 07 13.582426260 10.5 10.59 10.18     ~ 43 0
208 IC 4725 OpC 18 31 47.5 -19 07 37           ~ 239 0
209 HD 170836 Ro* 18 32 12.2960813736 -19 16 32.636206308 9.03 9.26 8.95     B8II 50 0
210 HD 170860 Ro* 18 32 27.0187530912 -19 05 55.575351276   9.76 9.63     B9IV/V 44 0
211 V* CK Oct a2* 20 13 56.3652220104 -78 52 42.269446308   10.41 9.94     ApEuSr 51 0
212 Cl Melotte 227 OpC 20 16 48 -79 02.4           ~ 18 0
213 Ass CMa OB 2 As* ~ ~           ~ 12 0
214 Ass Ori OB 1a As* ~ ~           ~ 237 0

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