2022A&A...657A.131M

Query : 2022A&A...657A.131M

2022A&A...657A.131M - Astronomy and Astrophysics, volume 657A131-131 (2022/1-1)

The Villafranca catalog of Galactic OB groups. II. From Gaia DR2 to EDR3 and ten new systems with O stars.

MAIZ APELLANIZ J., BARBA R.H., FERNANDEZ ARANDA R., PANTALEONI GONZALEZ M., CRESPO BELLIDO P., SOTA A. and ALFARO E.J.

Abstract (from CDS):


Context. This is the second paper of a series on Galactic OB groups that uses astrometric and photometric data from Gaia and spectral classifications from the Galactic O-Star Spectroscopic Survey (GOSSS) and the Library of Libraries of Massive-star high-Resolution spectra (LiLiMaRlin). The previous paper was based on the second Gaia data release (DR2). Since then, the early third Gaia data release (EDR3) has appeared with new astrometry and photometry.
Aims. The two aims of this paper are to revise the results for the sample from Paper I using Gaia EDR3 data and to expand the sample of analyzed stellar groups to 26, from Villafranca O-001 to Villafranca O-026.
Methods. We used GOSSS to select Galactic stellar groups with O stars and an updated version of the method in Paper 0 of this series, combining Gaia EDR3 G + GBP + GRP photometry, positions, proper motions, and parallaxes to assign memberships and measure distances. We present 99 spectra from GOSSS and 32 from LiLiMaRlin for stars in the analyzed groups or in their foreground.
Results. We derived distances to the 26 stellar groups with unprecedented precision and accuracy, with total (random plus systematic) uncertainties lower than 1% for distances within 1 kpc and of ∼3% around 3 kpc, which are values almost four times better than for Gaia DR2. We provide homogeneous spectral types for 110 stars and correct a number of errors in the literature, especially for objects in Villafranca O-023 (Orion nebula cluster). For each group, we discuss its membership and present possible runaway and walkaway stars. At least two of the studied groups, Villafranca O-O12 S in NGC 2467 and Villafranca O-014 NW in the North America nebula, are orphan clusters in which the most massive stars have been ejected by dynamical interactions, leaving objects with a capped mass function. The existence of such clusters has important consequences for the study of the initial mass function (IMF), the distribution of supernova explosions across the Galaxy, and the population and dynamics of isolated compact objects. We fit pre-main-sequence (PMS) isochrones to the color-magnitude diagrams (CMDs) of four clusters to derive ages of 2.0 ±0.5 Ma for Villafranca O-026 (σ Orionis cluster), 4 ±2 Ma for Villafranca O-016 (NGC 2264), 5.0 ±0.5 Ma for Villafranca O-021 (NGC 2362), and 8 ±2 Ma for Villafranca O-024 (γ Velorum cluster).

Abstract Copyright: © ESO 2022

Journal keyword(s): astrometry - catalogs - Galaxy: structure - open clusters and associations: general - stars: kinematics and dynamics - stars: early-type

VizieR on-line data: <Available at CDS (J/A+A/657/A131): tablea1.dat tablea2.dat tablea3.dat tablea4.dat>

Nomenclature: Table 1: Villafranca O-NNN (Nos 017-026) added. Paragr. 3.1.8: Villafranca O-NNN WW (Nos 014 NW, 014 SE) added.

Simbad objects: 261

