2019A&A...625A.104R


Query : 2019A&A...625A.104R

2019A&A...625A.104R - Astronomy and Astrophysics, volume 625A, 104-104 (2019/5-1)

Testing massive star evolution, star formation history, and feedback at low metallicity. Spectroscopic analysis of OB stars in the SMC Wing.

RAMACHANDRAN V., HAMANN W.-R., OSKINOVA L.M., GALLAGHER J.S., HAINICH R., SHENAR T., SANDER A.A.C., TODT H. and FULMER L.

Abstract (from CDS):

Stars that start their lives with spectral types O and early B are the progenitors of core-collapse supernovae, long gamma-ray bursts, neutron stars, and black holes. These massive stars are the primary sources of stellar feedback in star-forming galaxies. At low metallicities, the properties of massive stars and their evolution are not yet fully explored. Here we report a spectroscopic study of 320 massive stars of spectral types O (23 stars) and B (297 stars) in the Wing of the Small Magellanic Cloud (SMC). The spectra, which we obtained with the ESO Very Large Telescope, were analyzed using state-of-the-art stellar atmosphere models, and the stellar parameters were determined. We find that the stellar winds of our sample stars are generally much weaker than theoretically expected. The stellar rotation rates show broad, tentatively bimodal distributions. The upper Hertzsprung-Russell diagram (HRD) is well populated by the stars of our sample from a specific field in the SMC Wing. A few very luminous O stars are found close to the main sequence, while all other, slightly evolved stars obey a strict luminosity limit. Considering additional massive stars in evolved stages, with published parameters and located all over the SMC, essentially confirms this picture. The comparison with single-star evolutionary tracks suggests a dichotomy in the fate of massive stars in the SMC. Only stars with an initial mass below ∼30M seem to evolve from the main sequence to the cool side of the HRD to become a red supergiant and to explode as type II-P supernova. In contrast, stars with initially more than ∼30M appear to stay always hot and might evolve quasi chemically homogeneously, finally collapsing to relatively massive black holes. However, we find no indication that chemical mixing is correlated with rapid rotation. We measured the key parameters of stellar feedback and established the links between the rates of star formation and supernovae. Our study demonstrates that in metal-poor environments stellar feedback is dominated by core-collapse supernovae in combination with winds and ionizing radiation supplied by a few of the most massive stars. We found indications of the stochastic mode of massive star formation, where the resulting stellar population is fully capable of producing large-scale structures such as the supergiant shell SMC-SGS 1 in the Wing. The low level of feedback in metal-poor stellar populations allows star formation episodes to persist over long timescales.

Abstract Copyright: © ESO 2019

Journal keyword(s): stars: evolution - stars: massive - stars: mass-loss - Magellanic Clouds - Hertzsprung-Russell and C-M diagrams - techniques: spectroscopic

VizieR on-line data: <Available at CDS (J/A+A/625/A104): tableb1.dat tableb2.dat tableb4.dat>

Nomenclature: Table B.1: SMCSGS-FS NNN (Nos 1-320).

Simbad objects: 347

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Number of rows : 347
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2022
#notes
1 M 31 G 00 42 44.330 +41 16 07.50 4.86 4.36 3.44     ~ 11880 1
2 LHA 115-N 11 EmO 00 45 02.90 -73 16 40.0   14.36       ~ 19 0
3 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 10314 1
4 NGC 330 Cl* 00 56 20.59 -72 27 12.5 9.37 9.76 9.55   8.89 ~ 387 0
5 IC 1613 GiC 01 04 54.2 +02 08 00   10.42 10.01 9.77   ~ 1171 2
6 HD 6884 s*b 01 07 18.2182685856 -72 28 03.657105156   10.32 10.2     B9Ia0ek 119 0
7 SMCSGS-FS 1 * 01 22 05.1397723368 -73 13 07.081322808           B0.7V: 1 0
8 2MASS J01220702-7313599 * 01 22 07.1261795712 -73 14 00.140242884   15.79       B0.2V: 3 0
9 SMCSGS-FS 3 * 01 22 10.1037831768 -73 16 52.894187616           B2.5V: 1 0
