2016A&A...594A..82R

Query : 2016A&A...594A..82R

2016A&A...594A..82R - Astronomy and Astrophysics, volume 594A, 82-82 (2016/10-1)

X-ray and optical spectroscopy of the massive young open cluster IC 1805.

RAUW G. and NAZE Y.

Abstract (from CDS):

Context. Very young open clusters are ideal places to study the X-ray properties of a homogeneous population of early-type stars. In this respect, the IC 1805 open cluster is very interesting as it hosts the O4 If+ star HD 15570 thought to be in an evolutionary stage intermediate between a normal O-star and a Wolf-Rayet star.
Aims. Such a star could provide a test for theoretical models aiming at explaining the empirical scaling relation between the X-ray and bolometric luminosities of O-type stars.
Methods. We have observed IC 1805 with XMM-Newton and further collected optical spectroscopy of some of the O-star members of the cluster.
Results. The optical spectra allow us to revisit the orbital solutions of BD+60deg 497 and HD 15558, and provide the first evidence of binarity for BD+60deg 498. X-ray emission from colliding winds does not appear to play an important role among the O-stars of IC 1805. Notably, the X-ray fluxes do not vary significantly between archival X-ray observations and our XMM-Newton pointing. The very fast rotator BD+60deg 513, and to a lesser extent the O4 If+ star HD 15570 appear somewhat underluminous. Whilst the underluminosity of HD 15570 is only marginally significant, its amplitude is found to be compatible with theoretical expectations based on its stellar and wind properties. A number of other X-ray sources are detected in the field, and the brightest objects, many of which are likely low-mass pre-main sequence stars, are analyzed in detail.

Abstract Copyright: © ESO, 2016

Journal keyword(s): stars: early-type - open clusters and associations: individual: IC 1805 - X-rays: stars

VizieR on-line data: <Available at CDS (J/A+A/594/A82): tablea1.dat>

CDS comments: Paragraph 4.1.3 Cl* Trumpler 14 MJ 257 not identified.

