2009ApJ...702..940L

Query : 2009ApJ...702..940L

2009ApJ...702..940L - Astrophys. J., 702, 940-954 (2009/September-2)

Properties and origin of the high-velocity gas toward the Large Magellanic Cloud.

LEHNER N., STAVELEY-SMITH L. and HOWK J.C.

Abstract (from CDS):

In the spectra of 139 early-type Large Magellanic Cloud (LMC) stars observed with Far Ultraviolet Spectroscopic Explorer and with deep radio Parkes H I 21 cm observations along with those stars, we search for and analyze the absorption and emission from high-velocity gas at +90 ≤ v_LSR ≤ +175 km/s. The H I column density of the high-velocity clouds (HVCs) along these sightlines ranges from <10^18.4 to 10^19.2/cm2. The incidence of the HVC metal absorption is 70%, significantly higher than the H I emission occurrence of 32%. We find that the mean metallicity of the HVC is [O I/H I] = -0.51±^0.12_0.16. There is no strong evidence for a large variation in the HVC metallicity, implying that these HVCs have a similar origin and are part of the same complex. The mean and scatter of the HVC metallicities are more consistent with the present-day LMC oxygen abundance than that of the Small Magellanic Cloud or the MW. We find that on average [Si II/O I] = +0.48±^0.15_0.25 and [Fe II/O I] = +0.33±^0.14_0.21, implying that the HVC complex is dominantly ionized. The HVC complex has a multiphase structure with neutral (O I, Fe II), weakly ionized (Fe II, N II), and highly ionized (O VI) components, and has evidence of dust but no molecules. All the observed properties of the HVC can be explained by an energetic outflow from the LMC. This is the first example of a large (>10⁶ M_☉) HVC complex that is linked to stellar feedback occurring in a dwarf spiral galaxy.

Abstract Copyright: ∼

Journal keyword(s): galaxies: halos - galaxies: interactions - galaxies: kinematics and dynamics - galaxies: structure - Magellanic Clouds