10 2MASS J01221456-7308252 * 01 22 14.5964159304 -73 08 25.419252732   14.38 14.48     B2III: 8 0
11 2dFS 3565 * 01 22 25.5452853744 -73 07 18.786697608   16.65       B2V: 3 0
12 2MASS J01222572-7311574 * 01 22 25.7652100944 -73 11 57.513780924   16.01       B1.5IV: 5 0
13 SMCSGS-FS 7 * 01 22 28.5619229880 -73 17 39.952623768           B2V: 1 0
14 2dFS 3571 * 01 22 31.7046333192 -73 19 12.710706852   16.41       B2V: 4 0
15 SMCSGS-FS 9 * 01 22 44.0329082160 -73 11 42.226363572           B2(IV)e: 1 0
16 SMCSGS-FS 10 * 01 22 47.7599146872 -73 09 25.579707264           B7V: 1 0
17 SMCSGS-FS 11 * 01 22 49.2104546520 -73 13 49.762051500           B2V: 1 0
18 SMCSGS-FS 12 * 01 22 49.8801929856 -73 15 20.261113848           B8V: 1 0
19 2MASS J01225085-7316071 * 01 22 50.8586002632 -73 16 07.012093944   15.25       B1.5IV: 4 0
20 SMCSGS-FS 14 * 01 22 54.3873588096 -73 13 42.796567308           B2.5V: 1 0
21 SMCSGS-FS 15 * 01 22 56.3708935176 -73 14 16.872024912           B2.5IV: 1 0
22 2MASS J01225729-7322013 * 01 22 57.2207383224 -73 22 01.132386276   15.48       B1.5V: 3 0
23 SMCSGS-FS 17 * 01 23 00.2620206264 -73 16 27.335413380           B5V: 1 0
24 SMCSGS-FS 18 * 01 23 01.3469182584 -73 11 29.760444384           B1.5(IV)e: 1 0
25 SMCSGS-FS 19 * 01 23 03.320 -73 09 36.40           B5V: 1 0
26 SMCSGS-FS 20 * 01 23 03.9228895344 -73 04 56.727968700           B5V: 1 0
27 SMCSGS-FS 21 * 01 23 11.6552997888 -73 15 51.393311496           B5V: 1 0
28 2MASS J01231392-7324097 * 01 23 13.8776325240 -73 24 09.782221284   14.77 15.01     B0.5V: 4 0
29 2MASS J01231422-7308579 * 01 23 14.2803194760 -73 08 57.614129952   16.39       B9III: 5 0
30 SMCSGS-FS 24 * 01 23 14.9053132416 -73 14 00.027100500           B7V: 1 0
31 2dFS 3615 * 01 23 17.0896198272 -73 09 35.312353812   16.44       B3V: 5 0
32 OGLE SMC-ECL- 8007 El* 01 23 17.6716442832 -73 19 56.189156556     17.024   17.058 B5V: 3 0
33 SMCSGS-FS 27 * 01 23 18.6905985096 -73 14 53.966320440           B2.5V: 1 0
34 OGLE SMC-ECL- 6063 EB* 01 23 22.3149154752 -73 23 19.291181784   16.17 16.115   16.258 B5V: 6 0
35 DEM S 160 HII 01 23 22.4 -73 21 59           ~ 6 0
36 OGLE SMC-ECL- 6065 EB* 01 23 23.5058185320 -73 14 15.203558832   15.64 16.200   16.327 B0.7V: 8 0
37 SMCSGS-FS 30 * 01 23 24.8647547880 -73 16 17.986858464           B1V: 1 0
38 2MASS J01232516-7322011 * 01 23 25.1569799688 -73 22 01.056606996   14.24 14.43     O9V: 8 0
39 RX J0123.4-7321 HXB 01 23 27.4174969608 -73 21 22.239773604 14.48 15.39 15.45 15.42 15.4 B1-3(III) 11 0
40 SMCSGS-FS 33 * 01 23 29.8159038528 -73 23 48.418985688           B3V: 1 0
41 SMCSGS-FS 34 * 01 23 34.4999302008 -73 09 31.811488956           B3(V)e: 1 0
42 2dFS 3631 * 01 23 35.8356168528 -73 10 35.261149008   16.21       B1.5V: 4 0
43 LHA 115-S 61 Em* 01 23 35.9423941200 -73 24 05.638654908   14.12 14.2     B0.5(III)e: 5 0
44 2MASS J01233930-7311555 * 01 23 39.2152911144 -73 11 55.283827236   15.97       B0.7V: 3 0
45 2MASS J01234077-7323446 * 01 23 40.8196019136 -73 23 44.517199596   15.40       B0.2V: 3 0
46 2MASS J01234374-7312166 * 01 23 43.7926826736 -73 12 16.463851596   15.12       B0.5V: 4 0
47 2MASS J01234421-7312296 * 01 23 44.1968392872 -73 12 29.439098712   13.57       B0.7V: 4 0
48 SMCSGS-FS 41 * 01 23 45.5995116720 -73 12 57.767020740           B2.5V: 1 0
49 2MASS J01234703-7310556 * 01 23 47.0416446504 -73 10 55.494065352   14.96       B2IV: 4 0
50 SMCSGS-FS 43 * 01 23 47.0755314072 -73 06 57.517044084           B2(V)e: 1 0
51 2MASS J01234791-7313348 * 01 23 47.9238236664 -73 13 34.762761948   15.02 15.23     B0V: 6 0
52 SMCSGS-FS 45 * 01 23 48.7231129944 -73 09 48.957803424           B2IbNwk: 1 0
53 SMCSGS-FS 46 * 01 23 51.7758835704 -73 12 47.707371144           B0V: 1 0
54 2MASS J01235375-7319027 * 01 23 53.7854590752 -73 19 03.001478340   15.88       B2V: 5 0
55 SMCSGS-FS 48 * 01 23 56.7271576584 -73 11 51.781128324           B2V: 1 0
56 SMCSGS-FS 49 * 01 23 56.7831064008 -73 16 12.126789156           B3(IV)e: 1 0
57 SMCSGS-FS 50 * 01 23 56.9703028488 -73 17 20.291674308           B9Ib: 1 0
58 2MASS J01235723-7323532 * 01 23 57.2685963960 -73 23 53.270544084   15.81       B1-5(III)e 3 0
