2015MNRAS.446.3797H

Query : 2015MNRAS.446.3797H

2015MNRAS.446.3797H - Mon. Not. R. Astron. Soc., 446, 3797-3819 (2015/February-1)

Reddening, distance, and stellar content of the young open cluster Westerlund 2.

HUR H., PARK B.-G., SUNG H., BESSELL M.S., LIM B., CHUN M.-Y. and SOHN S.T.

Abstract (from CDS):

We present deep UBVIC photometric data of the young open cluster Westerlund 2. An abnormal reddening law of RV, cl = 4.14±0.08 was found for the highly reddened early-type members (E(B-V)\geqq 1.45), whereas a fairly normal reddening law of RV, fg = 3.33±0.03 was confirmed for the foreground early-type stars (E(B - V)fg < 1.05). The distance modulus was determined from zero-age main-sequence fitting to the reddening-corrected colour-magnitude diagram of the early-type members to be V0 - MV = 13.9±0.14 (random error) _-0.1^+0.4 (the upper limit of systematic error) mag (d = 6.0 ±0.4_-0.3^+1.2 kpc). To obtain the initial mass function, pre-main-sequence (PMS) stars were selected by identifying the optical counterparts of Chandra X-ray sources and mid-infrared emission stars from the Spitzer GLIMPSE (Galactic Legacy Infrared Mid-Plane Survey Extraordinaire) source catalogue. The initial mass function shows a shallow slope of Γ = -1.1±0.1 down to logm = 0.7. The total mass of Westerlund 2 is estimated to be at least 7400M_☉. The age of Westerlund 2 from the main-sequence turn-on and PMS stars is estimated to be ≲ 1.5 Myr. We confirmed the existence of a clump of PMS stars located ∼ 1 arcmin north of the core of Westerlund 2, but we could not find any clear evidence for an age difference between the core and the northern clump.

Journal keyword(s): stars: luminosity function, mass function - stars: pre-main-sequence - open clusters and associations: individual: Westerlund 2

VizieR on-line data: <Available at CDS (J/MNRAS/446/3797): table2.dat table6.dat>

Simbad objects: 320

Full paper

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Number of rows : 320

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	IC 1848	OpC	02 51 25.2	+60 25 08		6.87	6.5			~	491	2
2	NGC 1893	OpC	05 22 53.8	+33 26 38						~	261	0
3	NAME LMC	G	05 23 34.6	-69 45 22			0.4			~	17450	0
4	RMC 136	Cl*	05 38 42.396	-69 06 03.36		5.81	5.40			~	2019	2
5	EM* LkHA 25	Ae*	06 40 44.6376365304	+09 48 02.151653868	12.745	13.03	18.85	12.545	12.386	B4Ve	145	0
6	NGC 2264	OpC	06 40 52.1	+09 52 37						~	1793	0
7	SA 98-	reg	06 52 04.1	-00 23 58						~	176	0
8	SA 101-	reg	09 57 28.2	-00 19 39						~	74	0
9	NAME Car Arm	PoG	10 00	-60.0						~	439	1
10	2MASS J10224886-5741476	Y*?	10 22 48.8577084840	-57 41 47.704772868			13.400		11.866	~	1	0
11	2MASS J10224905-5746513	Y*?	10 22 49.0577791296	-57 46 51.322447308		21.936	19.300		15.558	~	1	0
12	SSTGLMC G284.1697-00.4697	Y*?	10 22 49.3887725232	-57 49 22.524129624	13.38	13.184			19.034	~	1	0
13	2MASS J10225101-5742214	Y*?	10 22 51.0118397832	-57 42 21.454363044	17.9	16.694	15.347		13.859	~	1	0
14	HD 302753	Y*?	10 22 51.1618521600	-57 41 48.498201096	17.9	11.068	10.981	11.076	10.889	B9	4	0
15	SSTGLMC G284.1103-00.3674	Y*?	10 22 51.56	-57 42 17.1	13.38	13.184			21.531	~	1	0
16	2MASS J10225191-5746495	Y*?	10 22 51.9147221256	-57 46 49.548492012	14.812	14.778	14.210		13.517	~	1	0
17	2MASS J10225219-5745269	Y*?	10 22 52.1880124200	-57 45 26.952958548	14.596	14.463	13.794		12.986	~	1	0
18	SSTGLMC G284.1142-00.3702	Y*?	10 22 52.3718819376	-57 42 32.994321552	13.38	13.184			19.231	~	1	0
19	2MASS J10225238-5745219	Y*?	10 22 52.3807129368	-57 45 21.948976584	14.047	13.985	13.389		12.699	~	1	0
20	2MASS J10225239-5747573	Y*?	10 22 52.3858671720	-57 47 57.342991452	14.047	13.985	23.737		18.498	~	1	0
21	2MASS J10225269-5747049	Y*?	10 22 52.6829254392	-57 47 04.932087936	20.299	19.553	18.072		15.913	~	1	0
22	2MASS J10225332-5745284	Y*?	10 22 53.3246347104	-57 45 28.481104800	14.091	14.087	13.628		13.048	~	1	0
23	SSTGLMC G284.1582-00.4348	Y*?	10 22 53.45	-57 47 14.4	13.38	13.184			22.072	~	1	0
24	2MASS J10225348-5744140	Y*?	10 22 53.4736009560	-57 44 14.110978344	18.966	17.814	16.431		14.832	~	1	0
25	SSTGLMC G284.1287-00.3864	Y*?	10 22 53.96	-57 43 50.1	13.38	13.184			21.886	~	1	0
