2008ApJS..177..238G

Query : 2008ApJS..177..238G

2008ApJS..177..238G - Astrophys. J., Suppl. Ser., 177, 238-254 (2008/July-0)

An X-ray survey of Wolf-Rayet stars in the Magellanic Clouds. II. The ROSAT PSPC and HRI data sets.

GUERRERO M.A. and CHU Y.-H.

Abstract (from CDS):

Wolf-Rayet (WR) stars in the Magellanic Clouds (MCs) are ideal for studying the production of X-ray emission by their strong fast stellar winds. We have started a systematic survey for X-ray emission from WR stars in the MCs using archival Chandra, ROSAT, and XMM-Newton observations. In Paper I, we reported the detection of X-ray emission from 29 WR stars using Chandra ACIS observations of 70 WR stars in the MCs. In this paper, we report the search and analysis of archival ROSAT PSPC and HRI observations of WR stars. While useful ROSAT observations are available for 117 WR stars in the MCs, X-ray emission is detected from only seven of them. The detection rate of X-ray emission from MCs WR stars in the ROSAT survey is much smaller than in the Chandra ACIS survey, illustrating the necessity of high angular resolution and sensitivity. LMC-WR 101-102 and 116 were detected by both ROSAT and Chandra, but no large long-term variations are evident.

Abstract Copyright: ∼

Journal keyword(s): Galaxies: Magellanic Clouds - Stars: Wolf-Rayet - Surveys - X-Rays: Stars