59 SMCSGS-FS 53 * 01 23 59.4530560752 -73 10 51.306385152           B2V: 1 0
60 2MASS J01235947-7309476 * 01 23 59.5096059216 -73 09 48.362709744   16.14       B0.5V: 7 0
61 SMCSGS-FS 54 * 01 24 01.7628298728 -73 09 07.395332976           B1.5V: 1 0
62 OGLE SMC-ECL- 6079 EB* 01 24 01.8345444480 -73 17 57.322487652   14.96 15.18   15.279 B1.5IV: 10 0
63 SMCSGS-FS 56 * 01 24 02.2355823840 -73 09 47.960358336           B0.5V: 2 0
64 SMCSGS-FS 57 * 01 24 02.4248280072 -73 09 25.275260556           B5V: 2 0
65 SMCSGS-FS 58 * 01 24 02.5900052904 -73 24 27.039656556           B2.5V: 1 0
66 OGLE SMC-ECL- 6080 EB* 01 24 03.2683557792 -73 12 07.852277952   15.30 15.478   15.714 B0V: 6 0
67 SMCSGS-FS 60 * 01 24 04.0964594256 -73 14 26.300299020           B0.2V: 1 0
68 OGLE SMC-ECL- 6081 EB* 01 24 04.6318878936 -73 09 07.604989200   15.74 15.892   16.006 B1.5V: 10 0
69 OGLE SMC-ECL- 6082 EB* 01 24 04.85 -73 09 14.8     16.042   16.151 B0V: 8 0
70 SMCSGS-FS 63 * 01 24 06.0952864656 -73 14 18.565474308           B0.5V: 1 0
71 2MASS J01240705-7315284 * 01 24 07.0555120080 -73 15 28.332395640   14.11 14.31     O9.5III 4 0
72 2MASS J01240716-7313482 * 01 24 07.1675747616 -73 13 48.070681644   15.83       B0.2V: 3 0
73 SMCSGS-FS 66 * 01 24 07.600 -73 14 31.50           B2V: 1 0
74 SMCSGS-FS 67 * 01 24 07.7154791304 -73 15 01.480798080           B0V: 1 0
75 LHA 115-N 88 HII 01 24 08.1 -73 09 04           ~ 68 1
76 SMCSGS-FS 68 * 01 24 10.1313865896 -73 25 02.277530004           B2V: 1 0
77 2MASS J01241079-7322099 * 01 24 10.7888269896 -73 22 09.922157976   13.80 13.91     B0.5(II)e: 2 0
78 2MASS J01241091-7309208 * 01 24 10.9362017424 -73 09 20.650294944   15.44 15.65     B0V: 7 0
79 2dFS 3672 * 01 24 11.2329148296 -73 17 20.198885964   16.51       B1.5IV: 3 0
80 SMCSGS-FS 72 * 01 24 11.4449741328 -73 11 54.830208408           B2(II)e: 1 0
81 2MASS J01241157-7314282 * 01 24 11.5807560648 -73 14 28.226307696   14.32 14.34     B0(III)e 5 0
82 SMCSGS-FS 74 * 01 24 11.7586434456 -73 11 35.829264768           B2V: 1 0
83 SMCSGS-FS 75 * 01 24 14.0749492152 -73 22 20.471945772           B1.5V: 1 0
84 SMCSGS-FS 76 * 01 24 15.650 -73 10 01.50           B0.7V: 2 0
85 2MASS J01241725-7319171 * 01 24 17.2713797640 -73 19 16.807363104   14.78       B1.5IV: 4 0
86 SMCSGS-FS 78 * 01 24 20.610 -73 10 09.90           B2V: 2 0
87 SMCSGS-FS 79 * 01 24 21.7926546552 -73 10 56.006284692           B2.5V: 1 0
88 2dFS 3678 * 01 24 22.1725069104 -73 09 43.156195092   16.48       B2.5V: 5 0
89 2MASS J01242222-7308413 * 01 24 22.2456506280 -73 08 41.382924684           B1.5V: 6 0
90 2MASS J01242239-7322595 * 01 24 22.40 -73 22 59.5   16.01       B2IV: 4 0
91 2dFS 3683 * 01 24 24.3159461880 -73 11 39.793454160   15.64       B1.5V: 4 0
92 OGLE SMC-ECL- 6093 EB* 01 24 24.8878369920 -73 13 25.359458160     16.690   16.845 B1.5V: 4 0
93 SMCSGS-FS 85 * 01 24 25.1875519416 -73 10 24.762183996           B0.7V: 2 0
94 SMCSGS-FS 86 * 01 24 26.0113727784 -73 16 42.990098664           B9III: 1 0
95 SMCSGS-FS 87 * 01 24 26.6059111704 -73 11 47.684878872           B2V: 1 0
96 [HCD99] 65 * 01 24 26.7403576392 -73 08 44.055327300           B0.5V: 2 0
97 2MASS J01242798-7314150 * 01 24 27.9810601704 -73 14 14.936993232   13.77 13.97     O9.7V: 2 0
98 SMCSGS-FS 89 * 01 24 28.000 -73 10 13.00   13.73 13.71     O9.5V: 3 0
99 SMCSGS-FS 91 * 01 24 28.1977935408 -73 14 38.996319084           B0.7(IV)e: 1 0
100 SMCSGS-FS 92 * 01 24 29.1607624752 -73 05 44.889336780           B0.5V: 1 0
101 SMCSGS-FS 93 * 01 24 30.7353681384 -73 13 18.227430696           B2.5V: 1 0
102 2dFS 3688 * 01 24 31.1512928040 -73 22 36.092996004   15.98       B1.5V: 4 0
103 SMCSGS-FS 95 * 01 24 31.7128092816 -73 10 24.549537324           B1.5V: 1 0
104 SV* HV 2226 EB* 01 24 31.7402015280 -73 21 49.247195112   15.11 15.205   15.395 B1.5V: 21 0
105 SMCSGS-FS 97 * 01 24 32.0680170696 -73 10 37.702240500           B1.5V: 1 0
106 2MASS J01243342-7314479 * 01 24 33.4450537152 -73 14 48.015074904   15.66       B0.5V: 4 0
107 2dFS 3694 * 01 24 34.4453455008 -73 09 08.884877616   13.67       B1IV: 3 0