26	SSTGLMC G284.1275-00.3795	Y*?	10 22 55.18	-57 43 27.0	13.38	13.184			22.262	~	1	0
27	SSTGLMC G284.1751-00.4529	Y*?	10 22 55.48	-57 48 42.0	13.38	13.184			21.844	~	1	0
28	2MASS J10225582-5748511	Y*?	10 22 55.8150775560	-57 48 51.185891844	13.484	13.213	12.818		12.334	~	1	0
29	SSTGLMC G284.1239-00.3701	Y*?	10 22 56.0586693552	-57 42 51.368244624	13.484	13.213	22.716		17.731	~	1	0
30	2MASS J10225628-5748165	Y*?	10 22 56.2791973056	-57 48 16.550862516	19.586	18.051	16.124		13.778	~	1	0
31	2MASS J10225638-5750216	Y*?	10 22 56.3841750288	-57 50 21.620289912	19.586	23.071	20.450		17.176	~	1	0
32	2MASS J10225639-5749105	Y*?	10 22 56.3842096896	-57 49 10.664894640	19.586	18.051	23.597		18.858	~	1	0
33	SSTGLMC G284.1687-00.4389	Y*?	10 22 56.45	-57 47 47.2	13.38	13.184			19.993	~	1	0
34	SSTGLMC G284.1310-00.3780	Y*?	10 22 56.8415145264	-57 43 29.234215308	13.38	13.184			19.873	~	1	0
35	2MASS J10225701-5743441	Y*?	10 22 57.0147170184	-57 43 44.113105128	19.586	23.071	13.166		11.846	~	1	0
36	2MASS J10225738-5741496	Y*?	10 22 57.3745420008	-57 41 49.666324308	15.156	14.575	13.694		12.717	~	1	0
37	SSTGLMC G284.1649-00.4281	Y*?	10 22 57.61	-57 47 06.8	13.38	13.184			20.865	~	1	0
38	2MASS J10225764-5742220	Y*?	10 22 57.6393317592	-57 42 22.042690596	14.998	14.85	14.221		13.465	~	1	0
39	2MASS J10225765-5746109	Y*?	10 22 57.6479325816	-57 46 10.930963908	14.998	14.85	22.266		18.058	~	1	0
40	2MASS J10225766-5750129	Y*?	10 22 57.6602226384	-57 50 12.987227076	14.998	14.85	23.746		19.203	~	1	0
41	2MASS J10225793-5748419	Y*?	10 22 57.9236540544	-57 48 42.003838692	14.998	14.85	22.497		17.808	~	1	0
42	2MASS J10225800-5748079	Y*?	10 22 58.0013144352	-57 48 07.976102544	15.189	15.001	14.253		13.373	~	1	0
43	2MASS J10225845-5742376	Y*?	10 22 58.4460598368	-57 42 37.679173596	17.637	16.553	15.396		13.964	~	2	0
44	2MASS J10225892-5745263	Y*?	10 22 58.9193985240	-57 45 26.364732876	17.637	21.831	19.362		16.238	~	1	0
45	2MASS J10225968-5748585	Y*?	10 22 59.6749600728	-57 48 58.572129564	17.637	20.176	17.618		14.479	~	1	0
46	SSTGLMC G284.1643-00.4154	Y*?	10 23 00.4641990984	-57 46 27.435651780	17.637	20.176	24.019		18.145	~	1	0
47	2MASS J10230093-5744304	Y*?	10 23 00.9303215064	-57 44 30.488858664	19.047	16.699	14.730		12.273	~	1	0
48	SSTGLMC G284.1939-00.4570	Y*?	10 23 01.6417103256	-57 49 30.712930752	13.38	13.184			18.099	~	1	0
49	2MASS J10230198-5747267	Y*?	10 23 01.9838433336	-57 47 26.691768780	19.047	23.782	21.147		17.574	~	1	0
50	CPD-57 3103	Y*?	10 23 01.9979222016	-57 43 54.063147936	19.047	11.463	11.315		11.008	B5/7	2	0
51	2MASS J10230219-5743024	Y*?	10 23 02.1813040680	-57 43 02.415557676	19.047	11.463	19.493		16.546	~	1	0
52	2MASS J10230260-5743054	Y*?	10 23 02.5952098128	-57 43 05.417934096	13.195	12.948	12.647		12.240	~	1	0
53	SSTGLMC G284.1909-00.4469	Y*?	10 23 02.94	-57 48 54.3	13.38	13.184			21.389	~	1	0
54	2MASS J10230297-5747399	Y*?	10 23 02.9684788992	-57 47 39.926323500	13.195	12.948	21.844		17.321	~	1	0
55	2MASS J10230298-5745322	Y*?	10 23 02.9856926616	-57 45 32.249870532	13.195	12.948	22.462		18.383	~	1	0
56	2MASS J10230405-5743297	Y*?	10 23 04.0565541840	-57 43 29.755408152	12.389	11.96	11.899		11.540	~	1	0
57	2MASS J10230450-5748544	Y*?	10 23 04.5006836568	-57 48 54.481865580	14.075	13.895	13.535		13.130	~	1	0
58	2MASS J10230512-5747162	Y*?	10 23 05.122	-57 47 16.29	14.075	21.45	19.241		16.371	~	1	0
59	SSTGLMC G284.1899-00.4352	Y*?	10 23 05.39	-57 48 16.8	13.38	13.184			20.341	~	1	0
60	SSTGLMC G284.1326-00.3441	Y*?	10 23 05.74	-57 41 49.2	13.38	13.184			20.571	~	1	0
61	2MASS J10230578-5744045	Y*?	10 23 05.790	-57 44 04.56	14.075	20.596	18.486		15.797	~	1	0
62	SSTGLMC G284.1369-00.3488	Y*?	10 23 06.1082873832	-57 42 11.994897852	13.38	13.184			19.717	~	1	0
63	2MASS J10230611-5742195	Y*?	10 23 06.1089238872	-57 42 19.573271892	14.075	20.596	13.197		11.506	~	1	0
64	2MASS J10230616-5742251	Y*?	10 23 06.1612389432	-57 42 25.232841432	14.075	18.316	16.465		14.281	~	1	0
65	2MASS J10230642-5743292	Y*?	10 23 06.4208194752	-57 43 29.195736348	16.14	15.314	14.316		13.156	~	1	0
66	2MASS J10230734-5745220	Y*?	10 23 07.3348682232	-57 45 22.014923148	15.803	15.226	14.265		13.213	~	1	0