Simbad objects: 205

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Number of rows : 205
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 HD 14947 s*b 02 26 46.9899705528 +58 52 33.118732380 7.83 8.44 7.98     O4.5If 254 0
2 XMMU J023039.8+612949 X 02 30 39.873 +61 29 49.62           ~ 1 0
3 XMMU J023040.1+613040 Y*? 02 30 40.19 +61 30 41.9           ~ 2 0
4 2MASS J02305077+6130222 Y*? 02 30 50.7735275736 +61 30 22.262857524           ~ 2 0
5 XMMU J023113.7+612712 X 02 31 13.771 +61 27 12.29           ~ 1 0
6 XMMU J023116.3+612321 X 02 31 16.339 +61 23 21.69           ~ 1 0
7 XMMU J023121.7+613020 X 02 31 21.778 +61 30 20.84           ~ 1 0
8 XMMU J023122.8+613748 X 02 31 22.854 +61 37 48.74           ~ 1 0
9 XMMU J023124.2+613702 X 02 31 24.275 +61 37 02.89           ~ 1 0
10 XMMU J023127.7+611513 X 02 31 27.700 +61 15 13.33           ~ 1 0
11 XMMU J023128.1+611644 X 02 31 28.154 +61 16 44.40           ~ 1 0
12 XMMU J023129.2+612725 X 02 31 29.239 +61 27 25.31           ~ 1 0
13 XMMU J023129.2+613623 X 02 31 29.282 +61 36 23.38           ~ 1 0
14 XMMU J023138.6+613209 X 02 31 38.600 +61 32 09.53           ~ 1 0
15 XMMU J023145.6+612856 X 02 31 45.632 +61 28 56.25           ~ 1 0
16 XMMU J023147.0+613025 X 02 31 47.048 +61 30 25.70           ~ 1 0
17 XMMU J023147.2+613207 X 02 31 47.205 +61 32 07.53           ~ 1 0
18 XMMU J023150.3+613601 * 02 31 50.2263712040 +61 35 59.940012418           ~ 2 0
19 XMMU J023150.5+613257 Y*? 02 31 50.398 +61 32 59.24           ~ 2 0
20 2MASS J02315073+6133323 Y*O 02 31 50.7367268928 +61 33 32.262243732           f8V 3 0
21 2MASS J02315238+6128279 Y*? 02 31 52.385 +61 28 27.91           ~ 2 0
22 2MASS J02315515+6131229 Y*? 02 31 55.156 +61 31 22.90           ~ 2 0
23 XMMU J023155.3+612249 X 02 31 55.337 +61 22 49.77           ~ 1 0
24 XMMU J023156.4+613235 X 02 31 56.421 +61 32 35.00           ~ 1 0
25 XMMU J023156.6+613345 X 02 31 56.659 +61 33 45.38           ~ 1 0
26 2MASS J02315707+6132448 Y*O 02 31 57.080 +61 32 44.81           ~ 5 0
27 BD+60 497 Y*O 02 31 57.0901516200 +61 36 43.948697940 10.466 9.39 8.85     O6.5V((f))+O8/B0V 104 0
28 XMMU J023157.4+613348 X 02 31 57.459 +61 33 48.03           ~ 1 0
29 XMMU J023200.0+612050 X 02 32 00.028 +61 20 50.60           ~ 1 0
30 CXOU J023200.4+612039 Y*O 02 32 00.458 +61 20 39.05           ~ 2 0
31 XMMU J023200.7+613153 X 02 32 00.702 +61 31 53.05           ~ 1 0
32 IC 1805 108 Y*? 02 32 01.9040269296 +61 26 48.869524572 13.76 13.59 12.80     g0V 7 0
33 2MASS J02320270+6129520 Y*O 02 32 02.7200155416 +61 29 51.987589872 14.51 15.51 15.18     ~ 5 0
34 2MASS J02320698+6132429 LP* 02 32 06.9911370096 +61 32 42.825338556           ~ 6 0
35 2MASS J02320801+6122036 Y*O 02 32 08.0221389960 +61 22 03.550312272           k4V 4 0
36 XMMU J023208.4+613529 X 02 32 08.444 +61 35 29.80           ~ 1 0
37 IC 1805 110 Y*O 02 32 09.0572821368 +61 26 30.136232724 14.57 14.04 13.26     A8III 9 0
38 XMMU J023209.1+613246 X 02 32 09.151 +61 32 46.36           ~ 1 0
39 2MASS J02320924+6130404 Y*O 02 32 09.2429735400 +61 30 40.412616660           ~ 5 0
40 LS I +61 275 EB* 02 32 09.6299057496 +61 38 23.556279372 11.59 12.04 11.445 11.64   B1V 31 0
41 BD+60 498 Y*O 02 32 10.8542551368 +61 33 07.940208384 11.61 10.47 9.94     O9V 104 0