108 SMCSGS-FS 100 * 01 24 34.5293506608 -73 09 29.166796008           B2.5V: 1 0
109 SMCSGS-FS 101 * 01 24 35.1477243504 -73 10 20.936746920           B2.5V: 1 0
110 SMCSGS-FS 102 * 01 24 35.5864262856 -73 17 10.447362204           B3V: 1 0
111 SMCSGS-FS 103 * 01 24 35.990 -73 09 37.90           B2.5V: 1 0
112 SMCSGS-FS 104 * 01 24 36.0352127904 -73 25 03.907799868           B5V: 1 0
113 SMCSGS-FS 105 * 01 24 36.4627927848 -73 12 39.974230332           B2.5V: 1 0
114 2dFS 3696 * 01 24 36.8772118680 -73 09 21.370938984   16.13       B1.5V: 3 0
115 2MASS J01243798-7313561 * 01 24 37.9602051048 -73 13 56.031152772   14.97 15.22     B0V: 2 0
116 SMCSGS-FS 108 * 01 24 38.2077538920 -73 13 08.033631024           B2.5V: 1 0
117 SMCSGS-FS 109 * 01 24 38.2671502104 -73 19 41.300882544           B2.5V: 1 0
118 2MASS J01243893-7304502 * 01 24 38.9151644472 -73 04 50.068130232   15.80       B0-5(III)e 3 0
119 OGLE SMC-ECL- 6101 EB* 01 24 42.7092813600 -73 09 03.871747800   14.88 15.176   15.395 O9V 8 0
120 2dFS 3701 * 01 24 42.82 -73 13 31.7   16.37       B3V: 3 0
121 SMCSGS-FS 113 * 01 24 44.9470177488 -73 11 16.603600704           B7V: 1 0
122 DEM S 161 HII 01 24 45.4 -73 09 34           ~ 16 0
123 OGLE SMC-ECL- 6104 EB* 01 24 45.4055943192 -73 08 30.497081424     16.662   16.827 B2.5V: 4 0
124 2dFS 3702 * 01 24 45.9038520192 -73 18 34.412009076   16.18       B2.5V: 3 0
125 SMCSGS-FS 115 * 01 24 45.9533467824 -73 23 54.056898204           B1.5V: 1 0
126 2MASS J01244887-7315205 * 01 24 48.8207711400 -73 15 20.645287524   15.96       B1-5(III) 4 0
127 DEM S 162 HII 01 24 48.9 -73 27 34           ~ 5 0
128 OGLE SMC-ECL- 6105 EB* 01 24 49.0082225568 -73 10 25.798677312     16.479   16.645 B2.5V: 4 0
129 2MASS J01245041-7314402 * 01 24 50.4502919568 -73 14 39.680667456   15.24       B0V: 3 0
130 2MASS J01245045-7319062 * 01 24 50.4842643672 -73 19 05.949304788   15.58       B0.2V: 4 0
131 2MASS J01245126-7306002 * 01 24 51.2287798896 -73 06 00.209401560   14.62 14.85     O9.7V: 7 0
132 SMCSGS-FS 122 * 01 24 51.2695462032 -73 12 33.989566788           B2V: 1 0
133 SMCSGS-FS 123 * 01 24 51.9225926832 -73 20 18.285058896           B2IV: 1 0
134 2MASS J01245224-7323425 * 01 24 52.2682250016 -73 23 42.332922960   15.79       B0-5(III) 3 0
135 OGLE SMC-ECL- 6106 EB* 01 24 52.6136023776 -73 19 21.173093868   15.84 16.036   16.254 B0.5V: 6 0
136 SMCSGS-FS 126 * 01 24 53.3048476272 -73 18 28.836240444           B5V: 1 0
137 2MASS J01245430-7323548 * 01 24 54.3175601232 -73 23 54.893462064   15.79       B2.5V: 4 0
138 2MASS J01245444-7309110 * 01 24 54.4593235968 -73 09 11.072711484   15.15       O9V: 5 0
139 2MASS J01245526-7325440 * 01 24 55.2563225448 -73 25 44.563023876   16.15       B3V: 5 0
140 SMCSGS-FS 130 * 01 24 56.0484488112 -73 10 11.710117524           B2.5V: 1 0
141 SMCSGS-FS 131 * 01 24 56.8356636480 -73 19 40.313967888           B1.5V: 1 0
142 SMCSGS-FS 132 * 01 24 56.9256388368 -73 14 12.091713972           B2V: 1 0
143 SMCSGS-FS 133 * 01 24 57.6613258080 -73 11 04.487366220           B2V: 1 0
144 SMCSGS-FS 134 * 01 24 59.6250067776 -73 11 37.999741128           B2.5V: 1 0
145 2MASS J01250116-7324526 * 01 25 01.1997613776 -73 24 52.598890188   15.53       B2IV: 5 0
146 SMCSGS-FS 136 * 01 25 01.9786030488 -73 16 49.359460044           B1(IV)e: 1 0
147 2MASS J01250369-7317010 * 01 25 03.6902472672 -73 17 01.049217324   15.09 15.28     B1.5IV: 2 0
148 DEM S 163 HII 01 25 04.0 -73 16 41           ~ 9 0
149 OGLE SMC-ECL- 6113 EB* 01 25 05.5255317552 -73 08 50.459265312     16.988   17.117 B1.5V: 4 0
150 SMCSGS-FS 139 * 01 25 06.2870332152 -73 08 40.644955788           B2.5(V)e: 1 0
151 SMCSGS-FS 140 * 01 25 07.6117099848 -73 24 02.073416652           B2V: 1 0
152 OGLE SMC-ECL- 6115 EB* 01 25 08.4069414480 -73 24 51.993988560     15.795   15.986 B1.5V: 4 0
153 SMCSGS-FS 142 * 01 25 09.7946748528 -73 22 00.415578504           B2V: 1 0
154 2MASS J01250994-7316331 * 01 25 09.95 -73 16 33.1   13.81 14.04     O8V: 2 0
155 SMCSGS-FS 144 * 01 25 12.2890092648 -73 13 34.356975492           B2.5V: 1 0