67	2MASS J10230828-5749081	Y*?	10 23 08.2821982896	-57 49 08.190969672	15.803	19.181	17.227		14.828	~	1	0
68	2MASS J10230867-5742575	Y*?	10 23 08.6643889464	-57 42 57.519245196	17.07	16.898	15.787		14.294	~	1	0
69	2MASS J10230892-5748435	Y*?	10 23 08.9172322968	-57 48 43.521697224	17.539	16.545	15.083		13.343	~	1	0
70	2MASS J10230892-5744017	Y*?	10 23 08.9208911808	-57 44 01.791031704	17.07	23.894	20.991		17.051	~	1	0
71	CXOU J102309.8-574942	LP?	10 23 09.7173119976	-57 49 43.122460224	17.539	20.639	18.494	16.8	15.602	~	3	0
72	2MASS J10231016-5747391	Y*?	10 23 10.1601648816	-57 47 39.187456872	15.913	15.019	13.822			~	1	0
73	2MASS J10231043-5742064	Y*?	10 23 10.4345868576	-57 42 06.434642772	15.913	19.616	17.800		15.376	~	1	0
74	2MASS J10231064-5748152	Y*?	10 23 10.6401816120	-57 48 15.278443560	15.913	19.616	12.805		11.593	~	1	0
75	SSTGLMC G284.1896-00.4114	Y*?	10 23 11.06	-57 47 04.0	15.913	19.616	22.956		18.822	~	1	0
76	HD 302754	Y*?	10 23 11.0828594328	-57 47 52.275303348	15.913	10.79	10.589	10.64	10.309	B8	13	0
77	2MASS J10231153-5743155	Y*?	10 23 11.5310160456	-57 43 15.515674932	15.913	24.336	21.883		18.197	~	1	0
78	SSTGLMC G284.1926-00.4123	Y*?	10 23 12.0532420080	-57 47 12.822828792	17.398	17.079	16.303		15.434	~	1	0
79	2MASS J10231209-5744398	Y*?	10 23 12.0893350776	-57 44 39.821353008	17.398	21.88	19.377		16.240	~	1	0
80	2MASS J10231260-5745385	Y*?	10 23 12.5945447280	-57 45 38.517579684	17.398	20.019	18.000		15.528	~	1	0
81	2MASS J10231340-5742473	Y*?	10 23 13.4077450704	-57 42 47.334676896	18.477	17.028	15.613		14.063	~	1	0
82	2MASS J10231371-5741383	Y*?	10 23 13.7219562744	-57 41 38.281670952	18.477	17.028	23.046		18.480	~	1	0
83	SSTGLMC G284.1708-00.3692	Y*?	10 23 13.97	-57 44 19.5	13.38	13.184			21.162	~	1	0
84	SSTGLMC G284.1827-00.3878	Y*?	10 23 14.13	-57 45 39.0	13.38	13.184			20.040	~	1	0
85	2MASS J10231438-5746172	Y*?	10 23 14.3767286520	-57 46 17.253141420	18.477	18.285	16.048		13.379	~	1	0
86	SSTGLMC G284.2136-00.4349	Y*?	10 23 14.49	-57 49 01.6	13.38	13.184			22.560	~	1	0
87	2MASS J10231470-5743203	Y*?	10 23 14.7126840264	-57 43 20.326606824	16.414	15.254	14.047		12.763	~	1	0
88	2MASS J10231512-5748258	Y*?	10 23 15.1145064720	-57 48 25.849473408	17.154	15.909	14.486		12.893	~	1	0
89	SSTGLMC G284.2065-00.4199	Y*?	10 23 15.40	-57 48 02.2	13.38	13.184			21.253	~	1	0
90	SSTGLMC G284.1902-00.3907	Y*?	10 23 16.25	-57 46 01.9	13.38	13.184			20.697	~	1	0
91	2MASS J10231661-5748506	Y*?	10 23 16.6138089720	-57 48 50.689838268	17.154	15.909	22.992		18.321	~	1	0
92	SSTGLMC G284.2310-00.4528	Y*?	10 23 16.7719769928	-57 50 29.615792352	13.38	13.184			19.331	~	1	0
93	2MASS J10231688-5741564	Y*?	10 23 16.8853232232	-57 41 56.397456276	14.674	14.49	14.012		13.410	~	1	0
94	2MASS J10231854-5745306	Y*?	10 23 18.5469699408	-57 45 30.652691544	14.674	14.49	12.408		11.089	~	1	0
95	2MASS J10231879-5749096	Y*?	10 23 18.797	-57 49 09.66	14.674	14.49	21.972		17.140	~	1	0
96	2MASS J10231891-5741585	Y*?	10 23 18.9165767736	-57 41 58.567986636	14.674	14.49	12.429		10.931	~	1	0
97	2MASS J10231903-5741460	Y*?	10 23 19.0383784680	-57 41 46.063747896	14.674	14.49	22.354		17.958	~	1	0
98	2MASS J10231923-5749035	Y*?	10 23 19.2235427760	-57 49 03.573826104	17.076	15.986	14.552		12.892	~	1	0
99	2MASS J10231988-5748290	Y*?	10 23 19.8853076400	-57 48 29.051056080	17.076	20.548	18.373		15.650	~	1	0
100	2MASS J10231994-5743431	LP?	10 23 19.9479246864	-57 43 43.114881756	17.076	20.548	22.204		16.690	~	2	0
101	2MASS J10232006-5742398	Y*?	10 23 20.0643400584	-57 42 39.908981448	17.076	20.548	23.218		18.894	~	1	0
102	2MASS J10232020-5742300	Y*?	10 23 20.2082864280	-57 42 30.067253496	17.076	20.237	18.124		15.534	~	1	0
103	2MASS J10232060-5746180	Y*?	10 23 20.6040013320	-57 46 18.071415804	17.076	11.92	11.762		11.708	~	1	0
104	2MASS J10232061-5750235	Y*?	10 23 20.6068405464	-57 50 23.527541040	17.076	20.372	17.837		14.690	~	1	0
105	2MASS J10232075-5748554	Y*?	10 23 20.7470536536	-57 48 55.439756460	17.076	18.304	15.867		12.898	~	1	0
106	2MASS J10232101-5749308	Y*?	10 23 21.0046502064	-57 49 30.827959284	18.583	16.933	15.210		13.204	~	1	0