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Number of rows : 261
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 NGC 104 GlC 00 24 05.359 -72 04 53.20     4.09     ~ 4158 0
2 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 12317 1
3 IC 1795 HII 02 25 43.5 +62 06 13           ~ 247 0
4 W 3 MoC 02 27 04.10 +61 52 27.1           ~ 1064 3
5 V* KM Cas Or* 02 29 30.4684170480 +61 29 44.163943476 12.21 12.285 11.229 10.990   O9.5V((f)) 53 0
6 BD+60 493 s*b 02 30 51.3556566000 +61 10 39.975724344 10.571 9.12 8.48     B0.5Iae 70 0
7 BD+60 496 Y*O 02 31 56.1710199480 +61 32 13.385154660 10.64 11.10 10.60     B1V 37 0
8 BD+60 497 Y*O 02 31 57.0901516200 +61 36 43.948697940 10.466 9.39 8.85     O6.5V((f))+O8/B0V 110 0
9 LS I +61 275 EB* 02 32 09.6299057496 +61 38 23.556279372 11.59 12.04 11.445 11.64   B1V 37 0
10 BD+60 498 Y*O 02 32 10.8542551368 +61 33 07.940208384 11.61 10.47 9.94     O9V 113 0
11 EM* MWC 50 Y*? 02 32 11.4523605192 +61 21 45.253334772 11.64 11.77 10.87     Be 45 0
12 BD+60 499 Y*O 02 32 16.7518284696 +61 33 14.996422332 10.27 10.85 10.31     O9.5V 87 0
13 BD+60 501 Y*O 02 32 36.2781863760 +61 28 25.586191812 11.062 10.02 9.56     O7V(n)((f))z 124 0
14 NAME Heart Nebula HII 02 32.7 +61 27           ~ 336 1
15 HD 15558 Y*O 02 32 42.5366901168 +61 27 21.572901360 7.82 8.37 7.87 7.34 6.94 O4.5III(f) 324 0
16 HD 15570 Y*O 02 32 49.4207394600 +61 22 42.089384892 8.40 8.80 8.11 7.41 6.86 O4If 316 0
17 IC 1805 OpC 02 32 52.1 +61 28 36           ~ 542 1
18 IC 1805 180 Y*O 02 33 09.0364338336 +61 27 46.056433644 13.39 13.58 12.93     B2.5Vnn 18 0
19 2MASS J02331163+6116585 Y*O 02 33 11.6289323256 +61 16 58.404618804 17.32 14.92 12.79     ~ 3 0
20 LS I +61 292 Y*O 02 33 11.8711858296 +61 27 28.217323728 11.82 11.80 11.24     B0.7V 27 0
21 HD 15629 Y*O 02 33 20.5873992264 +61 31 18.188762844 8.23 8.85 8.42     O4.5V((fc)) 255 0
22 2MASS J02332978+6135238 Y*O 02 33 29.7880019040 +61 35 23.672123052 14.88 13.13 11.53     G7Ib 11 0
23 LS I +61 294 Y*O 02 33 42.9965386248 +61 26 12.258403692 11.28 11.47 10.89     B1V 28 0
24 ZTF J023348.08+614203.7 LP* 02 33 48.0711304560 +61 42 03.689705628     13.601     ~ 5 0
25 2MASS J02334886+6141045 IR 02 33 48.86808 +61 41 04.5780           ~ 1 0
26 BD+60 513 Y*O 02 34 02.5297182912 +61 23 10.877763048 9.38 9.88 9.39     O7Vnz 116 0
27 LS I +61 297 Y*O 02 34 15.0110270712 +61 24 40.270765752 11.33 11.45 10.937 11.08   B1V 22 0
28 2MASS J02344503+6125106 S*? 02 34 45.0350338352 +61 25 10.668374272           S: 2 0
29 Ass Cas OB 6 As* 02 43 +61.3           ~ 128 0
30 IC 1848 OpC 02 51 19.4 +60 25 32   6.87 6.5     ~ 522 2
31 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 19090 0
32 * ups Ori SB* 05 31 55.8599595648 -07 18 05.535884975 3.30 4.36 4.63 4.75 5.01 O9.7V 426 0
33 V* HU Ori Or* 05 33 37.2510818328 -05 26 52.768724208   12.38       ~ 32 0
34 Brun 334 Or* 05 34 39.7638260448 -05 24 25.590693312 14.065 12.535 11.606   9.794 K3V+K5V 92 0
35 HD 36939 V* 05 34 55.2955987536 -05 30 22.104460800   9.00 9.01     B8V(n) 94 0
36 NAME Orion Nebula Cluster OpC 05 35.0 -05 29           ~ 2514 0
37 V* V1321 Ori Or* 05 35 04.3009445808 -05 08 12.737523192   11.94 10.538   9.117 K0III 103 0
38 HD 36981 Or* 05 35 06.1984793208 -05 12 15.917207580 7.16 7.76 7.89     B5V 101 0