Simbad objects: 144

Full paper

View the references in ADS

Number of rows : 144

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	SMC AB 1	WR*	00 43 42.3082596960	-73 28 55.259220360	14.33	15.20	15.24		15.21	WN3+O4:	30	0
2	SMC AB 10	WR*	00 45 28.9085871312	-73 04 45.621712056	14.69	15.81	15.55		15.96	WN3ha	21	0
3	SMC AB 2	WR*	00 48 30.8447640360	-73 15 45.829848132	13.23	14.23	14.43		14.52	WN4.5/O3	49	0
4	LIN 143	WR*	00 49 59.3505485400	-73 22 14.121279948	13.48	14.43	14.56		14.57	WN3/4+O4	37	0
5	LIN 160	WR*	00 50 43.4248908624	-73 27 05.815089828	12.363	13.304	13.426		13.55	WN6	48	0
6	SMC AB 11	WR*	00 52 07.39	-72 35 38.6		15.593	15.816		16.011	WN4h:a	22	0
7	SMC AB 9	WR*	00 54 32.1559137576	-72 44 35.666609568	14.31	15.26	15.43		15.69	WN3ha	27	0
8	HD 5980	WR*	00 59 26.5838833944	-72 09 53.927337312		11.13	11.31		11.029	WN4+O7I:	389	1
9	SMC AB 12	WR*	01 02 52.4011237800	-72 06 52.532688348		16	16.08			WN3ha	21	0
10	RMC 31	WR*	01 03 25.2272050176	-72 06 43.857668340		12.11	12.30			WN3:h+O5.5V+O5.5If+O7.5V	112	0
11	SMC AB 7	WR*	01 03 35.9241336168	-72 03 22.118601312	11.933	12.954	13.016		13.32	WN4+O6I(f)	48	0
12	LIN 547	WR*	01 31 04.1367366432	-73 25 03.784411524		12.75	12.90			WO4+O4V	95	0
13	NAME Magellanic Clouds	GrG	03 00	-71.0						~	6838	1
14	Brey 3	WR*	04 52 57.3970420344	-66 41 13.495924752	13.793	14.531	14.640		14.527	WN4b	40	0
15	Brey 4	WR*	04 54 28.0891890576	-69 12 50.797294596	15.957	16.715	16.742		16.363	WN2b	30	0
16	SK -67 18	WR*	04 55 14.9246934528	-67 11 23.535862980	10.990	11.803	11.95		12.072	O6-7n-nn+WN5-6-A	58	0
17	HD 32109	WR*	04 55 31.3415815464	-67 30 02.683346940	12.893	13.46	13.81	13.95	13.512	WN4b	73	0
18	HD 32125	WR*	04 56 11.0961328800	-66 17 33.052465428	13.704	14.295	14.33		14.618	WC	56	0
19	HD 32228	WR*	04 56 34.666	-66 28 26.34		10.685	10.830			WC4+O9.5II:	93	0
20	NGC 1761	As*	04 56 39	-66 29.0			9.94			~	98	0
21	HD 32402	WR*	04 57 24.0820685472	-68 23 57.120838692		12.53	12.69	13.24		WC	78	0
22	Brey 10a	WR*	04 57 27.4544617632	-67 39 02.864000880	12.213	13.314	13.496		13.564	O2If*/WN5	57	1
23	LHA 120-S 9	WR*	04 57 41.0338477008	-66 32 42.553604940	12.191	12.91	12.82	12.91	11.781	WN10	53	0
24	HD 268856	WR*	04 58 56.3625896976	-68 48 04.732033356		12.130	10.827	10.34	9.33	WN4o(+OB)	45	0
25	HD 268847	WR*	04 59 51.5602106760	-67 56 55.438699560	13.658	14.21	14.58	14.75	14.426	WN4b	54	0
26	HD 33133	WR*	05 03 08.9126630616	-66 40 57.492259824		12.46	12.63	12.85		WN7h	92	0
27	HD 34169	WR*	05 09 40.4196726384	-68 53 24.752391396	12.773	13.47	13.65	14.02	13.697	WN4b+O5:	66	1
28	Brey 16a	WR*	05 09 53.7665948424	-68 52 52.472362872		14.12	13.93			WC5+O	21	0
29	HD 34632	WR*	05 13 43.7713381440	-67 22 29.382994920	12.144	13.002	13.07	13.41	13.271	WN4+OB	30	0
30	HD 269227	WR*	05 13 54.2756276088	-69 31 46.665067440	11.429	11.98	11.918	12.13	10.557	WN9/10+M2Ia	160	0
31	BAT99 23	WR*	05 13 56.0309726688	-67 24 36.498713292		17.29	16.98			WN3(h)	14	0
32	HD 34783	WR*	05 14 12.7026762984	-69 19 26.110131672	13.668	14.115	14.49	14.55	14.150	WN4b	45	0
33	Brey 19a	WR*	05 14 57.2842242120	-71 36 18.312615000		14.87	15.10	15.49		WN4ha	21	0
34	Brey 20	WR*	05 16 38.8431915960	-69 16 40.826569980	13.791	14.345	14.48	15.05	14.336	WN4b	39	0
35	HD 269333	WR*	05 18 19.2104631720	-69 11 40.657335684	10.375	11.23	11.29	11.47	11.412	WN+BI	59	0