107	2MASS J10232104-5749444	Y*?	10 23 21.0404873208	-57 49 44.404148712	19.755	18.828	17.362		15.386	~	1	0
108	2MASS J10232132-5749048	Y*?	10 23 21.3136654152	-57 49 04.811104632	18.804	17.403	15.695		13.638	~	1	0
109	SSTGLMC G284.2371-00.4430	Y*?	10 23 21.46	-57 50 11.3	13.38	13.184			23.111	~	1	0
110	2MASS J10232159-5746354	Y*?	10 23 21.5948689512	-57 46 35.448098268	18.804	18.607	16.507		13.966	~	1	0
111	SSTGLMC G284.2127-00.4020	Y*?	10 23 22.07	-57 47 19.8	13.38	13.184			20.894	~	1	0
112	SSTGLMC G284.2070-00.3900	Y*?	10 23 22.81	-57 46 32.6	13.38	13.184			20.854	~	1	0
113	2MASS J10232328-5744599	Y*?	10 23 23.2784005344	-57 45 00.010760580	17.655	16.542	15.187		13.600	~	1	0
114	SS 215	WR*	10 23 23.4905042448	-58 00 20.834862120		13.86	12.69	12.19	10.75	O2If*/WN5	23	0
115	SSTGLMC G284.2269-00.4177	Y*?	10 23 23.6802787320	-57 48 35.073515664	17.655	22.442	20.277		17.129	~	1	0
116	2MASS J10232399-5748096	Y*?	10 23 23.9920028040	-57 48 09.688721220	17.655	22.442	23.219		18.712	~	1	0
117	2MASS J10232401-5741434	Y*?	10 23 24.0157613376	-57 41 43.432650168	17.655	20.992	18.737		15.911	~	1	0
118	SSTGLMC G284.1954-00.3665	Y*?	10 23 24.06	-57 44 58.6	13.38	13.184			20.784	~	1	0
119	2MASS J10232451-5745121	Y*?	10 23 24.5166221616	-57 45 12.101463792	17.655	20.992	23.757		18.824	~	1	0
120	2MASS J10232476-5748202	Y*?	10 23 24.7654504536	-57 48 20.287143324	19.954	18.407	16.663		14.562	~	1	0
121	SSTGLMC G284.2081-00.3814	Y*?	10 23 25.30	-57 46 08.4	13.38	13.184			21.707	~	1	0
122	2MASS J10232546-5743050	Y*?	10 23 25.4672288352	-57 43 05.065605696	19.954	22.591	20.199		16.606	~	1	0
123	2MASS J10232562-5741542	Y*?	10 23 25.6299922728	-57 41 54.205440972	19.954	20.826	18.669		15.914	~	1	0
124	SSTGLMC G284.1894-00.3502	Y*?	10 23 25.73	-57 43 57.7	13.38	13.184			20.654	~	1	0
125	2MASS J10232741-5748005	Y*?	10 23 27.4101092304	-57 48 00.573721344	18.082	16.816	15.485		13.851	~	1	0
126	2MASS J10232825-5744083	Y*?	10 23 28.2564367392	-57 44 08.377354716	18.082	16.816	22.377		18.326	~	1	0
127	2MASS J10232881-5742022	Y*?	10 23 28.8156271848	-57 42 02.234223864	16.146	15.271	14.071		12.718	~	1	0
128	2MASS J10232935-5745002	Y*?	10 23 29.3506935696	-57 45 00.297016524	16.146	19.572	17.510		14.945	~	1	0
129	SSTGLMC G284.2383-00.4118	Y*?	10 23 29.4497433600	-57 48 39.235963716	13.761	13.481	23.187		19.309	~	1	0
130	2MASS J10232947-5746255	Y*?	10 23 29.4701948352	-57 46 25.602033000	13.761	13.481	12.972		12.343	~	1	0
131	2MASS J10233046-5747216	Y*?	10 23 30.4526205072	-57 47 21.706931976	13.761	20.18	18.149		15.627	~	1	0
132	2MASS J10233053-5744429	Y*?	10 23 30.539	-57 44 42.90	13.761	18.393	16.260		13.708	~	1	0
133	SSTGLMC G284.1886-00.3273	Y*?	10 23 30.9062746536	-57 42 46.403622468	13.38	13.184			18.843	~	1	0
134	2MASS J10233113-5745475	Y*?	10 23 31.1321743992	-57 45 47.595100752	16.564	15.331	13.998		12.532	~	1	0
135	2MASS J10233113-5742213	Y*?	10 23 31.1367175944	-57 42 21.369935448	16.564	19.865	17.698		14.949	~	1	0
136	2MASS J10233242-5746295	Y*?	10 23 32.4188176032	-57 46 29.560525680	16.564	11.81	11.805		10.737	~	1	0
137	SSTGLMC G284.2466-00.4131	Y*?	10 23 32.42	-57 48 59.4	16.564	24.018	22.223		19.888	~	1	0
138	2MASS J10233274-5743311	Y*?	10 23 32.7393646968	-57 43 31.146010428	16.564	20.388	18.363		15.814	~	1	0
139	2MASS J10233285-5750040	Y*?	10 23 32.8443206616	-57 50 04.059969612	18.667	16.207	14.189		11.686	~	1	0
140	2MASS J10233311-5742277	Y*?	10 23 33.1126217424	-57 42 27.704108772	18.667	16.207	21.227		16.414	~	1	0
141	2MASS J10233327-5747440	Y*?	10 23 33.2728143288	-57 47 44.165670720	13.313	12.14	12.869		12.582	~	1	0
142	SSTGLMC G284.2554-00.4217	Y*?	10 23 33.60	-57 49 42.1	13.38	13.184			21.522	~	1	0
143	SSTGLMC G284.2054-00.3387	Y*?	10 23 34.59	-57 43 53.3	13.38	13.184			21.127	~	1	0
144	2MASS J10233511-5747001	Y*?	10 23 35.1090009576	-57 47 00.132050328	13.313	13.118	11.872		10.759	~	1	0
145	SSTGLMC G284.2389-00.3858	Y*?	10 23 35.94	-57 47 21.4	13.38	13.184			21.540	~	1	0
146	2MASS J10233691-5744149	Y*?	10 23 36.9074818272	-57 44 14.934456312	13.313	13.118	23.457		18.774	~	1	0
147	SSTGLMC G284.2579-00.4042	Y*?	10 23 38.77	-57 48 53.7	13.38	13.184			21.148	~	1	0
