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


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

2022A&A...657A.131M - Astronomy and Astrophysics, volume 657A, 131-131 (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.

Status at CDS : Tables of objects will be appraised for possible ingestion in SIMBAD.

Simbad objects: 222

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Number of rows : 222
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 NGC 104 GlC 00 24 05.359 -72 04 53.20   5.78 4.09     ~ 3781 0
2 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 10530 1
3 IC 1795 HII 02 25 43.5 +62 06 13           ~ 236 0
4 W 3 MoC 02 27 04.10 +61 52 27.1           ~ 1013 3
5 V* KM Cas Or* 02 29 30.4684170480 +61 29 44.163943476 12.21 12.27 11.219     O9.5V((f)) 45 0
6 BD+60 493 s*b 02 30 51.3556566000 +61 10 39.975724344 10.571 9.12 8.48     B0.5Iae 67 0
7 BD+60 496 Y*O 02 31 56.1710199480 +61 32 13.385154660 10.64 11.10 10.60     B1V 33 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 103 0
9 BD+60 498 Y*O 02 32 10.8542551368 +61 33 07.940208384 11.61 10.47 9.94     O9.7II-III 97 0
10 BD+60 499 Y*O 02 32 16.7518284696 +61 33 14.996422332 10.27 10.85 10.31     O9.5V 71 0
11 BD+60 501 Y*O 02 32 36.2781863760 +61 28 25.586191812 11.062 10.02 9.56     O7V(n)((f))z 115 0
12 NAME Heart Nebula HII 02 32.7 +61 27           ~ 308 1
13 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) 309 0
14 HD 15570 Em* 02 32 49.4207394600 +61 22 42.089384892 8.40 8.80 8.11 7.41 6.86 O4If 298 0
15 IC 1805 OpC 02 32 50 +61 28.3   7.03 6.5     ~ 507 2
16 2MASS J02330903+6127460 Y*O 02 33 09.0364338336 +61 27 46.056433644 13.39 13.58 12.93     B1V 15 0
17 2MASS J02331163+6116585 Y*O 02 33 11.6289323256 +61 16 58.404618804 17.32 14.92 12.79     ~ 3 0
18 HD 15629 Y*O 02 33 20.5873992264 +61 31 18.188762844 8.23 8.85 8.42     O4.5V((fc)) 234 0
19 2MASS J02332978+6135238 Y*O 02 33 29.7880019040 +61 35 23.672123052 14.88 13.13 11.53     G7Ib 8 0
20 LS I +61 294 Y*O 02 33 42.9965386248 +61 26 12.258403692 11.28 11.47 10.89     B1V 23 0
21 2MASS J02334807+6142036 LP* 02 33 48.0711304560 +61 42 03.689705628     13.601     ~ 2 0
22 2MASS J02334886+6141045 IR 02 33 48.86808 +61 41 04.5780           ~ 1 0
23 BD+60 513 Y*O 02 34 02.5297182912 +61 23 10.877763048 9.38 9.88 9.39     O7Vnz 105 0
24 LS I +61 297 Y*O 02 34 15.0110270712 +61 24 40.270765752 11.33 11.45 10.937 11.08   B1V 18 0
25 2MASS J02344503+6125106 IR 02 34 45.03144 +61 25 10.6356           ~ 1 0
26 Ass Cas OB 6 As* 02 43 +61.3           ~ 121 0
27 IC 1848 OpC 02 51 25 +60 25.1   6.87 6.5     ~ 478 2
28 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 16509 1