42 2MASS J02321111+6131027 Y*O 02 32 11.1227905344 +61 31 02.859312360 16.03 15.97 15.13     B8 8 0
43 EM* MWC 50 Y*? 02 32 11.4523605192 +61 21 45.253334772 11.64 11.77 10.87     Be 41 0
44 XMMU J023212.5+613856 X 02 32 12.581 +61 38 56.23           ~ 1 0
45 2MASS J02321420+6133367 Y*? 02 32 14.200 +61 33 36.72           ~ 2 0
46 XMMU J023216.4+613209 X 02 32 16.452 +61 32 09.30           ~ 1 0
47 BD+60 499 Y*O 02 32 16.7518284696 +61 33 14.996422332 10.27 10.85 10.31     O9.5V 76 0
48 CXOU J023216.9+612927 Y*O 02 32 16.9633764456 +61 29 27.371271768           ~ 3 0
49 XMMU J023218.2+612650 X 02 32 18.271 +61 26 50.56           ~ 1 0
50 2MASS J02321872+6131180 Y*? 02 32 18.724 +61 31 18.06           ~ 2 0
51 2MASS J02322016+6130148 Y*? 02 32 20.166 +61 30 14.85           ~ 2 0
52 2MASS J02322095+6127192 Y*? 02 32 20.9450894517 +61 27 19.217205314           g5V 4 0
53 2MASS J02322142+6133006 Y*O 02 32 21.421 +61 33 00.66           ~ 3 0
54 2MASS J02322153+6132368 Y*? 02 32 21.5348508887 +61 32 36.906847590           g0V 3 0
55 2MASS J02322221+6123451 Y*O 02 32 22.2262836288 +61 23 45.398373792           ~ 3 0
56 2MASS J02322487+6132515 Y*? 02 32 24.8766473663 +61 32 51.547498803           ~ 4 0
57 2MASS J02322520+6130310 Y*? 02 32 25.209 +61 30 31.02           ~ 2 0
58 XMMU J023226.3+613111 X 02 32 26.399 +61 31 11.00           ~ 1 0
59 IC 1805 130 Y*O 02 32 29.9162703768 +61 27 07.623298728 13.91 14.03 13.38     B3V 16 0
60 2MASS J02323020+6117489 Y*O 02 32 30.2095262256 +61 17 48.946858476 11.36 11.18 10.59     ~ 7 0
61 XMMU J023230.7+613609 X 02 32 30.703 +61 36 09.27           ~ 1 0
62 XMMU J023230.8+613206 X 02 32 30.828 +61 32 06.70           ~ 1 0
63 XMMU J023231.9+613719 X 02 32 31.994 +61 37 19.62           ~ 1 0
64 2MASS J02323268+6138342 Y*O 02 32 32.6861806872 +61 38 34.141020792 14.81 14.70 14.07     B7V 6 0
65 2MASS J02323298+6126191 Y*? 02 32 32.981 +61 26 19.19           ~ 2 0
66 2MASS J02323312+6124275 Y*O 02 32 33.1257582480 +61 24 27.382884444 16.81 16.75 15.74     a3V 5 0
67 XMMU J023233.5+611845 X 02 32 33.507 +61 18 45.59           ~ 1 0
68 XMMU J023234.2+611728 X 02 32 34.267 +61 17 28.81           ~ 1 0
69 XMMU J023236.1+612758 X 02 32 36.199 +61 27 58.97           ~ 1 0
70 BD+60 501 Y*O 02 32 36.2781863760 +61 28 25.586191812 11.062 10.02 9.56     O7V(n)((f))z 118 0
71 XMMU J023236.4+612840 X 02 32 36.495 +61 28 40.99           ~ 1 0
72 XMMU J023237.2+612810 X 02 32 37.269 +61 28 10.25           ~ 1 0
73 IC 1805 139 Y*O 02 32 37.4109279840 +61 32 19.288779432 13.51 13.63 13.10     B4V 9 0
74 2MASS J02323857+6132049 Y*O 02 32 38.5747918512 +61 32 04.915579200           ~ 5 0
75 2MASS J02323956+6126579 Y*? 02 32 39.5573780400 +61 26 57.878765743           ~ 3 0
76 2MASS J02323972+6121549 Y*? 02 32 39.7245695640 +61 21 54.830779416           ~ 3 0
77 2MASS J02324022+6128147 Y*? 02 32 40.224 +61 28 14.76           ~ 2 0
78 XMMU J023240.6+612519 X 02 32 40.680 +61 25 19.28           ~ 1 0
79 LS I +61 283 Y*O 02 32 40.8309131016 +61 27 59.823575892 11.44 11.95 11.40     B0.5V 27 0
80 2MASS J02324147+6125537 Y*O 02 32 41.4683252712 +61 25 53.756466564           f6V 8 0
81 XMMU J023242.0+614021 X 02 32 42.030 +61 40 21.81           ~ 1 0
82 XMMU J023242.2+612703 X 02 32 42.267 +61 27 03.67           ~ 1 0