148	2MASS J10234000-5743168	Y*?	10 23 40.0075004640	-57 43 16.812026220	20.02	18.384	16.582		14.362	~	1	0
149	2MASS J10234031-5748436	Y*?	10 23 40.3147277616	-57 48 43.711337772	20.02	22.317	20.267		17.451	~	1	0
150	2MASS J10234062-5744391	Y*?	10 23 40.6248581712	-57 44 39.136608636	20.02	22.317	22.746		18.465	~	1	0
151	SSTGLMC G284.2614-00.3915	Y*?	10 23 43.16	-57 48 22.0	13.38	13.184			21.279	~	1	0
152	SSTGLMC G284.2514-00.3741	Y*?	10 23 43.53	-57 47 09.9	13.38	13.184			22.283	~	1	0
153	2MASS J10234469-5746502	Y*?	10 23 44.6719346400	-57 46 50.277057024	20.02	22.317	22.221		17.967	~	1	0
154	SSTGLMC G284.2361-00.3435	Y*?	10 23 45.0240146112	-57 45 06.434990172	20.02	22.787	21.262		18.864	~	1	0
155	2MASS J10234900-5750124	Y*?	10 23 49.0032500352	-57 50 12.497260488	19.539	17.95	16.184		14.077	~	1	0
156	2MASS J10234924-5748510	Y*?	10 23 49.247	-57 48 51.03	13.38	13.184			21.501	~	2	0
157	2MASS J10235012-5746242	Y*?	10 23 50.1283276416	-57 46 24.309196716	19.539	18.48	16.070	15.04	12.693	~	2	0
158	2MASS J10235098-5744387	Y*?	10 23 50.9915874744	-57 44 38.766244596	19.196	19.368	16.036	15.10	11.994	~	2	0
159	[VKB2013] 51	Y*?	10 23 51.6467882064	-57 46 14.338265664	19.539	18.667	23.721		19.346	~	2	0
160	SSTGLMC G284.2723-00.3717	Y*?	10 23 52.0423439112	-57 47 42.750086676	16.666	15.58	14.392		13.109	~	1	0
161	2MASS J10235266-5746016	Y*?	10 23 52.6694659776	-57 46 01.681660884	15.801	15.118	13.739	13.34	12.420	~	4	0
162	2MASS J10235383-5749315	Y*?	10 23 53.8258757448	-57 49 31.545960204	15.752	19.157	16.362		12.679	~	1	0
163	Cl* Westerlund 2 MSP 165	*	10 23 55.1755939200	-57 45 26.926386300	17.271	17.386	15.610	14.98	13.153	O4V	11	0
164	2MASS J10235585-5744188	LP?	10 23 55.8632826082	-57 44 18.873376343	15.752	21.947	20.047		17.070	~	3	0
165	Cl* Westerlund 2 MSP 182	*	10 23 56.1791084352	-57 45 30.028596588	15.681	15.965	14.514	13.87	12.411	O4III	17	0
166	SSTGLMC G284.2563-00.3281	Y*?	10 23 56.4575003328	-57 44 59.201550924	20.097	18.933	17.214		14.893	~	5	0
167	SSTGLMC G284.2557-00.3228	Y*?	10 23 57.51	-57 44 41.8	19.723	18.757	23.467		19.600	~	1	0
168	V* V712 Car	EB*	10 23 58.0126366512	-57 45 48.937268268	15.466	15.473	13.5	12.6		O3If/WN6+O3If/WN6	171	1
169	SSTGLMC G284.2836-00.3647	Y*?	10 23 58.0397343024	-57 47 42.703815912	19.723	21.537	19.747		16.934	~	1	0
170	Cl Westerlund 2	OpC	10 23 58.1	-57 45 49						~	359	0
171	SSTGLMC G284.2933-00.3780	Y*?	10 23 58.46	-57 48 42.4	19.723	21.537	23.321		20.757	~	1	0
172	SSTGLMC G284.2612-00.3270	Y*?	10 23 58.5893333400	-57 45 05.452463052	19.723	20.930	19.287		16.700	~	5	0
173	2MASS J10235862-5746040	Y*?	10 23 58.621	-57 46 04.07	19.723	20.964	23.892		19.510	~	1	0
174	2MASS J10235864-5749373	Y*?	10 23 58.6393269360	-57 49 37.329855564	15.43	14.417	13.333		12.215	~	1	0
175	[VKB2013] 381	Y*?	10 23 59.12	-57 44 35.2	15.43	14.417	23.706		20.071	~	2	0
176	Cl* Westerlund 2 MSP 223	*	10 23 59.192	-57 45 40.27	17.493	17.681	16.015		13.634	O7-8	9	0
177	2MASS J10235955-5745225	Y*?	10 23 59.5521134760	-57 45 22.546887048	15.174	14.452	13.030	12.74	11.800	G8III	6	0
178	[VKB2013] 447	Y*?	10 23 59.66	-57 46 10.1	15.43	14.417	23.967		20.443	~	2	0
179	CXOU J102359.7-574456	LP?	10 23 59.7607313568	-57 44 57.236469144	15.43	20.826	18.679		15.981	~	6	0
180	2MASS J10240020-5745327	Y*?	10 24 00.1959783120	-57 45 32.573977560	17.379	17.589	16.100	15.28	13.944	O8.5V	12	0
181	[VKB2013] 507	Y*?	10 24 00.20	-57 45 01.1	13.38	13.184			20.448	~	2	0
182	2MASS J10240034-5745426	Y*?	10 24 00.3457216776	-57 45 42.634132344	17.294	17.478	15.863		13.614	O8V	8	0
183	Cl* Westerlund 2 MSP 151	*	10 24 00.4800478179	-57 45 23.965667265	15.792	16.031	14.546	13.83	12.414	O4V	14	0
184	Cl* Westerlund 2 MSP 44	*	10 24 00.4966924632	-57 44 44.501841888	16.761	16.945	15.587	15.11	13.826	B1V+PMS	15	0
185	[VKB2013] 584	*	10 24 00.71	-57 45 25.4	16.597	16.876	15.466		13.374	O8V	4	0
186	Cl* Westerlund 2 MSP 157	Y*?	10 24 00.73608	-57 45 25.3908		15.50	14.14	13.009		O6.5V	12	0
187	Cl* Westerlund 2 MSP 96	*	10 24 00.9775872868	-57 45 05.467395389	17.275	17.447	16.111	15.85	14.06	B1:+B1:	11	0
188	Cl* Westerlund 2 MSP 233	*	10 24 01.0674420168	-57 45 45.688150800	17.417	17.721	16.239	15.74	14.069	O9.5V	11	0