156 SMCSGS-FS 145 * 01 25 12.9462540096 -73 15 31.046520492           B2V: 1 0
157 SMCSGS-FS 146 * 01 25 14.1731655024 -73 19 17.872166928           B2.5V: 1 0
158 SMCSGS-FS 147 * 01 25 14.6802434664 -73 23 51.806267160           B1V: 1 0
159 2MASS J01251635-7320583 * 01 25 16.3272022824 -73 20 58.440420996   16.45       B2V: 3 0
160 2dFS 3733 * 01 25 17.0248247160 -73 15 24.557988312   15.63       B0.5V: 4 0
161 SMCSGS-FS 150 * 01 25 18.3386633928 -73 13 42.527702136           B3V: 1 0
162 SMCSGS-FS 151 * 01 25 21.4447672944 -73 16 58.191277620           B1.5V: 1 0
163 SMCSGS-FS 152 * 01 25 21.8749620216 -73 21 41.317306092           B2.5V: 1 0
164 OGLE SMC-ECL- 6118 EB* 01 25 23.1571408608 -73 16 38.925778404     15.120   15.364 B2.5IV: 4 0
165 SMCSGS-FS 154 * 01 25 23.9597434920 -73 25 30.636822864           B2V: 1 0
166 2dFS 3739 * 01 25 24.5769487584 -73 15 17.596471680   15.88       B0.5V: 5 0
167 SMCSGS-FS 156 * 01 25 24.7528154544 -73 16 49.692532440           B0.2V: 1 0
168 SMCSGS-FS 157 * 01 25 26.870 -73 14 50.30           B2.5(V)e: 1 0
169 2MASS J01252747-7308071 * 01 25 27.4704469104 -73 08 07.097223300   14.73 14.81     B1-3(II)e 4 0
170 SMCSGS-FS 159 * 01 25 27.7132622712 -73 23 07.863687852           B0.7V: 1 0
171 SMCSGS-FS 160 * 01 25 30.3007794768 -73 23 20.229656676           B1IV: 1 0
172 SMCSGS-FS 161 * 01 25 32.7913136136 -73 13 51.840476004           B5IV: 1 0
173 2dFS 3744 * 01 25 33.6876133824 -73 07 15.696232788   16.57       B1V: 3 0
174 SMCSGS-FS 163 * 01 25 34.3912773360 -73 14 00.835678932           B2.5V: 1 0
175 SMCSGS-FS 164 * 01 25 35.5713183504 -73 16 15.940874892           B1V: 1 0
176 SMCSGS-FS 165 * 01 25 36.6848667792 -73 19 49.427881356           B5V: 1 0
177 SK 174 * 01 25 38.0871244536 -73 22 39.646345116   13.53 13.69 14.10   O8IV: 5 0
178 SK 173 * 01 25 38.2224140928 -73 07 39.333334008   13.54 13.72     B1-2(Ib)e? 8 0
179 2MASS J01253884-7307077 * 01 25 38.7772784664 -73 07 07.674692808   15.70       B1.5V: 5 0
180 2MASS J01253920-7309385 * 01 25 39.2337492672 -73 09 38.450061324   15.26       B1IV: 3 0
181 2MASS J01253964-7309112 * 01 25 39.6665900616 -73 09 11.228323068   15.57       B0.7V: 4 0
182 SMCSGS-FS 171 * 01 25 40.5288354456 -73 15 17.637133860           B1(V)e: 1 0
183 SMCSGS-FS 172 * 01 25 42.0764270952 -73 15 36.742219488           B0V: 1 0
184 OGLE SMC-ECL- 6126 EB* 01 25 42.0785589408 -73 13 44.732967924     16.724   16.903 B2.5V: 4 0
185 OGLE SMC-ECL- 6128 EB* 01 25 44.4709545096 -73 14 32.781827652   16.11 16.301   16.479 B2.5V: 9 0
186 2MASS J01254776-7308387 * 01 25 47.7624634104 -73 08 38.742926316   15.63       B9Ib: 5 0
187 2dFS 3756 * 01 25 50.220 -73 18 55.00   15.77       B7V: 4 0
188 SMCSGS-FS 177 * 01 25 51.3057652944 -73 14 17.889122148           B5(V)e: 1 0
189 LHA 115-N 89 HII 01 25 53.9 -73 22 41           ~ 22 0
190 SMCSGS-FS 178 * 01 25 55.6517597256 -73 17 36.044303352           B2V: 1 0
191 2MASS J01255598-7313485 * 01 25 55.9020470352 -73 13 48.960734412   15.75       B1-3(V) 4 0
192 SMCSGS-FS 180 * 01 25 58.5006256680 -73 20 49.056870660           B2V: 1 0
193 SMCSGS-FS 181 * 01 26 02.6873149128 -73 22 57.025818372           B2V: 1 0
194 SMCSGS-FS 182 * 01 26 03.7151938560 -73 08 57.842893896           B1V: 1 0
195 SMCSGS-FS 183 * 01 26 04.2919095720 -73 19 44.339920104           B5(V)e: 1 0
196 2MASS J01260553-7319050 * 01 26 05.5539383712 -73 19 05.454614640   16.20       B2.5V: 3 0
197 SMCSGS-FS 185 * 01 26 06.0344602752 -73 07 18.298083828           B0.7V: 1 0
198 SMCSGS-FS 186 * 01 26 06.4715034168 -73 19 25.317453792           B0.7V: 1 0
199 2MASS J01261432-7318346 * 01 26 14.3227507056 -73 18 34.639135632   14.79 15.00     B0.5IV: 2 0
200 SMCSGS-FS 188 * 01 26 16.5331944624 -73 16 14.942410176           B5V: 1 0
201 2MASS J01261835-7317444 * 01 26 18.3548741952 -73 17 44.336098068   14.88       B1-5(II) 3 0
202 2MASS J01262438-7317360 * 01 26 24.3735157344 -73 17 35.960281872   13.77 13.96     B0.7IV: 2 0
203 2MASS J01262649-7317317 * 01 26 26.5181212464 -73 17 31.676731620   15.11 15.22     B0.5V: 2 0
204 2MASS J01262823-7311248 * 01 26 28.2349984800 -73 11 25.735757856   15.49       B1.5IV: 4 0