39 HD 36982 Or* 05 35 09.8363878512 -05 27 53.216296776 8.00 8.58 8.46     B2V 225 0
40 * tet01 Ori A Ae* 05 35 15.8254015008 -05 23 14.334699480 5.87 6.75 6.73 6.42 6.21 B0V 508 0
41 * tet01 Ori B EB* 05 35 16.1339860056 -05 23 06.784444248 7.71 8.20 7.96     B1V 380 1
42 * 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
43 NAME Ori Trapezium OpC 05 35 16.5 -05 23 14           ~ 1708 1
44 * tet01 Ori F Y*? 05 35 16.7270624568 -05 23 25.197757584 9.928 10.075 10.122   9.652 B8 46 0
45 M 42 HII 05 35 16.8 -05 23 15           ~ 4411 0
46 * tet01 Ori D Y*O 05 35 17.2574479992 -05 23 16.570738104 6.08 6.79 6.70 6.40 6.20 B1.5Vp 340 0
47 * tet02 Ori A SB* 05 35 22.9012398264 -05 24 57.832632108 5.37 6.30 6.39 6.30 6.35 O9.5IVp 576 0
48 * iot Ori SB* 05 35 25.9861932063 -05 54 35.598684624 1.45 2.53 2.77     O9IIIvar 793 0
49 BD-05 1322 Y*O 05 35 26.1704698248 -05 48 16.634635488   9.94 9.77     A6Vn 28 0
50 * tet02 Ori B Y*O 05 35 26.4007537560 -05 25 00.793767576 5.36 6.29 6.38 6.29 11.050 B0.7V 206 0
51 M 43 HII 05 35 31 -05 16.2           ~ 201 0
52 HD 37061 Or* 05 35 31.3649044920 -05 16 02.582064192 6.44 7.09 6.83     O9.5V 376 0
53 * tet02 Ori C Or* 05 35 31.4311124640 -05 25 16.371705000   7.80 8.24     B4V 136 1
54 2MASS J05374491-0229573 Y*O 05 37 44.9166095784 -02 29 57.276996360   11.50 10.95   10.747 F7 18 1
55 NAME Ori I As* 05 38 -02.8           ~ 653 0
56 HD 294272 ** 05 38 34.80 -02 34 15.8           B9.5III+B8V 16 0
57 2MASS J05383484-0232521 Y*O 05 38 34.8485611872 -02 32 52.240234092 13.76 12.95 11.90 11.29 10.743 B9.0 15 0
58 HD 294271 Y*O 05 38 36.5498973360 -02 33 12.757741200   7.78 7.88   7.990 B5V 42 0
59 NAME sig Ori Cluster OpC 05 38 42 -02 36.0           ~ 623 0
60 * sig Ori Y*O 05 38 44.7653828520 -02 36 00.283179888 2.54 3.58 3.79 3.87 4.11 O9.5V+B0.2V(n) 855 0
61 * sig Ori D Y*O 05 38 45.6253355112 -02 35 58.894678824 5.7 6.51 6.69   6.98 B2V 67 0
62 * 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
63 HD 37525 Y*O 05 39 01.4927799048 -02 38 56.364214344   7.98 8.06   8.210 B5V 95 1
64 HD 37564 Y*O 05 39 15.0592783536 -02 31 37.638414516   8.67 8.43   8.180 A8V 48 0
65 NAME Horsehead Nebula DNe 05 40 59.0 -02 27 30           ~ 555 0
66 * mu. Col V* 05 45 59.8950238944 -32 18 23.162261796 3.84 4.90 5.18 5.30 5.57 O9.5V 523 0
67 HD 258691 * 06 30 33.3084227300 +04 41 27.532107066 9.78 10.27 9.70     O9.5V 36 0
68 NGC 2244 83 Y*O 06 31 20.5823668840 +04 50 13.424351837   11.20 10.94     B2V 15 0
69 HD 46056 Y*O 06 31 20.8608343776 +04 50 03.842554740 7.60 8.36 8.16 8.16 8.09 O8Vn 242 0
70 HD 46106 Y*O 06 31 38.3968383096 +05 01 36.396422796 7.33 8.08 7.93 7.76 7.66 O9.7III(n) 167 0
71 HD 46149 Y*O 06 31 52.5319291296 +05 01 59.178678024 7.03 7.80 7.61 7.54 7.36 O8.5V 288 0
72 HD 46150 Y*O 06 31 55.5205071744 +04 56 34.296516096 6.03 6.86 6.73 6.50 6.41 O5V((f))z 413 0
73 V* V578 Mon Y*O 06 32 00.6076651296 +04 52 40.886334120 8.01 8.72 8.55 8.09 8.28 B0V+B1V 127 0
74 NGC 2244 OpC 06 32 06.9 +04 54 19           ~ 673 1
75 HD 46223 Y*O 06 32 09.3068103600 +04 49 24.705695568 6.73 7.50 7.28 6.95 6.79 O4V((f)) 406 0
76 HD 46202 bC* 06 32 10.4706981304 +04 57 59.764912343 7.60 8.332 8.269 7.98 7.86 O9.2V 300 0