29 * ups Ori SB* 05 31 55.8601879 -07 18 05.537157 3.30 4.36 4.63 4.75 5.01 O9.7V 399 0
30 V* HU Ori Or* 05 33 37.2510818328 -05 26 52.768724208   12.38       ~ 21 0
31 Brun 334 Y*O 05 34 39.7638260448 -05 24 25.590693312 14.065 12.535 11.606   9.794 K3V+K5V 81 0
32 HD 36939 V* 05 34 55.2955987536 -05 30 22.104460800   9.00 9.01     B7/8II 82 0
33 NAME Orion Nebula Cluster OpC 05 35.0 -05 29           ~ 2207 1
34 V* V1321 Ori Or* 05 35 04.3009445808 -05 08 12.737523192   11.94 10.538   9.117 K0III 99 0
35 HD 36981 * 05 35 06.1984793208 -05 12 15.917207580 7.16 7.76 7.89     B7III/IV 89 0
36 HD 36982 Or* 05 35 09.8363878512 -05 27 53.216296776 8.00 8.58 8.46     B1.5Vp 203 0
37 * tet01 Ori A Ae* 05 35 15.8254015008 -05 23 14.334699480 5.87 6.75 6.73 6.42 6.21 B0V 476 1
38 * tet01 Ori B EB* 05 35 16.1339860056 -05 23 06.784444248 7.71 8.20 7.96     B1V 361 2
39 * 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
40 NAME Ori Trapezium OpC 05 35 16.5 -05 23 14           ~ 1568 1
41 * tet01 Ori F Em* 05 35 16.7270624568 -05 23 25.197757584 9.928 10.075 10.122   9.652 B8 42 0
42 M 42 OpC 05 35 17 -05 23.4           ~ 3970 0
43 * 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 320 0
44 * tet02 Ori A SB* 05 35 22.9012398264 -05 24 57.832632108 5.37 6.30 6.39 6.30 6.35 O9.5IVp 530 0
45 * iot Ori SB* 05 35 25.9819073 -05 54 35.643537 1.45 2.53 2.77     O9IIIvar 755 0
46 BD-05 1322 Y*O 05 35 26.1704698248 -05 48 16.634635488   9.94 9.77     A6Vn 24 0
47 * 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 191 0
48 M 43 HII 05 35 31 -05 16.2           ~ 183 0
49 HD 37061 Or* 05 35 31.3649044920 -05 16 02.582064192 6.44 7.09 6.83     O9.5V 348 0
50 * tet02 Ori C Or* 05 35 31.4311124640 -05 25 16.371705000   7.80 8.24     B4V 127 1
51 2MASS J05374491-0229573 Y*O 05 37 44.9166095784 -02 29 57.276996360   11.50 10.95   10.747 F7 14 1
52 NAME Ori I As* 05 38 -02.8           ~ 592 0
53 HD 294272 ** 05 38 34.80 -02 34 15.8           B9.5III+B8V 16 0
54 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 12 0
55 HD 294271 Y*O 05 38 36.5498973360 -02 33 12.757741200   7.78 7.88   7.990 B5V 32 0
56 NAME Garrison 1 OpC 05 38 42 -02 36.0           ~ 537 0
57 * 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) 779 0
58 * sig Ori D Y*O 05 38 45.6253355112 -02 35 58.894678824 5.7 6.51 6.69   6.98 B2V 56 0
59 * 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 441 0
60 HD 37525 Y*O 05 39 01.4927799048 -02 38 56.364214344   7.98 8.06   8.210 B5V 76 1
61 HD 37564 Y*O 05 39 15.0592783536 -02 31 37.638414516   8.67 8.43   8.180 A8V 37 0
62 NAME Horsehead Nebula DNe 05 40 59.0 -02 27 30           ~ 492 0