189	2MASS J10240111-5742531	Y*?	10 24 01.1183406984	-57 42 53.153502480	15.43	20.625	18.372		15.492	~	3	0
190	Cl* Westerlund 2 MSP 188	*	10 24 01.258	-57 45 30.86		14.60	13.32			O3V+O5.5	11	0
191	Cl* Westerlund 2 MSP 175	*	10 24 01.3861781448	-57 45 29.615464584	15.188	15.495	14.084		12.045	O4V	13	0
192	Cl* Westerlund 2 MSP 263	*	10 24 01.5193116672	-57 45 57.009990168	16.791	16.863	15.053	14.31	12.582	O6V	13	0
193	2MASS J10240156-5744057	Y*?	10 24 01.5694049808	-57 44 05.714181492	13.661	13.408	13.080		12.700	A9V	4	0
194	2MASS J10240187-5744152	Y*?	10 24 01.8823284552	-57 44 15.291733344	13.661	23.923	20.581		16.039	~	4	0
195	Cl* Westerlund 2 MSP 219	*	10 24 01.8839953920	-57 45 40.007830248	18.084	18.230	16.574	15.93	14.283	O9.5V	10	0
196	[VKB2013] 771	*	10 24 01.89	-57 45 28.0	16.862	17.034	15.524		13.334	O8V	3	0
197	Cl* Westerlund 2 MSP 167	*	10 24 02.0625463104	-57 45 27.966989664	16.001	16.117	14.453		12.121	O8V	18	0
198	[RSN2011] D	*	10 24 02.19	-57 45 31.3	18.023	18.210	16.609		14.389	O9.5:	5	0
199	2MASS J10240226-5743583	Y*?	10 24 02.2524605640	-57 43 58.389289392	13.661	23.507	19.997		15.198	~	4	0
200	[VKB2013] 843	*	10 24 02.26	-57 45 35.1	16.031	16.234	14.736		12.549	O4-5V	7	0
201	2MASS J10240228-5746309	Y*?	10 24 02.2862326896	-57 46 30.849968892						~	2	0
202	Cl* Westerlund 2 NRM 4	PM*	10 24 02.302	-57 45 35.14		14.66	13.22	12.47	10.81	O4.5V	10	0
203	[VKB2013] 857	*	10 24 02.31	-57 45 35.5	15.145	15.368	13.893		11.820	O4.5V	8	0
204	SSTGLMC G284.2737-00.3311	Y*?	10 24 02.33	-57 45 41.8	13.661	23.507	19.009		16.225	~	3	0
205	Cl* Westerlund 2 MSP 183	*	10 24 02.3591943528	-57 45 30.615139584	15.423	15.496	13.878			O3V(f)	14	0
206	Cl* Westerlund 2 MSP 235	*	10 24 02.4117400632	-57 45 47.062112796	18.208	18.092	16.328	16.35	14.081	O9.5V	11	0
207	Cl Westerlund 2 5	*	10 24 02.4404730984	-57 44 36.147162768	14.149	14.514	13.155	12.2		O5/5.5V/III(f)	26	0
208	[RSN2011] C	*	10 24 02.52	-57 45 31.5	17.250	17.388	15.790		13.474	O7V	5	0
209	[RSN2011] B	*	10 24 02.55	-57 45 30.5	17.749	17.892	16.243		13.907	O6-7	4	0
210	[RSN2011] E	*	10 24 02.60	-57 45 32.3	17.533	17.697	16.118		13.840	O6-7	5	0
211	2MASS J10240262-5742235	Y*?	10 24 02.624	-57 42 23.50	13.661	20.191	18.023		15.273	~	1	0
212	Cl* Westerlund 2 MSP 199	*	10 24 02.6483868216	-57 45 34.350515136	15.870	16.082	14.554		12.398	O3V	16	0
213	[RSN2011] A	*	10 24 02.7853348752	-57 45 30.009224232	17.418	17.556	15.963		13.714	O8V	8	0
214	Cl* Westerlund 2 MSP 355	*	10 24 03.0496331904	-57 46 54.272310024		18.28	16.84	16.23	14.54	~	5	0
215	2MASS J10240306-5748356	*	10 24 03.0657646440	-57 48 35.645154660						O9V	8	0
216	2MASS J10240343-5744513	Y*?	10 24 03.4495665096	-57 44 51.279357336	13.661	20.191	22.320		18.984	~	1	0
217	SSTGLMC G284.2626-00.3085	Y*?	10 24 03.55	-57 44 11.8	13.38	13.184			19.930	~	1	0
218	[VKB2013] 1001	Y*?	10 24 03.7397221840	-57 46 17.246155415	21.22	20.118	18.431		15.980	~	4	0
219	Cl* Westerlund 2 MSP 32	*	10 24 03.7842354720	-57 44 39.837969780	16.483	16.729	15.349		13.461	O9.5	9	0
220	2MASS J10240435-5744081	Y*?	10 24 04.3599957264	-57 44 08.172480516	21.22	21.934	19.869		16.929	~	1	0
221	SSTGLMC G284.2675-00.3119	Y*?	10 24 04.65	-57 44 31.4	13.38	13.184			19.490	~	1	0
222	Cl* Westerlund 2 MSP 171	*	10 24 04.8976113720	-57 45 28.395048240	15.975	16.134	14.528	13.91	12.307	O5V	17	0
223	SSTGLMC G284.2809-00.3303	Y*?	10 24 05.2548049728	-57 45 53.062141968	21.22	21.24	19.170		16.193	~	4	0
224	SSTGLMC G284.2685-00.3102	Y*?	10 24 05.39	-57 44 28.1	13.38	13.184			21.748	~	1	0
225	SSTGLMC G284.2743-00.3185	Y*?	10 24 05.67	-57 45 04.6	13.38	13.184			21.239	~	1	0
226	SSTGLMC G284.2779-00.3223	Y*?	10 24 06.10	-57 45 23.0	21.22	21.24	23.878		20.235	~	1	0
227	2MASS J10240621-5744429	Y*?	10 24 06.2187433536	-57 44 42.999658296	21.22	19.857	17.794		15.298	~	3	0
228	2MASS J10240628-5744097	Y*?	10 24 06.288	-57 44 09.72	21.22	19.51	22.323		18.857	~	2	0
229	SSTGLMC G284.2745-00.3149	Y*?	10 24 06.50	-57 44 54.0	13.38	13.184			20.579	~	1	0
230	2MASS J10240741-5745032	Y*?	10 24 07.4238313104	-57 45 03.322809684	20.959	20.327	18.653		16.342	~	5	0
231	2MASS J10240799-5746009	Y*?	10 24 07.9930039776	-57 46 00.969756960	20.959	20.953	19.179		16.491	~	2	0