77 NAME Rosette Nebula HII 06 32 26.76 +04 47 37.1           ~ 522 1
78 HD 259481 Be* 06 32 59.3758437528 +04 56 22.492251635 9.35 9.86 9.78 9.70   B1Vnne 25 0
79 V* V641 Mon El* 06 40 28.5859725984 +09 49 04.274157468 7.257 7.98 8.10 8.147 8.165 B1.5IV+(B2V) 115 0
80 V* V684 Mon EB* 06 40 38.3663658576 +09 47 16.046270268 7.71 8.31 8.44 8.492 8.516 B2.5V 87 0
81 HD 47777 Y*O 06 40 42.2934096648 +09 39 21.310266708 6.95 7.79 7.93   7.721 B2IV 125 0
82 HD 261810 Y*O 06 40 43.2266749356 +09 46 01.720075195 8.26 8.92 9.02 9.045 9.039 B2.5Vn 70 0
83 HD 261878 Y*O 06 40 51.5561543448 +09 51 49.380647832 8.42 8.98 9.08 9.149 9.191 B6V 73 0
84 NGC 2264 OpC 06 40 53.7 +09 52 32           ~ 1876 0
85 * 15 Mon Be* 06 40 58.65963 +09 53 44.7229 3.360 4.45 4.68   4.88 O7V+B1.5/2V 823 0
86 HD 261938 Y*O 06 41 01.8776061384 +09 52 48.041278176 8.32 8.90 8.97 9.067 9.084 B3V 46 0
87 HD 261903 Y*O 06 41 02.8835159088 +09 27 23.465894652 8.65 9.03 9.10     B8Vn 39 0
88 HD 261940 Y*? 06 41 04.1121827040 +09 33 01.883923164 9.65 10.00 10.06   10.060 B8V(n) 44 0
89 HD 261936 Y*? 06 41 08.6356869768 +10 08 25.376185824   10.03 10.2     B9III 18 0
90 HD 47887 Y*O 06 41 09.5990050152 +09 27 57.538520712 6.01 6.96 7.14   7.40 B0.7V 112 0
91 HD 261969 Y*O 06 41 10.3828156324 +09 53 01.830226399 9.76 9.96 9.95 9.914 9.863 B9IV 60 0
92 HD 47961 Y*O 06 41 27.3048122400 +09 51 14.407496352 6.57 7.33 7.47   7.614 B2.5V 91 0
93 HD 48055 Em* 06 41 49.7115983832 +09 30 29.360973708 8.17 8.83 8.96   9.033 B2.5Vn 67 0
94 CD-24 5175 Y*O 07 18 41.0744988552 -25 00 11.414819052 7.689 8.58 8.77 8.756 8.867 B2V 29 0
95 NGC 2362 OpC 07 18 41.9 -24 57 08           ~ 428 0
96 * tau CMa SB* 07 18 42.4849951654 -24 57 15.700749738 3.26 4.25 4.40 4.44 4.62 O9II 439 0
97 2MASS J07184309-2457156 * 07 18 43.0980440064 -24 57 15.797988036           ~ 5 0
98 2MASS J07184354-2457128 Y*O 07 18 43.5329347872 -24 57 12.877009272 9.881 10.395 10.42 10.392 10.403 ~ 10 0
99 CPD-24 2223 Y*O 07 18 45.7675338432 -24 59 35.643082812 10.496 10.36 10.38 10.380 10.438 B5V 21 0
100 CD-24 5180 Y*O 07 18 48.5358896160 -24 56 56.011066584 7.13 8.04 8.21 8.31 8.32 ~ 23 0
101 CPD-24 2235 * 07 18 52.7882824824 -24 59 25.102802184   11.09 10.91     ~ 2 0
102 HD 57192 EB* 07 19 12.7658267256 -24 57 20.555988480 5.88 6.633 6.807     B2V 62 0
103 NGC 2467 OpC 07 52 18 -26 25.7           ~ 190 1
104 HD 64315 EB* 07 52 20.2841727949 -26 25 46.683038109 8.76 9.49 9.24 9.63 8.86 O5.5Vz+O7V 124 1
105 CPD-26 2704 * 07 52 36.5888563656 -26 22 41.870318304 10.84 11.50 11.16 11.15   O7V(n) 27 0
106 Cl Haffner 18 OpC 07 52 40.0 -26 23 28   10.09 9.3     ~ 60 1
107 WRAY 15-101 Em* 07 52 42.8886798192 -26 24 12.784401396 11.39 12.11 11.92 11.97   B0.5V(n) 29 0
108 Cl Haffner 19 OpC 07 52 45.9 -26 16 32           ~ 61 0
109 CD-26 5129 * 07 52 55.3937606256 -26 28 42.725747784 10.32 11.02 10.73 10.71 10.28 O7Vz 26 0
110 HD 64568 * 07 53 38.2051918848 -26 14 02.598056556 8.64 9.50 9.39 9.77 9.204 O3V((f*))z 116 0
111 HD 67820 * 08 07 40.7526767784 -47 15 17.587242864   7.37 7.47     B8IV 22 0
112 HD 68009 Y*O 08 08 22.6180841136 -47 40 59.335849344   8.82 8.82     B9/A0V 21 0
113 HD 68092 * 08 08 51.2357525112 -47 10 27.691989384 6.37 7.07 7.20     B3V 27 0