36	HD 35517	WR*	05 19 16.3515868608	-69 39 20.012864004	11.193	11.754	11.58	12.36	11.953	WC4+O5/6III/V+O	86	0
37	Brey 23	WR*	05 20 44.7306962712	-65 28 20.441024040	13.774	14.43	14.65	14.87	14.534	WN4b+OB	39	0
38	LHA 120-S 28	WR*	05 21 57.6946827024	-65 49 00.222663684	12.395	13.12	13.32	13.62	13.295	WN6h	46	0
39	Brey 25	WR*	05 22 04.4095895424	-67 59 06.777660876	14.589	15.326	15.207		14.993	WN4b	38	0
40	HD 36063	WR*	05 22 22.5295596384	-71 35 58.154210736	11.583	12.43	12.66	12.85	12.602	WN7	71	0
41	HD 269445	WR*	05 22 59.7855849168	-68 01 46.635948408	10.79	11.77	11.520	11.41	10.979	Ofpe/WN9	121	0
42	HD 36156	WR*	05 23 10.0576745256	-71 20 50.843953284	11.732	12.54	12.74	12.97	12.960	WC	44	0
43	Brey 27	WR*	05 23 18.0136346784	-65 56 56.944850280	13.870	14.624	14.876		14.929	WN3(h)	38	0
44	HD 269485	WR*	05 24 24.1935093984	-68 31 35.592471948	13.593	14.40	14.46	14.39	14.574	WN4b/WCE+OB	57	0
45	Brey 30	WR*	05 24 54.3452003016	-66 14 11.166920160	16.080	16.545	16.328		15.915	WN3o	20	0
46	HD 36402	WR*	05 26 03.9637892880	-67 29 57.087864096		11.25	11.621	11.65		(WC)	138	0
47	HD 36521	WR*	05 26 30.2591541144	-68 50 27.500574192		12.156	12.317	12.529		WC4+O6III/V+O	84	0
48	Brey 33	WR*	05 26 36.8640	-68 50 59.640		14.591	14.77			WN4(h)a	31	0
49	HD 269549	WR*	05 26 42.5908088736	-69 06 57.344865912	14.308	14.53	14.76	15.11	14.589	WN4b	46	0
50	HD 269546	WR*	05 26 45.3202797576	-68 49 52.787839260	9.00	9.83	9.86	9.76	9.76	WN5b(h)+B3I	108	0
51	Brey 37	WR*	05 27 37.6898837256	-70 36 05.324162832	12.875	13.85	14.07	14.43	14.249	WN4o+OB	39	0
52	LHA 120-S 108	WR*	05 27 42.6930652824	-69 10 00.379546536	12.243	13.232	13.41	13.67	13.287	WN8ha	42	0
53	HD 269582	WR*	05 27 52.6621673400	-68 59 08.488879836	12.206	10.818	11.093	12.70	11.234	WN10h	107	0
54	Brey 38	WR*	05 28 17.9135754480	-69 02 35.894733612		15.22	15.26			WN4o	32	0
55	HD 269618	WR*	05 29 12.3651158016	-68 45 36.147697236	14.391	15.104	15.295	15.32	15.222	WN3b	31	0
56	HD 269624	WR*	05 29 31.6376299080	-68 54 28.817207028	14.008	14.491	14.781	14.81	14.703	WN4b	46	1
57	Brey 40a	WR*	05 29 33.2070992328	-70 59 34.838770092	12.472	13.20	13.39	13.90	13.743	WN4:b+O8V	41	0
58	Brey 41	WR*	05 29 53.6514294768	-69 01 04.805719284		13.740	13.70			WN5h	19	0
59	Brey 42	WR*	05 30 02.4527669472	-68 45 18.387861660	14.146	14.939	15.201		15.213	WN3b	32	0
60	HD 37026	WR*	05 30 12.1637529576	-67 26 08.329055928	12.853	13.16	13.53	13.56	13.856	WC	76	0
61	HD 37248	WR*	05 30 38.703	-71 01 47.80	12.319	12.983	12.99	13.39	13.413	WC4+O9	55	0
62	Brey 44a	WR*	05 31 18.0558143832	-69 08 45.425541264		14.55	14.26	14.26		WN8ha	26	0
63	HD 269687	WR*	05 31 25.5247745448	-69 05 38.556251700	10.86	11.78	11.87	12.05		WN11h	109	0
64	HD 269692	WR*	05 31 32.8704053376	-67 40 46.605246924	13.592	14.28	14.49	14.70	14.519	WN4b	46	0
65	Brey 45	WR*	05 31 34.3667195064	-67 16 29.329573872	14.146	14.696	14.897	15.02	14.835	WN4b	32	0
66	Brey 47	WR*	05 32 07.4960150664	-68 26 31.570497852	14.772	15.35	14.97	15.02	14.373	WN7h	34	0
67	HD 269748	WR*	05 33 10.5705227928	-67 42 43.053720228	12.093	13.054	13.186		12.828	WN4b+O8:	49	0
68	Brey 49	WR*	05 33 10.8684124200	-69 29 01.010415480	13.435	14.227	14.42		14.512	WN4(h)a	24	0
69	HD 37680	WR*	05 34 19.2493989720	-69 45 10.295445528	12.807	12.98	13.25	13.21	13.490	WC	73	1