205 SMCSGS-FS 193 * 01 26 28.9978713792 -73 12 20.980194012           B0.7V: 1 0
206 SMCSGS-FS 194 * 01 26 32.0548111296 -73 13 26.403212424           B5V: 1 0
207 2MASS J01263529-7315162 * 01 26 35.2855868400 -73 15 16.280587908   14.12 14.37     O9.5III 8 0
208 2MASS J01264567-7315553 * 01 26 45.6331672008 -73 15 54.900581040   15.46       B3IV: 3 0
209 SMCSGS-FS 197 * 01 26 49.8105416496 -73 12 55.110711636           B1.5IV: 1 0
210 2MASS J01265689-7330542 * 01 26 56.9102035824 -73 30 54.101893068   15.15 15.30     B1V: 7 0
211 2MASS J01270000-7314405 * 01 27 00.0053958384 -73 14 40.612085376   15.73       B1V: 5 0
212 DEM S 165 HII 01 27 03.3 -73 08 32           ~ 7 0
213 OGLE SMC-ECL- 8038 EB* 01 27 06.2180245080 -73 18 03.983774616     16.103   16.218 B2V: 3 0
214 2MASS J01271097-7318223 * 01 27 11.0019800304 -73 18 22.508775360   15.75       B0.7V: 4 0
215 2MASS J01273691-7333474 * 01 27 36.8246982048 -73 33 47.866294764   15.64       B1V: 4 0
216 SXP 1062 HXB 01 27 45.9424650912 -73 32 56.376382920   14.32 14.36     B0.5(III)e 70 1
217 2MASS J01275722-7338099 * 01 27 56.9822023416 -73 38 10.075794540   16.06       B1V: 3 0
218 SMCSGS-FS 205 * 01 27 57.2167683600 -73 26 27.933047340           B2.5V: 1 0
219 2MASS J01280783-7330538 * 01 28 07.7787290568 -73 30 53.967459204   15.74       B3IV: 4 0
220 2MASS J01281201-7330235 * 01 28 11.9603613504 -73 30 23.491975284   15.64       B3IV: 4 0
221 2MASS J01281304-7336307 * 01 28 13.0161017712 -73 36 30.740972616   15.98       B2.5V: 3 0
222 2dFS 3849 * 01 28 14.4795654456 -73 33 16.821358236   16.29       B1.5V: 4 0
223 2MASS J01283425-7332457 * 01 28 34.2713228136 -73 32 45.888822024   15.79       B0.5III: 3 0
224 SMCSGS-FS 211 * 01 28 41.5951896600 -73 33 35.037404388           B5V: 1 0
225 2dFS 3875 * 01 28 45.5009437584 -73 24 34.986708684   16.45       B2.5V: 4 0
226 2dFS 3876 * 01 28 46.1424846096 -73 17 41.652276828   16.49       B0-5(V) 4 0
227 SMCSGS-FS 214 * 01 28 47.2177737768 -73 28 33.207131928           B1(V)e: 1 0
228 2MASS J01284765-7318231 * 01 28 47.6210388000 -73 18 22.929849180   14.80 15.03     O9.7IV: 7 0
229 2MASS J01284978-7322548 * 01 28 49.7796477600 -73 22 54.779164464   15.26       B0.7IV: 4 0
230 2MASS J01285654-7323118 * 01 28 56.5347298200 -73 23 11.872400712   15.10 15.27     B1IV: 7 0
231 SMCSGS-FS 218 * 01 28 56.9341644624 -73 24 06.819410772           B3V: 1 0
232 NAME SMC 1 Supergiant Shell HII 01 29 -73.3           ~ 16 0
233 2MASS J01290413-7322373 s*b 01 29 04.1316460320 -73 22 37.247563236   13.80       B9Ia: 4 0
234 2dFS 3894 * 01 29 06.9043264440 -73 17 15.164834280   16.08       B1.5V: 4 0
235 2dFS 3896 * 01 29 09.7049193168 -73 15 01.344541212   16.53       B2.5V: 3 0
236 DEM S 167 HII 01 29 09.9 -73 24 50           ~ 15 0
237 2MASS J01291073-7330172 * 01 29 10.7546537976 -73 30 17.305197696   15.80       B0.5V: 5 0
238 SMCSGS-FS 223 * 01 29 11.0853905856 -73 30 39.620890908           B0.5(IV)e: 1 0
239 2MASS J01291256-7317267 * 01 29 12.5842476240 -73 17 26.657983500   14.28 14.39     B1-3(II)e 7 0
240 SMCSGS-FS 225 * 01 29 13.3406468208 -73 32 03.586982640           B2(V)e: 1 0
241 2dFS 3902 * 01 29 15.2379441816 -73 14 04.565816340   16.24       B0-5(IV)e 3 0
242 SMCSGS-FS 227 * 01 29 21.1291358880 -73 33 05.997476484           B2V: 1 0
243 SMCSGS-FS 228 * 01 29 23.3368405152 -73 34 42.772884996           B2.5V: 1 0
244 2dFS 3905 * 01 29 23.8140718800 -73 19 45.437670516   16.35       B1.5V: 5 0
245 2MASS J01292408-7329418 * 01 29 24.0730481784 -73 29 41.634474684   14.11 14.28     B1IV: 7 0
246 SK 183 * 01 29 24.5481468144 -73 33 16.345873296   13.57 13.80     O3V((f*))z+OB 14 0
247 DEM S 166 HII 01 29 26.8 -73 32 38           ~ 14 0
248 SMCSGS-FS 232 * 01 29 27.5581654392 -73 32 01.491194544           B0.5V: 1 0
249 Cl* NGC 602 HTCP 7 * 01 29 27.7371284136 -73 32 59.627011992   15.29 15.40     B1 2 0
250 2MASS J01292821-7326063 * 01 29 28.2321758328 -73 26 05.842976028   15.71       B3IV: 5 0
251 SMCSGS-FS 235 * 01 29 28.2671858568 -73 31 57.579587040           B2(IV)e: 1 0