83 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) 314 0
84 2MASS J02324314+6130587 Y*O 02 32 43.1491210008 +61 30 58.796783748           Ae/Be 9 0
85 2MASS J02324320+6128044 Y*O 02 32 43.2023938488 +61 28 04.434187764 14.70 14.70 13.93     A6 9 0
86 2MASS J02324324+6133353 Y*? 02 32 43.2547702944 +61 33 35.252800560           ~ 3 0
87 IC 1805 152 Y*O 02 32 43.5296031792 +61 26 31.923173220 13.52 13.64 12.91     B3V 14 0
88 LS I +61 285 Y*O 02 32 43.9072458024 +61 27 20.390870772 10.73 11.19 10.65     B2 21 0
89 2MASS J02324412+6130397 Y*O 02 32 44.1257220912 +61 30 39.780804024           g8IV 5 0
90 2MASS J02324552+6126313 Y*? 02 32 45.5254087512 +61 26 31.181872266           ~ 4 0
91 2MASS J02324576+6129593 Y*O 02 32 45.7635094176 +61 29 59.393642280           ~ 3 0
92 2MASS J02324622+6127296 Y*? 02 32 46.2188005800 +61 27 29.569233930           ~ 3 0
93 XMMU J023247.1+613754 * 02 32 47.2539077169 +61 37 55.092924405           ~ 2 0
94 2MASS J02324851+6124272 Y*? 02 32 48.510 +61 24 27.27           ~ 2 0
95 XMMU J023248.7+614050 X 02 32 48.719 +61 40 50.10           ~ 1 0
96 XMMU J023249.3+613615 * 02 32 49.4013652649 +61 36 15.006299303           ~ 3 0
97 HD 15570 Em* 02 32 49.4207394600 +61 22 42.089384892 8.40 8.80 8.11 7.41 6.86 O4If 305 0
98 2MASS J02325037+6133419 Y*O 02 32 50.3682604176 +61 33 41.921399628           ~ 5 0
99 IC 1805 OpC 02 32 50.4 +61 28 16           ~ 519 1
100 2MASS J02325396+6128041 Y*O 02 32 53.9561698272 +61 28 04.172562624           ~ 5 0
101 2MASS J02325400+6125278 Y*? 02 32 54.002 +61 25 27.90           ~ 2 0
102 2MASS J02325403+6134119 Y*? 02 32 54.039 +61 34 11.94           ~ 2 0
103 XMMU J023256.4+612534 X 02 32 56.466 +61 25 34.49           ~ 1 0
104 XMMU J023256.7+613040 X 02 32 56.711 +61 30 40.62           ~ 1 0
105 XMMU J023257.2+612108 X 02 32 57.290 +61 21 08.55           ~ 1 0
106 IC 1805 166 Y*O 02 32 57.8246261160 +61 27 26.532821700 12.28 12.56 11.99     B2V 21 0
107 XMMU J023259.1+612556 X 02 32 59.182 +61 25 56.50           ~ 1 0
108 2MASS J02325991+6125031 Y*O 02 32 59.9129122872 +61 25 03.118231380           ~ 4 0
109 2MASS J02330078+6126095 Y*? 02 33 00.784 +61 26 09.55           ~ 2 0
110 XMMU J023300.8+612912 X 02 33 00.868 +61 29 12.00           ~ 1 0
111 XMMU J023300.9+613737 X 02 33 00.969 +61 37 37.82           ~ 1 0
112 2MASS J02330106+6127047 Y*? 02 33 01.062 +61 27 04.80           ~ 2 0
113 CXOU J023301.4+613133 Y*O 02 33 01.420 +61 31 33.91           ~ 3 0
114 XMMU J023302.9+612605 X 02 33 02.926 +61 26 05.82           ~ 1 0
115 2MASS J02330383+6129093 Y*O 02 33 03.8306027064 +61 29 09.244447800           ~ 5 0
116 2MASS J02330465+6133424 Y*O 02 33 04.6748230176 +61 33 42.420887748           ~ 3 0
117 IC 1805 175 Y*O 02 33 05.2757131680 +61 27 07.152609852 13.54 13.70 13.07     B2.5V 15 0
118 2MASS J02330537+6122506 Y*? 02 33 05.372 +61 22 50.67           ~ 2 0
119 XMMU J023305.6+612201 X 02 33 05.696 +61 22 01.79           ~ 1 0
120 XMMU J023306.1+613731 * 02 33 06.1035153050 +61 37 30.479697160           ~ 2 0
121 2MASS J02330714+6136097 Y*O 02 33 07.1404243992 +61 36 09.683366580           ~ 3 0
122 XMMU J023307.8+614043 X 02 33 07.825 +61 40 43.84           ~ 1 0
123 2MASS J02330887+6125221 Y*O 02 33 08.8722268612 +61 25 22.099037599           g5V 6 0