70	Brey 51	WR*	05 34 37.4804641440	-66 14 37.993247196	14.196	15.041	15.312		15.273	WN3(h)	23	0
71	Brey 52	WR*	05 34 52.0245405048	-67 21 28.974967020	13.624	14.451	14.597	14.84	14.719	WN4ha:	43	0
72	HD 269784	WR*	05 34 59.3904949944	-69 44 06.296661528	13.347	14.081	14.073		14.321	WN4o+O9:	33	0
73	Brey 55	WR*	05 35 15.18	-69 05 43.1	15.612	15.542	15.389			WN4o	22	0
74	Brey 54	WR*	05 35 29.7912404064	-67 06 49.401360900	14.351	15.082	15.360		15.427	WN3(h)	23	0
75	Brey 56	WR*	05 35 42.1981380456	-69 12 34.589718936	12.969	13.708	13.587		13.325	WN5ha	37	1
76	Brey 58	WR*	05 35 42.2160	-69 11 54.240		14.62	14.13			O3If*/WN6	39	0
77	Brey 58a	WR*	05 35 42.287	-69 11 52.57			16.5			WC	12	0
78	HD 269818	WR*	05 35 43.4946848112	-69 10 58.028050092	14.169	14.242	13.897	13.95	13.768	WR	41	0
79	Brey 60	WR*	05 35 44.279	-68 59 36.79	14.527	15.068	14.782	14.87	14.473	WN4+O8:	25	0
80	Brey 61	WR*	05 35 45.0258911688	-68 58 44.532708744	14.632	15.532	15.376		15.533	WN4h+O3:	26	0
81	Brey 63	WR*	05 35 50.6531355552	-68 53 39.203213352	13.730	14.578	14.59		14.841	WN5ha	21	0
82	Brey 63a	WR*	05 35 52.4536264824	-68 55 08.629812120	14.703	15.438	15.584		15.670	WN3(h)a	19	0
83	HD 269848	WR*	05 35 54.0299886024	-67 02 48.969864816	13.694	14.06	14.34	14.65	14.440	WN4o	36	0
84	LHA 120-S 125	WR*	05 35 54.3748881672	-68 59 07.890914940	12.463	13.324	13.266	13.33	12.609	WN9ha	72	0
85	BAT99 77	WR*	05 35 58.889	-69 11 47.88						WN7	71	0
86	HD 269828	EB*	05 35 58.91	-69 11 47.3			13.031		12.837	WN7+O3	72	0
87	BAT99 78	WR*	05 35 59.085	-69 11 51.12		13.07	12.94			WN6(+O8V)	24	0
88	Brey 57	WR*	05 35 59.8168837680	-69 11 22.217610696	13.143	13.784	13.486		12.060	WN7ha+OB	35	0
89	BAT99 80	WR*	05 35 59.913	-69 11 50.70			13.0			O4If+OB	21	0
90	Brey 65a	WR*	05 36 12.1333328856	-67 34 57.776239560	14.609	15.504	15.394		15.173	WN5h	19	0
91	Brey 66	WR*	05 36 33.6047711064	-69 09 17.324592156	15.636	15.937	16.108		15.627	WN3b	31	0
92	HD 269858	s*b	05 36 43.6936418088	-69 29 47.451149232		10.24	10.15	9.95	9.05	LBV	281	2
93	HD 38030	WR*	05 36 51.3798360240	-69 25 56.740737144	12.023	12.814	12.986	13.21	13.605	WC	40	0
94	HD 38029A	WR*	05 36 54.633	-69 11 38.08						WC4	54	1
95	HD 38029	**	05 36 55.16856	-69 11 37.6584	14.523			11.91	11.680	~	61	0
96	HD 38029B	s*b	05 36 55.1865323232	-69 11 37.582606608						B1Ia+	55	1
97	Brey 69	WR*	05 37 11.4810561480	-69 07 38.183877948	15.959	16.427	16.301		15.936	WN3o	25	0
98	Brey 70	WR*	05 37 29.2519905120	-69 20 47.580754164	12.862	13.975	13.686	14.02	14.140	WR	28	0
99	Brey 70a	WR*	05 37 35.7045940032	-69 08 40.251941520	17.387	17.957	16.924		16.324	WN4b/WCE	29	0
100	HD 269883	WR*	05 37 40.4906298216	-69 07 57.672227892	13.454	14.184	14.077	14.03	13.492	WN7h	46	0
101	HD 269888	WR*	05 37 44.6348625936	-69 14 25.673976456	14.413	14.772	14.628	14.81	14.761	WR	46	0
102	Brey 73	WR*	05 37 46.3440	-69 09 09.360		12.222	12.11			WN6(h)	38	1
103	HD 269891	WR*	05 37 49.0343945856	-69 05 08.218283928	11.791	9.447	11.39	11.55		WN6+B1Ia	70	0
104	Brey 74a	WR*	05 37 51.3386549880	-69 09 46.690186716	12.483	13.474	13.446	13.62	13.278	O3If*	36	0
105	HD 269908	WR*	05 38 27.7009045560	-69 29 58.546136796	14.243	14.40	14.29	14.59	14.230	WN4b	43	0
106	RMC 135	WR*	05 38 33.6193296576	-69 04 50.510501688		12.63	13.48			WN7h+OB	59	0