63 * mu. Col V* 05 45 59.8950238944 -32 18 23.162261796 3.84 4.90 5.18 5.30 5.57 O9.5V 481 0
64 HD 258691 * 06 30 33.3084227300 +04 41 27.532107066 9.78 10.27 9.70     O9V 31 0
65 HD 46056 Em* 06 31 20.8608343776 +04 50 03.842554740 7.60 8.36 8.16 8.16 8.09 O8Vn 218 0
66 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) 148 0
67 HD 46149 SB* 06 31 52.5319291296 +05 01 59.178678024 7.03 7.80 7.61 7.54 7.36 O8.5V 268 0
68 HD 46150 Em* 06 31 55.5205071744 +04 56 34.296516096 6.03 6.86 6.73 6.50 6.41 O5V((f))z 385 0
69 V* V578 Mon EB* 06 32 00.6076651296 +04 52 40.886334120 8.01 8.72 8.55 8.09 8.28 B0V+B1V 107 0
70 HD 46223 Y*O 06 32 09.3068103600 +04 49 24.705695568 6.73 7.50 7.28 6.95 6.79 O4V((f)) 369 0
71 HD 46202 ** 06 32 10.4728 +04 57 59.818 7.60 8.36 8.19 7.98 7.86 O9.2V 270 0
72 NGC 2244 OpC 06 32 11 +04 54.8           ~ 608 1
73 NAME Rosette Nebula HII 06 32 26.76 +04 47 37.1           ~ 479 1
74 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) 101 0
75 V* V684 Mon EB* 06 40 38.3663658576 +09 47 16.046270268 7.71 8.31 8.44 8.492 8.516 B4 76 0
76 NGC 2264 OpC 06 40 52 +09 52.6           ~ 1730 0
77 * 15 Mon Be* 06 40 58.65963 +09 53 44.7229 3.360 4.45 4.68   4.88 O7V+B1.5/2V 781 0
78 HD 261903 Y*O 06 41 02.8835159088 +09 27 23.465894652 8.65 9.03 9.10     B8Vn 33 0
79 NGC 2362 OpC 07 18 41 -24 57.2           ~ 396 0
80 CD-24 5175 Y*O 07 18 41.0744988552 -25 00 11.414819052 7.689 8.58 8.77 8.756 8.867 B2V 26 0
81 * tau CMa SB* 07 18 42.4864191 -24 57 15.741299 3.26 4.25 4.40 4.44 4.62 O9II 412 0
82 2MASS J07184309-2457156 * 07 18 43.0980440064 -24 57 15.797988036           ~ 5 0
83 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
84 CPD-24 2223 Y*O 07 18 45.7675338432 -24 59 35.643082812 10.496 10.36 10.38 10.380 10.438 B5V 19 0
85 CD-24 5180 Y*O 07 18 48.5358896160 -24 56 56.011066584 7.13 8.04 8.21 8.31 8.32 ~ 20 0
86 CPD-24 2235 * 07 18 52.7882824824 -24 59 25.102802184   11.09 10.91     ~ 2 0
87 V* MX CMa EB* 07 19 12.7658267256 -24 57 20.555988480 5.88 6.633 6.807     B2V 54 1
88 NGC 2467 OpC 07 52 18 -26 25.7           ~ 183 1
89 HD 64315 Em* 07 52 20.2841727949 -26 25 46.683038109 8.76 9.49 9.24 9.63 8.86 O5.5Vz+O7V 113 1
90 CPD-26 2704 * 07 52 36.5888563656 -26 22 41.870318304 10.84 11.50 11.16 11.15   O7V(n) 25 0
91 Cl Haffner 18 OpC 07 52 40 -26 23.2   10.09 9.3     ~ 52 1
92 WRAY 15-101 Em* 07 52 42.8886798192 -26 24 12.784401396 11.39 12.11 11.92 11.97   OB: 27 0
93 Cl Haffner 19 OpC 07 52 46 -26 16.4           ~ 56 0
94 CD-26 5129 * 07 52 55.3937606256 -26 28 42.725747784 10.32 11.02 10.73 10.71 10.28 B0 24 0
95 HD 64568 * 07 53 38.2051918848 -26 14 02.598056556 8.64 9.50 9.39 9.77 9.204 O3V((f*))z 105 0