124 2MASS J02330888+6128455 Y*O 02 33 08.8931343648 +61 28 45.556284540 15.49 15.48 14.83     b8IV,Ae/Be 7 0
125 2MASS J02330994+6124594 Y*O 02 33 09.949 +61 24 59.50           ~ 3 0
126 2MASS J02331002+6132086 Y*O 02 33 10.0259760936 +61 32 08.624531472           ~ 5 0
127 2MASS J02331034+6124025 Y*? 02 33 10.346 +61 24 02.51           ~ 2 0
128 XMMU J023310.3+614106 X 02 33 10.378 +61 41 06.94           ~ 1 0
129 2MASS J02331111+6130192 Y*O 02 33 11.1220960056 +61 30 19.203166152           k-mV 4 0
130 2MASS J02331141+6131150 Y*O 02 33 11.4222513408 +61 31 14.968401384           ~ 5 0
131 IC 1805 184 Y*O 02 33 11.9491545048 +61 30 57.732944580 14.53 14.37 13.64     f5V 6 0
132 2MASS J02331290+6131322 Y*? 02 33 12.906 +61 31 32.24           ~ 2 0
133 2MASS J02331342+6131522 Y*O 02 33 13.4358844296 +61 31 52.191792084           ~ 4 0
134 IC 1805 187 Y*O 02 33 14.6477229144 +61 24 02.849610672 13.62 13.17 12.41     b-f 7 0
135 XMMU J023314.6+613011 Y*? 02 33 14.917 +61 30 10.89           ~ 2 0
136 2MASS J02331524+6126057 Y*? 02 33 15.247 +61 26 05.70           ~ 2 0
137 2MASS J02331555+6131443 Y*? 02 33 15.557 +61 31 44.39           ~ 2 0
138 2MASS J02331619+6120483 Y*? 02 33 16.1833617659 +61 20 48.335298585           ~ 4 0
139 2MASS J02331747+6128083 Y*? 02 33 17.4758880091 +61 28 08.360423521           g 4 0
140 CXOU J023317.8+612828 Y*O 02 33 17.856 +61 28 28.26           ~ 3 0
141 2MASS J02332014+6122105 Y*O 02 33 20.1366691992 +61 22 10.565086692 16.83 17.00 15.47     F8 7 0
142 HD 15629 Y*O 02 33 20.5873992264 +61 31 18.188762844 8.23 8.85 8.42     O4.5V((fc)) 241 0
143 2MASS J02332163+6130147 Y*O 02 33 21.6379463400 +61 30 14.769756216           ~ 5 0
144 XMMU J023322.5+612509 X 02 33 22.545 +61 25 09.14           ~ 1 0
145 2MASS J02332276+6127402 Y*O 02 33 22.7696154288 +61 27 40.174922556           ~ 3 0
146 XMMU J023323.6+612443 Y*? 02 33 23.531 +61 24 43.52           ~ 2 0
147 XMMU J023325.0+613553 X 02 33 25.090 +61 35 53.94           ~ 1 0
148 2MASS J02332513+6127199 Y*? 02 33 25.139 +61 27 19.94           ~ 2 0
149 XMMU J023326.4+613531 X 02 33 26.482 +61 35 31.95           ~ 1 0
150 2MASS J02332858+6125271 Y*O 02 33 28.5768745680 +61 25 27.149062584           ~ 3 0
151 IC 1805 200 Y*O 02 33 30.0926019984 +61 28 54.018455628 14.58 14.58 13.90     B4V 11 0
152 2MASS J02333119+6129245 Y*? 02 33 31.191 +61 29 24.58           ~ 2 0
153 2MASS J02333263+6125149 Y*O 02 33 32.6310238536 +61 25 14.942847576           ~ 3 0
154 XMMU J023332.8+613545 X 02 33 32.815 +61 35 45.09           ~ 1 0
155 XMMU J023333.0+612917 X 02 33 33.097 +61 29 17.21           ~ 1 0
156 XMMU J023333.4+612855 X 02 33 33.421 +61 28 55.37           ~ 1 0
157 XMMU J023334.4+612703 X 02 33 34.492 +61 27 03.99           ~ 1 0
158 XMMU J023334.5+613840 X 02 33 34.596 +61 38 40.27           ~ 1 0
159 XMMU J023334.6+611921 X 02 33 34.624 +61 19 21.91           ~ 1 0
160 XMMU J023335.0+612811 Y*? 02 33 35.160 +61 28 09.52           ~ 2 0
161 XMMU J023335.4+612852 X 02 33 35.472 +61 28 52.99           ~ 1 0
162 XMMU J023336.2+613637 X 02 33 36.254 +61 36 37.31           ~ 1 0
163 XMMU J023338.3+613103 X 02 33 38.328 +61 31 03.57           ~ 1 0
164 2MASS J02334145+6125016 Y*O 02 33 41.4510543816 +61 25 01.617293568           ~ 3 0