252 Bruck 164 Cl* 01 29 30 -73 32.0           ~ 13 0
253 SMCSGS-FS 236 * 01 29 30.0576589056 -73 33 27.356949468           B2.5V: 1 0
254 LHA 115-N 90 HII 01 29 30.15 -73 33 10.5           ~ 58 1
255 Cl* NGC 602 HTCP 1 * 01 29 30.2790242184 -73 33 39.111949908   15.35 15.60     B0.7V: 2 0
256 Cl* NGC 602 HTCP 2 * 01 29 31.0011840312 -73 33 43.233436368   14.42 14.68     O8.5V: 2 0
257 SMCSGS-FS 239 * 01 29 31.3736837640 -73 33 42.479677152           O9V: 1 0
258 NGC 602 Cl* 01 29 32.133 -73 33 38.13     13.018     ~ 83 1
259 Cl* NGC 602 HTCP 9 * 01 29 32.9072327520 -73 34 11.094597120   15.93 16.09     B2V: 2 0
260 Cl* NGC 602 HTCP 5 * 01 29 33.2759361360 -73 33 44.633246832   13.92 14.24     O7V: 2 0
261 Cl Lindsay 105 Cl* 01 29 34.82 -73 33 29.4           ~ 11 0
262 SMCSGS-FS 242 * 01 29 35.490 -73 33 29.38           B1.5V: 1 0
263 SMCSGS-FS 243 * 01 29 35.4989251872 -73 33 30.790307736           B2.5V: 1 0
264 Cl* NGC 602 HTCP 10 * 01 29 36.8689451472 -73 34 10.486980264     16.6     B2V: 2 0
265 SMCSGS-FS 245 * 01 29 43.0119478320 -73 34 49.979502804           B1.5(IV)e: 1 0
266 OGLE SMC-ECL- 8076 EB* 01 29 45.4217202048 -73 25 53.357493072     15.499   15.700 B1V: 3 0
267 SMCSGS-FS 247 * 01 29 46.0611291144 -73 25 10.759782972           B5V: 1 0
268 SMCSGS-FS 248 * 01 29 48.6319997304 -73 33 35.385141888           B0.2V: 1 0
269 2MASS J01295013-7323352 * 01 29 50.1134307144 -73 23 35.164403412   14.57 14.63     B2(III)e: 2 0
270 SMCSGS-FS 250 * 01 29 50.8855570680 -73 29 09.225072240           B2V: 1 0
271 2dFS 3917 * 01 29 51.0716334264 -73 24 58.966839108   16.45       B1.5V: 5 0
272 SMCSGS-FS 252 s*b 01 29 51.1719331944 -73 22 39.236768364           B9Ia: 1 0
273 SMCSGS-FS 253 * 01 29 52.6735691736 -73 25 19.008853140           B1.5V: 1 0
274 2dFS 3918 * 01 29 53.3583272808 -73 35 18.128080644   15.02       B1.5V: 3 0
275 2dFS 3921 * 01 29 57.3487655760 -73 19 27.762582684   16.46       B2V: 5 0
276 2dFS 3923 * 01 29 58.1406624552 -73 22 16.614092964   16.14       B1.5V: 4 0
277 SMCSGS-FS 257 * 01 30 01.0410368952 -73 24 08.108580492           B0.5V: 1 0
278 SMCSGS-FS 258 * 01 30 01.5743031360 -73 24 02.066818428           B0.5(III)e: 1 0
279 SMCSGS-FS 259 * 01 30 01.7095399440 -73 25 22.238051916           B0.7V: 1 0
280 2MASS J01300243-7333081 * 01 30 02.4321821160 -73 33 07.887568428   15.63       B0.5V: 3 0
281 SMCSGS-FS 261 * 01 30 03.6842517024 -73 26 24.503548776           B0.7V: 1 0
282 2MASS J01300795-7315047 * 01 30 07.9790729712 -73 15 04.674960576   15.49       B1-5(II)e 3 0
283 2MASS J01301167-7324109 * 01 30 11.6806257216 -73 24 10.806636168   15.21 15.41     B0.2V: 5 0
284 2MASS J01301308-7335406 * 01 30 13.0882306200 -73 35 40.464631032   15.38 13.0     B2.5III: 4 0
285 2MASS J01301331-7325455 * 01 30 13.2967844928 -73 25 45.476450040   14.41 14.64     B0.5IV: 6 0
286 OGLE SMC738.14.000021 EB* 01 30 14.1987467736 -73 25 34.493298996   14.89 15.126   15.300 B1V: 4 0
287 SMCSGS-FS 267 * 01 30 16.0842056904 -73 22 06.253186692           B2V: 1 0
288 2dFS 3933 * 01 30 16.0907351880 -73 21 26.072425908   16.49       B2V: 5 0
289 2MASS J01301662-7320509 * 01 30 16.6290827208 -73 20 51.089109360   15.16 15.45     O8V 7 0
290 SMCSGS-FS 270 * 01 30 17.1610422240 -73 26 45.728242008           B0.7V: 1 0
291 SMCSGS-FS 271 * 01 30 18.4983050736 -73 25 46.974081720           B3(IV)e: 1 0
292 2MASS J01301962-7323018 * 01 30 19.6076633904 -73 23 01.962443760   16.15       B2.5IV: 3 0
293 SMCSGS-FS 273 * 01 30 23.3124543240 -73 26 24.989904960           B1.5V: 1 0
294 SMCSGS-FS 274 * 01 30 24.7715645448 -73 32 18.818917368           B0.5V: 1 0
295 SMCSGS-FS 275 * 01 30 25.1458898280 -73 27 49.392983448           B0.7V: 1 0
296 SMCSGS-FS 276 * 01 30 26.1170891952 -73 25 33.143607984           B0.5V: 1 0
297 2MASS J01302651-7339375 * 01 30 26.4909281496 -73 39 37.260828504   15.41       B1IV: 3 0
298 2MASS J01302748-7326016 * 01 30 27.4714263048 -73 26 01.552106580   14.38       B1IV: 4 0
299 2MASS J01302913-7319394 * 01 30 29.0763558696 -73 19 39.447051528   15.72       B2V: 4 0
300 SMCSGS-FS 280 * 01 30 29.9839848144 -73 26 20.822672832           B1V: 1 0