96 HD 67820 * 08 07 40.7526767784 -47 15 17.587242864   7.37 7.47     B8IV 18 0
97 HD 68009 Y*O 08 08 22.6180841136 -47 40 59.335849344   8.82 8.82     B9/A0V 14 0
98 HD 68092 * 08 08 51.2357525112 -47 10 27.691989384 6.37 7.07 7.20     B3V 21 0
99 HD 68157 * 08 09 11.0775136368 -46 59 53.329219404   8.72 8.72     B9.5V 16 0
100 Ass Vel OB 2 As* 08 09 22.478 -47 21 03.46           ~ 257 0
101 * gam01 Vel SB* 08 09 29.3175369840 -47 20 43.013412312   3.995 4.173     B2III 149 0
102 NAME gam Vel Subcluster OpC 08 09 30 -47 20.1           ~ 26 0
103 * 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 878 0
104 SS 215 Em* 10 23 23.4905042448 -58 00 20.834862120   13.86 12.69 12.19 10.75 O2If*/WN5 20 0
105 Cl Westerlund 2 OpC 10 23 58.1 -57 45 49           ~ 329 0
106 WR 20c WR* 10 25 02.6119040592 -57 21 47.351428776   20.10 17.51 16.89 13.35 O2If*/WN6 14 0
107 WR 21a WR* 10 25 56.5024585224 -57 48 43.519215708     12.67     O2If*/WN5 89 0
108 Ass Car OB 1 As* 10 38 -59.0           ~ 156 0
109 CPD-58 2608A * 10 43 41.2298355888 -59 35 48.162428916 10.935 10.98 10.42 10.76 9.92 O7.5Vz 21 0
110 CPD-58 2608B ** 10 43 41.23944 -59 35 53.0196 11.677 11.01 10.48 11.43 10.27 B1V 8 0
111 Cl Trumpler 14 5 * 10 43 53.6203837896 -59 33 28.513930068 11.046 11.631 11.302 11.20 10.65 O9V 25 0
112 Cl Trumpler 14 OpC 10 43 57 -59 33.2   5.70 5.5     ~ 488 0
113 HD 93129B * 10 43 57.6453994104 -59 32 53.765064780   10.40 8.84     O3.5V((f)) 67 0
114 Cl Trumpler 16 126 * 10 43 59.8535638152 -59 35 24.375058260 10.848 11.354 10.920 10.73 10.13 B1V 21 1
115 HD 93161A SB* 10 44 08.8380609288 -59 34 34.509718560 7.33 8.619 8.581 8.61   O7.5V+O9V 39 1
116 CPD-59 2598 * 10 44 40.3145381832 -59 41 48.828140520 10.455 11.045 10.753 10.72 10.271 B0V 35 0
117 V* V572 Car EB* 10 44 47.3048862456 -59 43 53.277923784 8.17 8.96 8.81 9.45   O7.5V(n)z+B0V(n) 164 1
118 CPD-59 2616 SB* 10 45 00.2427057888 -59 43 34.386860748 11.428 11.873 11.587   11.060 B2V 24 0
119 Cl Trumpler 16 OpC 10 45 01 -59 42.0   5.35 5.0     ~ 468 0
120 NGC 3372 HII 10 45 02.23 -59 41 59.8           ~ 975 2
121 * eta Car Em* 10 45 03.5377808928 -59 41 04.051599720 6.37 7.03 6.48 4.90 4.41 OBepec 2363 0
122 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 59 0
123 CPD-59 2624 SB* 10 45 05.8358470968 -59 43 07.684616964 9.324 10.018 9.740   9.221 O9.7IV 56 0
124 HD 303308 ** 10 45 05.9147911152 -59 40 05.925360036 7.45 8.30 8.17 7.92 7.75 O4.5V((fc)) 290 0
125 CPD-59 2627 * 10 45 06.7193609928 -59 41 56.560947828 9.606 10.343 10.116   9.685 O9.5V 51 0
126 CPD-59 2628 EB* 10 45 08.2244134080 -59 40 49.413975060 8.791 9.571 9.460 9.87 9.219 O9.5V(n)+B0.5V(n) 76 0