114 HD 68157 * 08 09 11.0775136368 -46 59 53.329219404   8.72 8.72     B9.5V 18 0
115 NAME Pozzo 1 OpC 08 09 18.7 -47 20 35           ~ 51 0
116 Ass Vel OB 2 As* 08 09 22.478 -47 21 03.46           ~ 307 0
117 * gam01 Vel Y*O 08 09 29.3175369840 -47 20 43.013412312   3.995 4.173     B2III 158 0
118 * gam02 Vel WR* 08 09 31.95013 -47 20 11.7108 0.64 1.58 1.83 1.85 2.00 WC8+O7.5III-V 951 0
119 SS 215 WR* 10 23 23.4905042448 -58 00 20.834862120   13.86 12.69 12.19 10.75 O2If*/WN5 29 0
120 Cl Westerlund 2 OpC 10 23 58.1 -57 45 49           ~ 400 0
121 WR 20c WR* 10 25 02.6119040592 -57 21 47.351428776   20.10 17.51 16.89 13.35 O2If*/WN6 17 0
122 THA 35-II-42 WR* 10 25 56.5024585224 -57 48 43.519215708   14.168 12.661 12.102   WN5ha/O3+O3Vz((f*)) 105 0
123 Ass Car OB 1 As* 10 38 -59.0           ~ 172 0
124 CPD-58 2608A * 10 43 41.2298355888 -59 35 48.162428916 10.935 10.98 10.42 10.76 9.92 O7.5Vz 26 0
125 CPD-58 2608B ** 10 43 41.23944 -59 35 53.0196 11.677 11.01 10.48 11.43 10.27 B1V 11 0
126 Gaia DR3 5350363326141053312 * 10 43 41.2588075800 -59 35 52.545435540           B0V 2 0
127 Cl Trumpler 14 27 SB* 10 43 43.8836722848 -59 33 46.270987560 10.979 11.539 11.219 11.13 10.62 B1.5V 41 0
128 Cl Trumpler 14 5 * 10 43 53.6203837896 -59 33 28.513930068 11.046 11.631 11.302 11.20 10.65 B0.2V 30 0
129 Cl Trumpler 14 3 Y*? 10 43 53.6447916168 -59 33 00.690433164 10.354 11.002 10.730   10.08 B0.2V 14 0
130 Cl* Trumpler 14 MJ 152 * 10 43 53.8533399088 -59 32 47.392150632 11.015 11.652 11.421   10.966 B1.5:V(n) 8 0
131 Cl Trumpler 14 4 * 10 43 55.2014351136 -59 33 14.826809592 10.615 11.321 11.039   10.477 B0V 40 0
132 Cl Trumpler 14 OpC 10 43 56.0 -59 33 07   5.70 5.5     ~ 547 0
133 HD 93129B Y*? 10 43 57.6453994104 -59 32 53.765064780   10.40 8.84     O3.5V((f)) 78 0
134 Cl Trumpler 16 126 Y*? 10 43 59.8535638152 -59 35 24.375058260 10.848 11.354 10.920 10.73 10.13 B0.7V 28 1
135 HD 93161A SB* 10 44 08.8380609288 -59 34 34.509718560 7.33 8.619 8.581 8.61   O7.5V+O9V 52 1
136 Cl Trumpler 16 245 EB* 10 44 13.8080370336 -59 42 57.010898196 12.290 12.832 12.333   11.137 B0V+B1V: 28 0
137 CPD-59 2598 * 10 44 40.3145381832 -59 41 48.828140520 10.455 11.045 10.753 10.72 10.271 B0V 40 0
138 V* V572 Car SB* 10 44 47.3048862456 -59 43 53.277923784 8.17 8.96 8.81 9.45   O7V+O9.5V+B0.2IV 182 0
139 CPD-59 2616 SB* 10 45 00.2427057888 -59 43 34.386860748 11.428 11.873 11.587   11.060 B2V 28 0
140 Cl Trumpler 16 OpC 10 45 01.9 -59 42 00           ~ 510 0
141 NGC 3372 HII 10 45 02.23 -59 41 59.8           ~ 1071 2
142 NAME eta Car Cluster Cl* 10 45 03.0 -59 41 04           ~ 30 0
143 * eta Car s*b 10 45 03.545808 -59 41 03.95124 6.37 7.03 6.48 6.123 4.41 LBV 2543 0
144 CPD-59 2626 * 10 45 05.8006619760 -59 45 19.624746096 9.792 10.389 9.995 10.03 9.228 O7.5V(n)z 67 0
145 CPD-59 2624 SB* 10 45 05.8358470968 -59 43 07.684616964 9.324 10.018 9.740   9.221 O9.7IV 64 0
146 HD 303308 ** 10 45 05.9147911152 -59 40 05.925360036 7.45 8.30 8.17 7.92 7.75 O4.5V((fc)) 314 0
147 CPD-59 2627 * 10 45 06.7193609928 -59 41 56.560947828 9.606 10.343 10.116   9.685 O9.5V 59 0
148 CPD-59 2628 SB* 10 45 08.2244134080 -59 40 49.413975060 8.791 9.571 9.460 9.87 9.219 O9.5V(n)+B0.5V(n) 88 0