301 2MASS J01303050-7325523 * 01 30 30.4976812920 -73 25 52.393188504   15.91       B0.2V: 3 0
302 2MASS J01303096-7330344 * 01 30 30.9172079688 -73 30 33.486493500   16.13       B1-5(III) 3 0
303 SMCSGS-FS 283 * 01 30 33.8234382456 -73 22 19.790562540           B0.5(III)e: 1 0
304 2MASS J01303713-7325143 * 01 30 37.1819552304 -73 25 14.372738616   14.76 14.99     B1.5IV: 6 0
305 2dFS 3949 * 01 30 39.970 -73 19 32.55   16.33       B1.5V: 3 0
306 2MASS J01304078-7321362 * 01 30 40.7915272656 -73 21 36.062783964   15.75       B7IV: 3 0
307 2MASS J01304308-7325041 * 01 30 43.1041712424 -73 25 04.123554384   15.07 15.25     O7V 5 0
308 SK 187 * 01 30 50.2525498272 -73 22 58.905756120   12.99 13.18     O8.5III: 15 0
309 SMCSGS-FS 289 * 01 30 52.0191779592 -73 32 15.128169468           B1.5(IV)e: 1 0
310 2dFS 3957 * 01 30 54.7169160024 -73 27 07.081195428   16.62       B1V: 4 0
311 SMCSGS-FS 291 * 01 30 59.0727089976 -73 24 55.208691216           B1V: 1 0
312 [W64] NGC 602c 9 * 01 30 59.4649699800 -73 25 11.631742824   13.94 14.17 14.49   O7V 4 0
313 SMCSGS-FS 293 * 01 31 02.0605621632 -73 35 30.256785816           B2V: 1 0
314 LIN 547 WR* 01 31 04.1367366432 -73 25 03.784411524   12.75 12.90     WO4+O4V 92 0
315 SMCSGS-FS 294 * 01 31 04.3636534224 -73 24 29.558675052           B1V: 1 0
316 [W64] NGC 602c 21 * 01 31 04.7993222184 -73 24 56.785855716   16.02 16.26     B2V 3 0
317 2dFS 3961 * 01 31 05.2523745192 -73 26 34.602165492   16.12       B5V: 4 0
318 2dFS 3962 * 01 31 06.5016232968 -73 15 55.109283444   16.33       B1.5V: 4 0
319 [W64] NGC 602c 23 * 01 31 06.7995104760 -73 24 46.504743588   14.60 15.67     O9.5V 7 0
320 2dFS 3964 * 01 31 06.8897999016 -73 26 01.542564780   16.19       B1.5V: 3 0
321 SMCSGS-FS 300 * 01 31 08.4312628632 -73 28 17.852808180           B1.5V: 1 0
322 SMCSGS-FS 301 * 01 31 08.4728441352 -73 24 40.866356160           B1.5V: 1 0
323 [W64] NGC 602c 30 * 01 31 08.5040816784 -73 24 57.759903648   14.96 15.21 15.47   B0V: 4 0
324 Cl Lindsay 107 As* 01 31 08.83 -73 24 51.1           ~ 22 0
325 OGLE SMC-ECL- 8094 EB* 01 31 10.0212557928 -73 25 04.943747316     16.681   16.816 B1.5V: 3 0
326 [W64] NGC 602c 35 * 01 31 11.2200966696 -73 25 01.443408564   15.28 15.52     B0.5V 3 0
327 SMCSGS-FS 305 * 01 31 14.0047647048 -73 24 24.642120780           B1.5V: 1 0
328 [W64] NGC 602c 40 * 01 31 14.1404023608 -73 24 38.176543980   15.38 15.57 15.98   B0V: 3 0
329 SMCSGS-FS 307 * 01 31 15.3351230880 -73 24 59.175907236           B0.5V: 1 0
330 SMCSGS-FS 308 * 01 31 20.1978972336 -73 19 52.766556312           B5V: 1 0
331 2dFS 3973 * 01 31 25.2442952280 -73 29 54.972550644   16.64       B2.5V: 3 0
332 SK 190 s*b 01 31 27.9835584432 -73 22 14.221677612   13.37 13.59     O7.5(f)np 15 0
333 SMCSGS-FS 311 * 01 31 28.3274260032 -73 25 04.120785840           B1V: 1 0
334 2MASS J01313004-7321380 * 01 31 30.0432832368 -73 21 37.972058220   14.77 15.02     O9.5V 5 0
335 2dFS 3978 * 01 31 33.1765277472 -73 24 26.800533324   16.20       B2.5V: 3 0
336 OGLE SMC-ECL- 8102 EB* 01 31 42.5571571056 -73 35 04.405971084     16.761   16.818 B2V: 3 0
337 2MASS J01315497-7327234 * 01 31 54.9584072088 -73 27 23.505357420   14.52 14.61     O9.7(III)e: 5 0
338 2dFS 3986 * 01 31 57.3322533312 -73 33 08.867011572   16.40       B0-5(V) 3 0
339 2MASS J01315767-7316177 * 01 31 57.6792403032 -73 16 17.983144128   15.98       B0V: 4 0
340 SMCSGS-FS 318 * 01 31 58.3079058072 -73 24 05.198485572           B2V: 1 0
341 SMCSGS-FS 319 * 01 32 03.2689156512 -73 37 03.711553932           B1.5V: 1 0
342 SMCSGS-FS 320 * 01 32 07.7612458200 -73 30 57.307645656           B2V: 1 0
343 M 33 GiG 01 33 50.8965749232 +30 39 36.630403128 6.17 6.27 5.72     ~ 5524 1
344 NAME Magellanic Clouds GrG 03 00 -71.0           ~ 6371 1
345 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 16153 1
346 LHA 120-N 206A HII 05 31 15.2 -71 03 58           ~ 103 2
347 RMC 136 Cl* 05 38 42.396 -69 06 03.36           ~ 1872 1

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2022.08.10-03:25:59

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