127 CPD-59 2629 * 10 45 08.2352224872 -59 46 06.976659612 10.780 11.336 10.848   9.971 O8.5Vp 64 0
128 HD 93343 * 10 45 12.2210285688 -59 45 00.441008892 9.01 9.76 9.558 9.17 8.76 O8Vz 81 0
129 V* V731 Car EB* 10 45 12.7214663496 -59 44 46.149112428 8.739 9.472 9.229 9.65 8.699 O8V(n)+O9.5V 87 0
130 CPD-59 2636 SB* 10 45 12.8686809888 -59 44 19.205057544 8.913 9.559 9.218   8.535 O8V+O8V 71 0
131 CPD-59 2640 * 10 45 16.5024476544 -59 39 56.677551264 10.464 11.154 11.005 11.05 10.66 OB: 19 0
132 CD-59 3310 SB* 10 45 16.5181708560 -59 43 37.050828744 8.842 9.542 9.219 9.65 8.585 O6V((fc)) 87 0
133 CD-59 3312 * 10 45 20.5691164488 -59 42 51.240399480 9.420 10.203 10.032 10.12 9.632 O9V 47 0
134 Cl* Trumpler 14 Y 196 * 10 45 22.6516128072 -59 42 59.542522308 13.957 14.189 13.777   13.025 O8V 7 0
135 ALS 18552 * 10 58 23 -61 13.7 13.1 13.51 12.76     O5+ 5 0
136 MR 32 WR* 10 58 45.4633977552 -61 10 42.955415616   11.56 11.04 10.45   O5Ifp 30 0
137 GUM 35 HII 10 58 50.9 -61 06 38           ~ 14 0
138 HD 308104 Be* 10 58 59.3174826168 -61 55 36.403604004 10.48 11.22 11.03 11.06   OB+e 24 0
139 NAME Sher 25 star * 11 15 07.6447245696 -61 15 17.611428348   13.63 12.27     B1.5Iab 78 1
140 NGC 3603 OpC 11 15 11 -61 15.5           ~ 1032 1
141 NGC 5139 GlC 13 26 47.28 -47 28 46.1           ~ 3299 0
142 NAME Car-Sgr Arm PoG 15 00 -40.0           ~ 483 1
143 * tau Sco * 16 35 52.9528530 -28 12 57.661515 1.55 2.56 2.81 2.93 3.18 B0.2V 901 0
144 HD 150041 * 16 40 44.5831489080 -48 45 22.209141924 6.39 7.16 7.07 8.05   B1/2Ib 77 0
145 NGC 6193 OpC 16 41 17 -48 46.6           ~ 149 0
146 CD-48 11069 * 16 41 22.0940750424 -48 44 56.992596576 7.86 10.07 9.71 9.92   B0IV 27 0
147 CD-48 11071 SB* 16 41 25.8575675328 -48 45 14.265224424   8.57 8.44     B0V 25 0
148 NAME Sco OB 1 As* 16 53.5 -41 57           ~ 210 0
149 HD 152219 EB* 16 53 55.6078109256 -41 52 51.496403268 6.950 7.705 7.569   7.267 O9.5III(n) 103 0
150 HD 152235 s*b 16 53 58.8528412848 -41 59 39.577848180 6.47 6.92 6.38 5.84 5.42 B0.5Ia 184 0
151 HD 152218 EB* 16 53 59.9905195488 -41 42 52.817214240 7.02 7.78 7.570   7.243 O9IV+B0:V: 146 0
152 HD 152234 s*b 16 54 01.8374467 -41 48 23.007764 4.92 5.64 5.45     B0.5Ia 189 0
153 HD 152233 SB* 16 54 03.5909222280 -41 47 29.841281484 5.93 6.72 6.59     O6II(f) 189 0
154 NGC 6231 OpC 16 54 08.51 -41 49 36.0   2.83 2.6     ~ 522 0
155 HD 152248 EB* 16 54 10.0618206816 -41 49 30.139291596 5.56 6.15 6.088     O7Iabf+O7Ib(f) 246 0
156 CD-41 11037 SB* 16 54 13.2253067352 -41 50 32.518100184 7.21 8.08 7.90     O9IV 74 0
157 V* V964 Sco bC* 16 54 18.3200772432 -41 51 35.651104416 9.126 9.776 9.603 9.61 9.290 B0.5V 58 0