149 CPD-59 2629 * 10 45 08.2352224872 -59 46 06.976659612 10.780 11.336 10.848   9.971 O8.5Vp 78 0
150 HD 93343 * 10 45 12.2210285688 -59 45 00.441008892 9.01 9.76 9.558 9.17 8.76 O8Vz 93 1
151 V* V731 Car SB* 10 45 12.7214663496 -59 44 46.149112428 8.739 9.472 9.229 9.65 8.699 O8V(n)+O9.5V 98 0
152 CPD-59 2636 ** 10 45 12.8686809888 -59 44 19.205057544 8.913 9.559 9.218   8.535 O8V+O8V 79 1
153 CPD-59 2640 * 10 45 16.5024476544 -59 39 56.677551264 10.464 11.154 11.005 11.05 10.66 B1.5V(n) 24 0
154 CD-59 3310 SB* 10 45 16.5181708560 -59 43 37.050828744 8.842 9.542 9.219 9.65 8.585 O6V((fc)) 97 0
155 CD-59 3312 * 10 45 20.5691164488 -59 42 51.240399480 9.420 10.203 10.032 10.12 9.632 O9V 55 0
156 Cl* Trumpler 14 Y 196 * 10 45 22.6516128072 -59 42 59.542522308 13.957 14.189 13.777   13.025 O8V 12 0
157 [W76b] BBII 31 EB* 10 58 23.8826842594 -61 13 46.035057377 13.1 13.592 12.673 12.663   O6.5IV((f)) 9 0
158 [DBS2003] 57 OpC 10 58 44 -61 10.7           ~ 10 0
159 MR 32 WR* 10 58 45.4633977552 -61 10 42.955415616   11.56 11.04 10.45   O5Ifp 34 0
160 GUM 35 HII 10 58 50.9 -61 06 38           ~ 14 0
161 HD 308104 Be* 10 58 59.3174826168 -61 55 36.403604004 10.48 11.22 11.03 11.06   OB+e 27 0
162 NGC 3603 OpC 11 14 57.9 -61 14 32           ~ 1136 1
163 NAME Sher 25 star * 11 15 07.6447245696 -61 15 17.611428348   13.63 12.27     B1.5Iab 82 1
164 NGC 5139 GlC 13 26 47.28 -47 28 46.1           ~ 3677 0
165 NAME Car-Sgr Arm PoG 15 00 -40.0           ~ 581 1
166 * tau Sco * 16 35 52.9528530 -28 12 57.661515 1.55 2.56 2.81 2.93 3.18 B0V 959 0
167 HD 150041 * 16 40 44.5831489080 -48 45 22.209141924 6.39 7.16 7.07 8.05   B0II 83 0
168 NGC 6193 OpC 16 41 14.9 -48 46 47           ~ 169 0
169 CD-48 11069 * 16 41 22.0940750424 -48 44 56.992596576 7.86 10.07 9.71 9.92   B0IV 31 0
170 CD-48 11071 SB* 16 41 25.8575675328 -48 45 14.265224424   8.57 8.44     B0V 30 0
171 HD 152076 Y*O 16 53 07.3002035928 -41 43 45.479256528 7.98 9.10 8.90 9.36   B0III 57 0
172 NAME Sco OB 1 As* 16 53.5 -41 57           ~ 222 0
173 V* V945 Sco bC* 16 53 54.5203569984 -41 52 14.960561412 9.090 9.745 9.575 9.618 9.260 B1V 45 0
174 HD 152219 SB* 16 53 55.6078109256 -41 52 51.496403268 6.950 7.705 7.569   7.267 O9.5III(n) 114 0
175 V* V1293 Sco SB* 16 53 57.5918059848 -41 38 41.669125044 9.39 10.3 10.2     B1.5:V 26 0
176 HD 152235 s*b 16 53 58.8528412848 -41 59 39.577848180 6.47 6.92 6.38 5.84 5.42 B0.5Ia 205 0
177 HD 152218 Y*O 16 53 59.9905195488 -41 42 52.817214240 7.02 7.78 7.570   7.243 O9IV+B0:V: 160 0
178 HD 152234 s*b 16 54 01.8373785611 -41 48 22.987399147 4.92 5.64 5.45     B0.5Ia 201 0
179 Cl* NGC 6231 MG 175 Y*O 16 54 02.7249503424 -41 50 28.635419580 12.053 12.287 12.048   11.652 B5:V 6 0
180 HD 152233 SB* 16 54 03.5909222280 -41 47 29.841281484 5.93 6.72 6.59     O6II(f) 202 0
181 CD-41 11048 Y*O 16 54 06.7112222064 -41 50 07.105056468 8.903 9.541 9.421   9.161 B1V 40 0
182 CD-41 11027B Y*? 16 54 06.8315169048 -41 51 01.370381580 9.412 10.049 9.898   9.600 B1.5V 12 0
183 CD-41 11032 SB* 16 54 06.9496123464 -41 49 23.360333088 8.93 9.60 9.512 10.81 9.256 B0.5V 42 0
184 HD 152248 Y*O 16 54 10.0618206816 -41 49 30.139291596 5.56 6.15 6.088     O7Iabf+O7Ib(f) 270 0
185 CD-41 11037 SB* 16 54 13.2253067352 -41 50 32.518100184 7.21 8.08 7.90     O9IV 78 0