165 XMMU J023344.2+612440 X 02 33 44.232 +61 24 40.88           ~ 1 0
166 2MASS J02334567+6127529 Y*O 02 33 45.678 +61 27 52.96           ~ 3 0
167 XMMU J023347.7+612453 X 02 33 47.769 +61 24 53.37           ~ 1 0
168 2MASS J02334834+6128377 Y*? 02 33 48.342 +61 28 37.73           ~ 2 0
169 XMMU J023351.6+612213 X 02 33 51.691 +61 22 13.54           ~ 1 0
170 2MASS J02335176+6125258 Y*? 02 33 51.764 +61 25 25.85           ~ 2 0
171 XMMU J023351.8+613355 X 02 33 51.857 +61 33 55.36           ~ 1 0
172 XMMU J023352.2+613737 X 02 33 52.234 +61 37 37.72           ~ 1 0
173 2MASS J02335271+6126178 Y*O 02 33 52.7116624809 +61 26 17.807972033           ~ 4 0
174 XMMU J023353.0+613717 X 02 33 53.040 +61 37 17.01           ~ 1 0
175 XMMU J023353.7+612151 X 02 33 53.766 +61 21 51.80           ~ 1 0
176 XMMU J023354.4+613145 * 02 33 54.2857619596 +61 31 46.540440426           ~ 2 0
177 2MASS J02335720+6126278 Y*O 02 33 57.2018808264 +61 26 27.847977144 15.70 15.45 14.86     B5 7 0
178 XMMU J023359.8+613215 X 02 33 59.824 +61 32 15.58           ~ 1 0
179 BD+60 512 Y*O 02 34 00.4627547640 +61 23 46.062853584 9.38 10.94 10.25     F8V 13 0
180 BD+60 513 Y*O 02 34 02.5297182912 +61 23 10.877763048 9.38 9.88 9.39     O7Vnz 109 0
181 XMMU J023403.5+613323 X 02 34 03.573 +61 33 23.02           ~ 1 0
182 XMMU J023405.4+612940 X 02 34 05.426 +61 29 40.80           ~ 1 0
183 XMMU J023407.5+612817 X 02 34 07.576 +61 28 17.89           ~ 1 0
184 2MASS J02340767+6129337 Y*O 02 34 07.6722211296 +61 29 33.656543808 18.51 17.29 16.27     ~ 3 0
185 [D75b] Em* 02-094 Be* 02 34 10.2683061096 +61 24 40.404354156 15.18 15.054 14.229 14.001   B8Ve 13 0
186 XMMU J023412.6+612611 X 02 34 12.631 +61 26 11.78           ~ 1 0
187 XMMU J023414.7+613027 X 02 34 14.748 +61 30 27.73           ~ 1 0
188 XMMU J023415.6+612442 Y*? 02 34 15.2708618928 +61 24 42.794980704           ~ 2 0
189 XMMU J023416.5+612741 X 02 34 16.545 +61 27 41.33           ~ 1 0
190 XMMU J023419.0+612446 X 02 34 19.065 +61 24 46.68           ~ 1 0
191 XMMU J023420.2+613532 X 02 34 20.244 +61 35 32.12           ~ 1 0
192 XMMU J023421.6+612342 X 02 34 21.667 +61 23 42.99           ~ 1 0
193 XMMU J023426.9+613307 X 02 34 26.934 +61 33 07.15           ~ 1 0
194 XMMU J023428.3+613341 X 02 34 28.334 +61 33 41.67           ~ 1 0
195 2MASS J02343148+6130350 Y*O 02 34 31.4910714120 +61 30 35.095652208 11.65 11.97 11.51     B2V 26 0
196 HD 16691 Em* 02 42 52.0259349000 +56 54 16.463813796 10.187 9.07 8.70     O4If 155 0
197 HD 93129A SB* 10 43 57.4587319296 -59 32 51.394897284 6.46 7.478 7.310 7.84   O2If* 169 0
198 NGC 3372 HII 10 45 02.23 -59 41 59.8           ~ 1014 2
199 NGC 6231 OpC 16 54 10.8 -41 48 43           ~ 538 0
200 Cl HM 1 OpC 17 19 00 -38 49.0           ~ 49 0
201 BD+40 4220 s*b 20 32 22.4238071594 +41 18 18.942475904 11.32 10.61 9.185     O7Iafep 399 0
202 Schulte 9 s*b 20 33 10.7362926720 +41 15 08.222370372 13.38 12.77 10.96     O5I+O4III 232 0
203 Ass Cyg OB 2 As* 20 33.2 +41 19           ~ 943 0
204 Schulte 7 * 20 33 14.1095938872 +41 20 21.904113804 12.24 12.00 10.55     O3If* 145 0
205 BD+40 4227A SB* 20 33 15.0781182864 +41 18 50.479292556 10.42 10.27 8.98 8.03 6.83 O6Ib(fc)+O4.5:III:(fc) 246 0

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