232	2MASS J10240969-5742187	Y*?	10 24 09.6972573720	-57 42 18.775856484	20.959	21.04	18.683		15.695	~	4	0
233	2MASS J10241069-5745599	Y*?	10 24 10.7025752688	-57 46 00.032604924	20.959	18.746	16.235		12.868	~	3	0
234	2MASS J10241151-5741304	Y*?	10 24 11.5142373456	-57 41 30.457639428	20.959	19.588	17.737		14.882	~	1	0
235	2MASS J10241190-5744199	Y*?	10 24 11.9106648168	-57 44 19.984312104	20.959	19.993	17.902		15.276	~	4	0
236	2MASS J10241245-5743343	Y*?	10 24 12.4581423829	-57 43 34.349589190	20.959	19.993	21.166		16.338	~	2	0
237	SSTGLMC G284.2993-00.3275	Y*?	10 24 12.97	-57 46 19.7	13.38	13.184			20.771	~	1	0
238	2MASS J10241305-5742249	Y*?	10 24 13.0543463304	-57 42 24.918710688	15.178	14.403	13.406		12.363	~	1	0
239	2MASS J10241350-5743299	Y*?	10 24 13.5046473120	-57 43 29.950628880	18.41	17.35	15.896		14.038	~	1	0
240	2MASS J10241454-5746215	Y*?	10 24 14.5462407504	-57 46 21.562009860	18.41	18.897	16.649		13.918	~	1	0
241	GUM 29	HII	10 24 14.6	-57 46 58						~	210	0
242	2MASS J10241829-5745264	Y*?	10 24 18.2952833520	-57 45 26.538602760	18.41	12.33	11.693		10.588	~	2	0
243	WR 20b	WR*	10 24 18.3978418584	-57 48 29.776921704			13.7	12.0		WN6ha	58	0
244	2MASS J10241905-5741471	LP?	10 24 19.0399057968	-57 41 47.107771152	18.41	18.897	23.730		16.653	~	2	0
245	SSTGLMC G284.3195-00.3289	Y*?	10 24 20.32	-57 47 02.9	13.38	13.184			21.861	~	1	0
246	2MASS J10242181-5742220	Y*?	10 24 21.8048932080	-57 42 22.122291096	18.41	18.897	13.138		11.568	~	1	0
247	HD 302752	Y*?	10 24 22.5093708096	-57 44 09.213917028	18.41	11.47	11.266		11.159	A	6	0
248	TYC 8608-2309-1	PM*	10 24 24.5393083128	-57 42 30.101388300	13.491	12.78	12.08		12.124	~	1	0
249	SSTGLMC G284.3424-00.3455	Y*?	10 24 25.0442760528	-57 48 37.192346604	13.491	13.392	21.469		18.080	~	1	0
250	2MASS J10242909-5744180	Y*?	10 24 29.0970305496	-57 44 18.066706620	18.311	16.022	14.011		11.738	~	1	0
251	2MASS J10242983-5742152	Y*?	10 24 29.8362147168	-57 42 15.327478944	16.402	15.293	14.009		12.586	~	1	0
252	2MASS J10242988-5743498	Y*?	10 24 29.8844727576	-57 43 49.897964964	16.402	21.908	19.920		16.808	~	1	0
253	SSTGLMC G284.3050-00.2538	Y*?	10 24 32.79	-57 42 46.3	13.38	13.184			20.817	~	1	0
254	2MASS J10243388-5742444	Y*?	10 24 33.8746993800	-57 42 44.529909948	16.402	13.12	11.944		10.768	~	1	0
255	2MASS J10243808-5741267	Y*?	10 24 38.0840033352	-57 41 26.751830028	16.402	12.09	11.212		10.009	~	1	0
256	2MASS J10243900-5743002	Y*?	10 24 38.9963065872	-57 43 00.326580384	16.402	21.908	21.960		16.571	~	1	0
257	UCAC2 6537809	Em*	10 24 39.1832377656	-57 45 21.247877520				14.2		OB	11	0
258	SSTGLMC G284.3782-00.3417	Y*?	10 24 39.58	-57 49 34.5	16.402	23.368	21.530		18.857	~	1	0
259	2MASS J10244059-5749267	Y*?	10 24 40.5923122896	-57 49 26.729355000	18.77	16.722	15.001		13.063	~	2	0
260	SSTGLMC G284.3763-00.3319	Y*?	10 24 41.25	-57 49 00.9	13.38	13.184			21.284	~	1	0
261	2MASS J10244130-5748303	Y*?	10 24 41.3000891040	-57 48 30.406029300	18.77	19.573	17.367		14.728	~	1	0
262	2MASS J10244140-5742594	Y*?	10 24 41.4030075432	-57 42 59.475121452	18.77	21.603	19.161		16.087	~	1	0
263	SSTGLMC G284.3494-00.2877	Y*?	10 24 41.5490612328	-57 45 54.722599776	21.88	21.016	19.488		17.160	~	1	0
264	2MASS J10244376-5749293	Y*?	10 24 43.7624452008	-57 49 29.440968492	21.88	19.016	16.948		14.408	~	1	0
265	2MASS J10244503-5747293	Y*?	10 24 45.0269535672	-57 47 29.427046296	17.18	15.862	14.445		12.828	~	1	0
266	SSTGLMC G284.3517-00.2759	Y*?	10 24 45.30	-57 45 23.3	17.18	22.886	20.913		18.189	~	1	0
267	2MASS J10244552-5743296	Y*?	10 24 45.5179994472	-57 43 29.706905532	16.254	14.994	13.738		12.378	~	1	0
268	2MASS J10244616-5748546	Y*?	10 24 46.1619687576	-57 48 54.707198148	18.837	17.46	15.735		13.627	~	1	0
269	2MASS J10244628-5745523	Y*?	10 24 46.281	-57 45 52.35	18.837	17.46	21.790		17.545	~	1	0
270	2MASS J10245247-5743096	Y*?	10 24 52.4690730792	-57 43 09.706897380	18.837	17.46	12.763		11.013	~	1	0
271	2MASS J10245298-5746583	Y*?	10 24 52.9773865008	-57 46 58.381350024	19.847	19.259	17.897		15.904	~	1	0
272	2MASS J10245300-5747353	Y*?	10 24 52.9988574936	-57 47 35.368035684	19.847	21.449	19.106		16.191	~	1	0