158 HD 152270 WR* 16 54 19.6991292072 -41 49 11.531710092 6.26 6.80 6.597 6.72 6.39 WC7+O5-8 297 0
159 CD-41 11042 EB* 16 54 19.8364084848 -41 50 09.378605616 7.733 9.02 8.80 9.23 7.859 O9.5IV 98 0
160 CCDM J16544-4150A * 16 54 25.95 -41 49 55.8           ~ 2 0
161 HD 152314 Y*? 16 54 32.0048577720 -41 48 18.848961036 7.256 7.974 7.749 9.01 7.446 O9IV 107 0
162 Cl Pismis 24 OpC 17 24 43.0 -34 12 23           ~ 118 0
163 [N78] 49 Y*O 17 25 34.232280 -34 23 11.74812 14.34 13.663 11.872 11.357   O5.5IV(f) 16 0
164 CD-24 13776 * 18 02 26.4314124960 -24 49 15.182354100   11.33 9.90     ~ 3 0
165 HD 164536 * 18 02 38.6215585296 -24 15 19.374907140 6.46 7.37 7.40 8.26   O7.5V(n)z 60 0
166 NGC 6523 Cl* 18 03.2 -24 23           ~ 185 1
167 M 8 HII 18 03 37 -24 23.2           ~ 598 1
168 NAME Her 36SE SB* 18 03 40.3201232304 -24 22 42.857540472 10.26 11.022 10.372 10.267   O8V+ 188 0
169 NAME Hourglass Nebula ISM 18 03 41.1 -24 22 37           ~ 75 2
170 * 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
171 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
172 NGC 6530 OpC 18 04 31 -24 21.5           ~ 400 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
174 HD 165246 ** 18 06 04.6792554840 -24 11 43.890335448 6.90 7.70 7.60 8.77   O8V(n) 77 0
175 NGC 6611 583 * 18 18 29.8852537056 -13 36 24.835940532   12.40 12.30     B9III 9 0
176 BD-13 4921 * 18 18 29.9553677376 -13 49 57.614440296 9.81 10.41 9.91     B0.5V 52 0
177 RCW 165 HII 18 18 30 -13 42.5           ~ 6 0
178 2MASS J18183095-1343083 Y*O 18 18 30.9568964448 -13 43 08.219371944 12.13 12.456 11.215 11.01 9.376 O8.5V 32 0
179 LS IV -13 14 Y*O 18 18 32.2227699960 -13 48 48.055623228 11.343 11.024 10.296 10.38 9.430 OB 49 0
180 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 53 0
181 HD 168075 SB* 18 18 36.0418343184 -13 47 36.449731536 8.62 9.22 8.77 9.45   O7V(n)((f))z 138 0
182 HD 168076 ** 18 18 36.4205083536 -13 48 02.420915796 8.12 8.72 8.25 7.62 7.21 O4III(f) 188 0
183 2MASS J18183749-1343393 Y*O 18 18 37.4984975040 -13 43 39.417078468 14.971 14.487 12.968   10.692 O7V((f))z 29 0
184 2MASS J18183812-1344255 Y*O 18 18 38.1383029656 -13 44 25.457011836 14.931 14.35 13.42   11.843 B2V 18 0
185 BD-13 4927 Y*O 18 18 40.0938541704 -13 45 18.603231696 10.12 10.14 9.48 9.71   O7II(f) 73 0
186 2MASS J18184096-1345296 Y*O 18 18 40.9652335752 -13 45 29.644481772 12.01 11.85 11.05     B0.5V 30 0
187 BD-13 4928 Be* 18 18 42.7761777816 -13 46 50.969988732 10.05 10.604 10.044 10.23 9.345 OB- 63 0
188 M 16 OpC 18 18 45 -13 47.5   6.58 6.0     ~ 1006 2
189 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: 61 0