107	Brey 81	WR*	05 38 36.4071127800	-69 06 57.534295248		14.02	13.76		12.80	WN8	34	0
108	BAT99 97	WR*	05 38 38.8401788208	-69 06 49.549699584		14.23	13.74		13.20	O3.5If*/WN7	29	0
109	Brey 79	WR*	05 38 39.1442162640	-69 06 21.297619692			13.5	13.33		WN6	34	0
110	Brey 78	WR*	05 38 40.2960	-69 05 59.640						O2.5If*/WN6	39	0
111	Brey 75	WR*	05 38 40.53	-69 05 57.2		12.84	12.75		12.34	WN6h	62	0
112	RMC 140a	WR*	05 38 41.5967462055	-69 05 13.457120148		12.18	12.12		12.40	WN4+WC5	35	0
113	RMC 140	WR*	05 38 41.61576	-69 05 13.9632		11.213	11.149	11.792		WN7+WC4/5pec	80	0
114	RMC 140b	WR*	05 38 41.6202115352	-69 05 15.192382434		12.61	12.66		12.54	WN6	31	0
115	Brey 76	WR*	05 38 41.8800	-69 06 13.680			12.5			O2If*/WN5	33	1
116	Brey 77	WR*	05 38 42.1044150840	-69 05 55.335965424			12.86		12.79	O2If*	78	0
117	BAT99 106	WR*	05 38 42.291	-69 06 03.45		12.83	12.93			WN5h	64	0
118	RMC 139	WR*	05 38 42.3537501576	-69 04 58.196699796		12.04	11.94			O6.5Iafc+O6Iaf	92	0
119	RMC 136	Cl*	05 38 42.396	-69 06 03.36						~	1960	1
120	BAT99 108	WR*	05 38 42.43	-69 06 02.2		12.78	12.77			WN5h	81	0
121	BAT99 111	WR*	05 38 42.765	-69 06 03.36		13.51	13.66			WN9ha	49	0
122	BAT99 112	WR*	05 38 42.9162	-69 06 04.938		12.95	12.86			WN5h	59	0
123	BAT99 113	WR*	05 38 43.12	-69 05 46.8		13.56	13.47		13.44	O2If*/WN5	44	0
124	BAT99 114	WR*	05 38 43.20	-69 06 14.6		13.52	13.40		13.31	O2If*/WN5	37	0
125	RMC 136a	Cl*	05 38 43.3	-69 06 08						~	147	2
126	Brey 83	WR*	05 38 44.0630210280	-69 05 55.683258756						WC4	26	0
127	Brey 84	HXB	05 38 44.2508644296	-69 06 06.004573020			13.10		12.70	WN5h:a	64	0
128	HD 269926	WR*	05 38 47.5179121824	-69 00 25.287752196	11.953	12.974	13.116	13.16	12.926	WN4+OB	69	0
129	HD 38282	WR*	05 38 53.3783458680	-69 02 00.895545204		10.98	11.11	11.26		WN5/6h+WN6/7h	167	1
130	HD 269928	WR*	05 38 57.0667692816	-69 06 05.660419140		12.02	11.94	12.00	11.58	WN6/7	132	0
131	W61 3-8	WR*	05 38 58.0963884840	-69 29 19.558532292				12.51	12.43	WN9h	53	0
132	Brey 90a	WR*	05 39 03.7764480936	-69 03 46.565761680	16.190	15.895	15.834		15.533	WC5	26	0
133	HD 38344	WR*	05 39 11.3190030600	-69 02 01.571056044	12.323	13.04	12.993	13.07	12.574	WN5h	72	0
134	Brey 93	WR*	05 39 34.3017622440	-68 44 09.155562972	14.291	15.626	15.204		15.620	WO3	66	0
135	Brey 93a	WR*	05 39 36.1929497064	-69 39 11.174764248						WN4	17	0
136	HD 38448	WR*	05 39 56.1038237112	-69 24 24.256772136	12.073	12.894	12.996	13.42	13.150	WR	47	0
137	HD 269956	WR*	05 40 07.5344560704	-69 24 31.913547048	12.043	13.014	13.166	13.51	13.205	WN2.5-3+B1V+O4V+O6.5V	50	0
138	Brey 95a	WR*	05 40 13.6760553072	-69 24 02.732485608		12.07	12.2			G:	20	0
139	Brey 96	WR*	05 40 50.7849505008	-69 26 31.687448928	14.965	15.549	15.718		15.494	WN3b	23	0
140	Brey 97	WR*	05 41 48.5696784312	-70 35 30.785347248	13.570	14.522	14.701	14.50	14.834	MN3ha+O5V	27	1
141	LHA 120-S 142	WR*	05 44 31.0203138528	-69 20 15.441467316	11.946	12.85	12.71	12.80	12.260	WN11h	33	0
142	Brey 98	WR*	05 44 53.7279459672	-67 10 36.132882708				14.571	14.45	WN3/5	32	0
143	Brey 99	WR*	05 45 24.1680967944	-67 05 56.733951696	14.221	14.69	14.81	14.88	14.371	WN4b(h)	38	0
144	LHA 120-S 61	WR*	05 45 51.9388258704	-67 14 25.937264544	10.870	11.86	11.95	12.09	11.931	WN11h	86	0

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