273	2MASS J10245338-5749040	Y*?	10 24 53.3874676776	-57 49 04.113683580	18.341	17.284	16.005		14.529	~	2	0
274	2MASS J10245424-5747539	Y*?	10 24 54.2366596080	-57 47 53.993265108	18.341	17.284	22.230		17.895	~	1	0
275	SSTGLMC G284.3351-00.2113	Y*?	10 24 54.3671766048	-57 41 34.438370856	13.38	13.184			19.140	~	1	0
276	2MASS J10245468-5746171	Y*?	10 24 54.6826913280	-57 46 17.118460488	18.205	16.651	15.107		13.329	~	4	0
277	SSTGLMC G284.4070-00.3218	Y*?	10 24 55.38	-57 49 28.9	13.38	13.184			21.724	~	1	0
278	SSTGLMC G284.3790-00.2761	Y*?	10 24 55.6022580552	-57 46 15.331931544	16.758	16.599	15.939		15.117	~	1	0
279	2MASS J10245569-5749092	Y*?	10 24 55.7010107112	-57 49 09.229900404	16.273	14.743	13.352		11.944	~	1	0
280	2MASS J10245625-5746029	Y*?	10 24 56.2570702056	-57 46 02.907557184	14.194	14.094	13.576		12.933	~	1	0
281	SSTGLMC G284.3947-00.2980	Y*?	10 24 56.4137070288	-57 47 52.708280856	18.516	16.274	14.088		11.584	~	1	0
282	2MASS J10245641-5748170	Y*?	10 24 56.4166300392	-57 48 17.104899924	13.682	13.554	12.982		12.304	~	1	0
283	SSTGLMC G284.3949-00.2967	Y*?	10 24 56.7961549752	-57 47 49.121907468	13.38	13.184			19.006	~	1	0
284	2MASS J10245711-5748327	Y*?	10 24 57.1234852848	-57 48 32.710805280	14.09	14	13.456		12.789	~	1	0
285	2MASS J10245718-5741509	Y*?	10 24 57.1780421784	-57 41 51.019219032	14.09	21.292	18.946		16.063	~	1	0
286	2MASS J10245735-5747385	Y*?	10 24 57.3606277128	-57 47 38.505368760	14.09	21.292	12.844		11.547	~	1	0
287	2MASS J10245765-5745153	Y*?	10 24 57.6577022208	-57 45 15.386291892	17.876	16.51	14.906		13.011	~	1	0
288	2MASS J10245840-5741272	Y*?	10 24 58.406	-57 41 27.27	17.876	20.186	17.931		15.148	F8Ve	2	0
289	2MASS J10245880-5744577	Y*?	10 24 58.8034203504	-57 44 57.795732420	17.876	21.519	19.055		15.894	~	2	0
290	2MASS J10245882-5741318	Y*?	10 24 58.8220469352	-57 41 31.927571340	17.876	21.519	22.895		18.443	~	1	0
291	2MASS J10245883-5743340	Y*?	10 24 58.8343738560	-57 43 34.076442540	15.464	15.378	14.371		13.014	~	1	0
292	2MASS J10245885-5748369	Y*?	10 24 58.8561681120	-57 48 36.961588008	15.464	18.417	16.420		14.022	~	2	0
293	2MASS J10245908-5750117	Y*?	10 24 59.0894842632	-57 50 11.730119964	17.071	15.879	14.447		12.800	~	1	0
294	2MASS J10250052-5744431	Y*?	10 25 00.5275535064	-57 44 43.153999944	17.071	15.879	21.885		18.003	~	1	0
295	2MASS J10250101-5741305	Y*?	10 25 01.0056011208	-57 41 30.544413396	17.071	15.879	22.523		18.029	~	1	0
296	2MASS J10250172-5747161	Y*?	10 25 01.7194513824	-57 47 16.153398528	19.49	18.338	16.650		14.517	~	1	0
297	2MASS J10250173-5746521	Y*?	10 25 01.7334644640	-57 46 52.130432208	19.49	18.338	24.121		19.306	~	1	0
298	2MASS J10250211-5744043	Y*?	10 25 02.1179016384	-57 44 04.309145088	13.38	13.184	12.752		12.289	~	1	0
299	2MASS J10250245-5748314	Y*?	10 25 02.4484437264	-57 48 31.396408848	13.38	13.184	23.179		17.647	~	1	0
300	WR 20c	WR*	10 25 02.6119040592	-57 21 47.351428776		20.10	17.51	16.89	13.35	O2If*/WN6	16	0
301	SSTGLMC G284.4291-00.3245	Y*?	10 25 03.20	-57 50 19.2	13.38	13.184			21.374	~	1	0
302	THA 35-II-42	WR*	10 25 56.5024585224	-57 48 43.519215708		14.168	12.661	12.102		WN5ha/O3+O3Vz((f*))	95	0
303	Cl Trumpler 14	OpC	10 43 56.6	-59 33 11		5.70	5.5			~	509	0
304	Cl Trumpler 16	OpC	10 45 00.7	-59 42 00						~	484	0
305	NGC 3372	HII	10 45 02.23	-59 41 59.8						~	1014	2
306	* eta Car	Em*	10 45 03.545808	-59 41 03.95124	6.37	7.03	6.48	6.123	4.41	LBV	2440	0
307	NGC 3603	OpC	11 15 10.8	-61 15 32						~	1068	1
308	SA 104-	reg	12 42 21.0	-00 32 29						~	58	0
309	Cl Hogg 15	OpC	12 43 37.4	-63 06 04						~	58	0
310	NAME Car-Sgr Arm	PoG	15 00	-40.0						~	514	1
311	SA 107-	reg	15 39.2	-00 20						~	90	0
312	Cl Westerlund 1	Cl*	16 47 02.4	-45 51 07						~	569	0
313	NGC 6231	OpC	16 54 10.8	-41 48 43						~	538	0
314	NAME Galactic Center	reg	17 45 39.60213	-29 00 22.0000						~	14429	0
315	NAME Arches Cluster	Cl*	17 45 50.5	-28 49 28						~	738	0
316	SA 110-	reg	18 45	+00.6						~	100	0
317	Ass Cyg OB 2	As*	20 33.2	+41 19						~	945	0
318	SA 111-	reg	~	~						~	17	0
319	NAME Local Group	GrG	~	~						~	8404	0
320	NAME Carina Region	reg	~	~						~	186	0

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