190 W 37 Rad 18 18 50.1 -13 46 44           ~ 24 1
191 NGC 6611 349 * 18 18 50.5730358144 -13 47 33.950690700   13.01 11.61     G5III 17 0
192 2MASS J18185267-1349427 Y*O 18 18 52.6749052848 -13 49 42.634556148 9.04 9.71 9.45   8.968 O9.7IIIp 99 0
193 HD 168137 SB* 18 18 56.1894798360 -13 48 31.092549588 8.72 9.36 8.94 9.55   O8Vz 117 0
194 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 81 0
195 SH 2-49 HII 18 19.0 -13 52           ~ 32 1
196 NGC 6618 258 Y*O 18 20 22.6995127512 -16 08 34.169829720 15.03 14.99 13.69     O8.5Vz 32 0
197 NGC 6618 326 Y*O 18 20 25.8639501480 -16 08 32.406597600 16.39 15.87 14.20     ~ 35 0
198 2MASS J18202742-1613309 Y*O 18 20 27.4206604920 -16 13 30.969103332   12.45 11.28 10.6   OB 29 0
199 BD-16 4818 Y*O 18 20 35.3856109704 -16 10 48.509924232 10.62 10.67 10.03 10.02   O8.5V 50 0
200 NGC 6618 OpC 18 20 47 -16 10.3           ~ 1574 0
201 HD 195965 * 20 32 25.5891987312 +48 12 59.317612308 6.03 6.899 6.974     B0V 112 0
202 Cl Bica 1 OpC 20 33 10 +41 13.1           ~ 10 0
203 Ass Cyg OB 2 As* 20 33.2 +41 19           ~ 890 0
204 GSC 03157-00872 * 20 33 13.6906302984 +41 13 05.770090668 15.27 14.73 12.92     O8V 31 0
205 Cl Bica 2 OpC 20 33 15 +41 18.7           ~ 17 0
206 Schulte 23 * 20 33 15.7083033168 +41 20 17.174193540 14.21 14.07 12.61     O9V 36 0
207 GSC 03161-01385 * 20 33 21.0165110136 +41 17 40.120725840 14.57 14.24 12.70     O9V 30 0
208 2MASS J20350798+4649321 * 20 35 07.9889481720 +46 49 32.096423028 14.829 14.623 13.246 12.307   O8V 3 0
209 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* 31 0
210 Cl Berkeley 90 OpC 20 35 17 +46 50.6           ~ 28 0
211 IRAS 20342+4645 LP* 20 35 52.2883485620 +46 55 29.026044968           ~ 2 0
212 IC 5070 HII 20 51.0 +44 22           ~ 201 1
213 2MASS J20522503+4437562 IR 20 52 25.03704 +44 37 56.2008           ~ 2 0
214 * 57 Cyg EB* 20 53 14.7550278 +44 23 14.140852 4.05 4.63 4.77 4.84 4.97 B5V 187 0
215 2MASS J20531694+4424298 IR 20 53 16.94496 +44 24 29.8620           ~ 2 0
216 TYC 3179-756-1 * 20 54 34.7221654200 +44 02 42.509309460   12.19 11.14     ~ 3 0
217 HD 199579 SB* 20 56 34.7779063080 +44 55 29.000891928 5.16 6.01 5.96     O6.5V((f))z 357 0
218 TYC 3179-1209-1 * 20 56 37.0000781112 +44 19 48.488897640   10.14 9.97     A0III 4 0
219 NAME Gulf of Mexico DNe 20 56.8 +43 52           ~ 48 0
220 NGC 7000 Cl* 20 58 47 +44 19.8           ~ 389 0
221 HD 201795 * 21 10 38.5495121016 +38 57 40.324573944 6.61 7.50 7.53     B1V 37 0
222 NAME Vela Star Cloud ClG ~ ~           ~ 23 0

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2023.01.30-22:51:52

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