186 NGC 6231 OpC 16 54 14.4 -41 48 53           ~ 562 0
187 V* V964 Sco bC* 16 54 18.3200772432 -41 51 35.651104416 9.126 9.776 9.603 9.61 9.290 B0.5V 63 0
188 HD 152270 WR* 16 54 19.6991292072 -41 49 11.531710092 6.26 6.80 6.597 6.72 6.39 WC7+O5-8 315 0
189 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 108 0
190 NGC 6231 108 Y*? 16 54 23.4504384648 -41 52 51.219013980 11.324 11.715 11.435   10.983 B2V 26 0
191 HD 326331 SB* 16 54 25.9691286216 -41 49 55.768191852 6.886 7.678 7.497   7.143 O8IVn((f)) 87 0
192 HD 152314 ** 16 54 32.0048577720 -41 48 18.848961036 7.256 7.974 7.749 9.01 7.446 O9IV 113 0
193 V* V920 Sco bC* 16 54 43.1657949576 -41 49 35.456774916 9.153 9.795 9.601 9.95 9.256 B1V 67 0
194 Cl Pismis 24 OpC 17 24 43.0 -34 12 23           ~ 130 0
195 [N78] 49 Y*O 17 25 34.232280 -34 23 11.74812 14.34 13.663 11.872 11.357   O5.5IV(f) 19 0
196 CD-24 13776 * 18 02 26.4314124960 -24 49 15.182354100   11.33 9.90     ~ 3 0
197 HD 164536 SB* 18 02 38.6215585296 -24 15 19.374907140 6.46 7.37 7.40 8.26   O7.5V(n)z 67 0
198 NGC 6523 Cl* 18 03.2 -24 23           ~ 187 1
199 M 8 OpC 18 03 37 -24 23.2           ~ 644 1
200 NAME Her 36SE Y*O 18 03 40.3201232304 -24 22 42.857540472 10.26 11.022 10.372 10.267   O8V+ 210 0
201 NAME Hourglass Nebula ISM 18 03 41.1 -24 22 37           ~ 79 2
202 CD-24 13810 Y*O 18 03 45.0958464864 -24 22 05.325003732 9.67 10.180 10.054 10.169 9.54 B1.5V(n) 33 0
203 * 9 Sgr Y*O 18 03 52.4450051016 -24 21 38.632254012 5.08 5.97 5.97 5.72 5.70 O4V((f))z 563 0
204 HD 164816 Be* 18 03 56.8425865728 -24 18 45.118050552 6.17 7.006 6.986 8.08 6.989 O9.5V+B0V 162 0
205 HD 164906 Be* 18 04 25.8330927672 -24 23 08.363828580 6.78 7.61 7.381 7.11 6.91 B0Ve 133 0
206 HD 315031 Y*O 18 04 28.0254107904 -24 21 42.788444328 7.68 9.170 9.090 9.16   B0.5IV/V+B1V 63 0
207 NGC 6530 OpC 18 04 31 -24 21.5           ~ 443 0
208 HD 165052 SB* 18 05 10.5506592816 -24 23 54.847798080 6.16 6.98 6.87 7.77   O6.5V((f))z 282 1
209 HD 165246 SB* 18 06 04.6792554840 -24 11 43.890335448 6.90 7.70 7.60 8.77   O8V(n) 93 0
210 NGC 6611 583 * 18 18 29.8852537056 -13 36 24.835940532   12.40 12.30     B9III 12 0
211 BD-13 4921 Y*O 18 18 29.9553677376 -13 49 57.614440296 9.81 10.41 9.91     B0.7V 58 0
212 RCW 165 HII 18 18 30 -13 42.5           ~ 6 0
213 NGC 6611 161 Y*O 18 18 30.9568964448 -13 43 08.219371944 12.13 12.456 11.215 11.01 9.376 O8IV 38 0
214 LS IV -13 14 Y*O 18 18 32.2227699960 -13 48 48.055623228 11.343 11.024 10.296 10.38 9.430 O9V 56 0
215 BD-13 4923 Y*O 18 18 32.7310836576 -13 45 11.867150808 11.184 10.85 10.08 10.04 8.529 O4V((f+))+O7.5V 60 0
216 HD 168075 Y*O 18 18 36.0418343184 -13 47 36.449731536 8.62 9.22 8.77 9.45   O7V(n)((f))z 149 0
217 HD 168076 Y*O 18 18 36.4205083536 -13 48 02.420915796 8.12 8.72 8.25 7.62 7.21 O4III(f) 209 0
218 NGC 6611 222 Y*O 18 18 37.4984975040 -13 43 39.417078468 14.971 14.487 12.968   10.692 O7V((f))z 35 0
219 NGC 6611 228 Y*O 18 18 38.1383029656 -13 44 25.457011836 14.931 14.35 13.42   11.843 B1.5Vp 22 0
220 BD-13 4927 Y*O 18 18 40.0938541704 -13 45 18.603231696 10.12 10.14 9.48 9.71   O7II(f) 82 0
221 2MASS J18184096-1345296 Y*O 18 18 40.9652335752 -13 45 29.644481772 12.01 11.85 11.05     B0.5V 32 0
222 BD-13 4928 Be* 18 18 42.7761777816 -13 46 50.969988732 10.05 10.604 10.044 10.23 9.345 O9.7IVnn 72 0
223 M 16 OpC 18 18 45.1 -13 47 31           ~ 1084 1
224 BD-13 4929 Y*O 18 18 45.8504419992 -13 46 30.898082136 10.05 10.509 10.23 10.02 8.830 O7V+B0.5V+B0.5V: 70 0
225 W 37 Rad 18 18 50.1 -13 46 44           ~ 26 1
226 NGC 6611 349 Y*? 18 18 50.5730358144 -13 47 33.950690700   13.01 11.61     G5III 18 0
227 BD-13 4930 Y*O 18 18 52.6749052848 -13 49 42.634556148 9.04 9.71 9.45   8.968 O9.7V 116 0
228 HD 168137 Y*O 18 18 56.1894798360 -13 48 31.092549588 8.72 9.36 8.94 9.55   O8Vz 131 0
229 V* QR Ser SB* 18 18 58.6907022768 -13 59 28.456622916 7.92 8.55 8.28 9.07   O9.5III+B3-5V/III 91 0
230 SH 2-49 HII 18 19.0 -13 52           ~ 33 1
231 NGC 6618 258 Y*O 18 20 22.6995127512 -16 08 34.169829720 15.03 14.99 13.69     O9.5V 40 0
232 NGC 6618 326 Y*O 18 20 25.8639501480 -16 08 32.406597600 16.39 15.87 14.20     O7:V(n) 39 0
233 2MASS J18202742-1613309 Y*O 18 20 27.4206604920 -16 13 30.969103332   12.45 11.28 10.6   O6.5V((f))z 32 0
234 BD-16 4818 Y*O 18 20 35.3856109704 -16 10 48.509924232 10.62 10.67 10.03 10.02   O8.5V 51 0
235 NGC 6618 OpC 18 20 47 -16 10.3           ~ 1700 0
236 Cl Collinder 419 OpC 20 18 07.3 +40 44 03           ~ 53 0
237 HD 228845 * 20 18 27.4357247976 +40 56 33.015476076   9.397 9.235     B1.5V(n) 9 0
238 HD 195965 * 20 32 25.5891987312 +48 12 59.317612308 6.03 6.899 6.974     B0.2Vn 119 0
239 Cl Bica 1 OpC 20 33 10 +41 13.1           ~ 12 0
240 Ass Cyg OB 2 As* 20 33.2 +41 19           ~ 1023 0
241 GSC 03157-00872 * 20 33 13.6906302984 +41 13 05.770090668 15.27 14.73 12.92     O8V 36 0
242 Cl Bica 2 OpC 20 33 15 +41 18.7           ~ 22 0
243 Schulte 23 * 20 33 15.7083033168 +41 20 17.174193540 14.21 14.07 12.61     O9V 41 0
244 GSC 03161-01385 * 20 33 21.0165110136 +41 17 40.120725840 14.57 14.24 12.70     O9V 33 0
245 2MASS J20350798+4649321 * 20 35 07.9889481720 +46 49 32.096423028 14.829 14.623 13.246 12.307   O8V 3 0
246 LS III +46 11 s*b 20 35 12.6369328512 +46 51 12.108461292 12.46 12.295 10.926 10.005   O3.5If*+O3.5If* 35 0
247 2MASS J20351402+4650549 * 20 35 14.0422154544 +46 50 54.750456384           B4V 4 0
248 Cl Berkeley 90 OpC 20 35 15.5 +46 50 30           ~ 36 0
249 IRAS 20342+4645 LP* 20 35 52.2883485620 +46 55 29.026044968           ~ 7 0
250 IC 5070 HII 20 51.0 +44 22           ~ 218 1
251 2MASS J20522503+4437562 * 20 52 25.0402757419 +44 37 56.245784635           ~ 4 0
252 * 57 Cyg SB* 20 53 14.7587928897 +44 23 14.147866955 4.05 4.63 4.77 4.84 4.97 B5V 197 0
253 2MASS J20531694+4424298 * 20 53 16.9521440899 +44 24 29.776515404           ~ 4 0
254 TYC 3179-756-1 Y*O 20 54 34.7221654200 +44 02 42.509309460   12.19 11.14     ~ 5 0
255 HD 199579 Y*O 20 56 34.7779063080 +44 55 29.000891928 5.16 6.01 5.96     O6.5V((f))z 375 0
256 TYC 3179-1209-1 * 20 56 37.0000781112 +44 19 48.488897640   10.14 9.97     A0IIIn 5 0
257 NAME Gulf of Mexico DNe 20 56.8 +43 52           ~ 53 0
258 NGC 7000 Cl* 20 58 47 +44 19.8           ~ 427 0
259 HD 201795 * 21 10 38.5495121016 +38 57 40.324573944 6.61 7.50 7.53     B0.7V 44 0
260 NGC 7538 OpC 23 13 37 +61 30.0           ~ 920 1
261 NAME Vela Star Cloud ClG ~ ~           ~ 26 0

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