VizieR on-line data: <Available at CDS (J/ApJ/702/940): table1.dat>

Simbad objects: 153

Full paper

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Number of rows : 153

N	Identifier	Otype	ICRS (J2000) RA	ICRS (J2000) DEC	Mag U	Mag B	Mag V	Mag R	Mag I	Sp type	#ref 1850 - 2026	#notes
1	NAME Magellanic Stream	HVC	00 32	-30.0						~	1079	1
2	NAME SMC	G	00 52 38.0	-72 48 01		2.79	2.2			~	12317	1
3	NAME Magellanic Clouds	GrG	03 00	-71.0						~	7988	0
4	NAME Magellanic Bridge	HI	03 11	-77.5						~	522	1
5	HD 268605	s*b	04 50 18.9258130824	-67 39 38.036838240	10.244	11.2	11.377		11.322	O9.5/B0Ia	99	0
6	SK -68 3	*	04 52 15.4670813184	-68 24 26.713040976		13.00	13.13			O9I	13	0
7	BI 12	EB*	04 53 00.8331558744	-68 01 32.324282004	12.26	13.30	13.435	13.64	13.665	O7.5III	15	0
8	LHA 120-S 6	Em*	04 53 06.5010706104	-68 03 22.796532648	12.663	13.725	13.796	13.98	14.112	O6.5V	21	0
9	SK -70 13	*	04 54 01.1591085504	-69 59 47.520410928	11.163	12.140	12.264	12.643	12.172	O9.7Iab	28	0
10	SK -65 1	*	04 54 06.5669443536	-65 35 22.356210228	11.658	12.420	12.50		12.671	OB	11	0
11	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
12	HD 32109	WR*	04 55 31.3415815464	-67 30 02.683346940	12.893	13.46	13.81	13.95	13.512	WN4b	81	0
13	SK -66 18	Pu*	04 55 59.8226723496	-65 58 29.732367612	12.394	13.294	13.467		13.725	O6.5III((f))	22	0
14	HD 32228	WR*	04 56 34.666	-66 28 26.34		10.685	10.830			WC4+O9.5II:	96	0
15	PGMW 3053	*	04 56 41.0475516240	-66 24 40.537858536		13.04	13.13			O6II(f+)	19	0
16	[HT83] alf	mul	04 56 43.231560	-66 25 02.58708	11.057	11.884	11.894	12.518	10.944	O6V	11	0
17	PGMW 3073	*	04 56 43.334	-66 24 54.55	12.895	14.734	13.868		14.181	O6.5V	13	0
18	PGMW 3102	*	04 56 45.3652438416	-66 24 46.424829456	12.601	13.319	13.416		13.502	O7V	14	0
19	PGMW 3120	*	04 56 46.7984540280	-66 24 46.862515368	11.700	12.496	12.466		12.464	O5.5V((f*))	37	0
20	SK -65 2	*	04 56 51.5287341912	-65 31 08.414341644	11.890	12.68	12.83		13.001	B1Ib	12	0
21	PGMW 3168	*	04 56 54.4599428448	-66 24 15.867618408		13.57	13.68			O7II(f)	22	0
22	PGMW 3204	*	04 56 58.7897	-66 24 40.710		13.85	14.02			O6.5V((f))	19	0
23	HD 268721	*	04 56 58.971	-66 24 38.16	11.374	11.935	11.859		11.281	O3III(f*)+OB	22	0
24	BI 42	Ro*	04 57 00.8846599752	-66 24 25.206714576	11.998	12.768	12.896	13.210	12.663	O8V	33	0
25	HD 268732	s*b	04 57 04.4395141656	-66 34 38.571040380	10.652	11.494	11.587			BC1Iab	60	0
26	SK -69 50	s*b	04 57 15.0943771440	-69 20 19.952673936	12.163	13.204	13.366	12.86	13.385	O7(n)(f)p	26	0
27	IRAS 04571-6627	mul	04 57 15.5	-66 23 14						~	53	1
28	SV* HV 2241	EB*	04 57 15.7351536912	-66 33 54.281614680		13.82	13.96			O6-8V-III((f))	34	0
29	HD 32340	Em*	04 57 16.253	-66 23 20.94		13.11	12.45	14.00		O3-O6V	78	0
30	HD 32402	WR*	04 57 24.0820685472	-68 23 57.120838692		12.53	12.69	13.24		WC	86	0
31	Brey 10a	WR*	04 57 27.4544617632	-67 39 02.864000880	12.213	13.314	13.496		13.564	O2If*/WN5	63	1
32	SK -68 16	*	04 57 37.7906705568	-68 24 35.919929952	11.683	12.714	12.906		13.052	O7III	20	0
33	SK -67 28	Pu*	04 58 39.2402576592	-67 11 18.643364988	11.340	12.082	12.269		12.228	B0.7Ia	23	0
34	HD 268847	WR*	04 59 51.5602106760	-67 56 55.438699560	13.658	14.21	14.58	14.75	14.426	WN4b	55	0
35	SK -70 32	*	05 00 10.2038383512	-70 11 09.425402808		12.90	13.04	13.32		OB	28	0
36	SK -65 21	s*b	05 01 22.2741446472	-65 41 47.884690176	11.119	12.08	12.70		12.373	O9.7Iab	41	0
37	HD 270952	WR*	05 01 23.0763876936	-65 52 33.206008764	10.944	11.871	12.07		12.187	O6Iaf	61	0
38	SK -68 26	s*b	05 01 32.2453117296	-68 10 42.937181508	10.822	11.728	11.85			BC2Ia	41	0
39	SV* HV 2274	EB*	05 02 40.7809489608	-68 24 21.495338172	13.298	13.984	14.127	14.192	14.390	~	79	0
40	HD 33133	WR*	05 03 08.9126630616	-66 40 57.492259824		12.46	12.63	12.85		WN7h	99	0
41	HD 268960	V*	05 03 12.6982527768	-69 01 37.040851884	11.218	12.01	12.166		12.443	O(f)+B1I?	20	0
42	SK -67 38	*	05 03 29.7199407960	-67 52 25.180286808	12.383	13.494	13.716		13.883	OB	20	0
43	Cl* NGC 1818 ROB D1	*	05 04 32.5	-66 24 51						~	10	0
44	SK -70 60	*	05 04 40.7778022320	-70 15 34.497999576	12.609	13.646	13.914		13.967	O4V	29	0
45	SK -70 69	*	05 05 18.6717716496	-70 25 49.874974104	12.586	13.616	13.854		14.074	O3V(f)	42	0
46	SK -68 41	*	05 05 27.1146438696	-68 10 02.642123460	10.855	11.868	12.01		12.086	B0.7Ia	59	0
47	HD 269074	*	05 06 16.0418710536	-70 29 35.671642404	10.291	11.0	11.1		11.443	OB	25	0
48	SK -70 79	*	05 06 37.2738884832	-70 29 24.192350448	11.703	12.704	12.766		12.723	B0III	27	0
49	SK -67 46	*	05 07 01.5977486568	-67 37 29.666031852	11.406	12.228	12.339		12.436	B1.5I	19	0
50	HD 269050	s*b	05 07 20.4218668824	-68 32 08.569322196	10.593	11.581	11.54	11.46	11.55	B0Ia(e?)	89	0
51	SK -71 8	*	05 07 23.2588955184	-71 11 53.964381372	12.243	12.995	13.156		13.299	B0II:	21	0
52	SV* HV 5622	EB*	05 09 29.2077023784	-68 55 02.610801516		14.81	14.798	15.08	14.929	B0V	19	0
53	HD 34169	WR*	05 09 40.4196726384	-68 53 24.752391396	12.773	13.47	13.65	14.02	13.697	WN4b+O5:	67	1
54	HD 269227	WR*	05 13 54.2756276088	-69 31 46.665067440	11.429	11.98	11.918	12.13	10.557	WN9/10+M2Ia	167	0
55	SK -67 69	*	05 14 20.0729621208	-67 08 03.171550632	11.950	13.012	13.040		13.330	O3III	31	0
56	HD 269314	*	05 17 05.6370489840	-70 19 23.041514280	11.243	12.344	12.376		12.431	B0I	17	0
57	HD 269333	WR*	05 18 19.2104631720	-69 11 40.657335684	10.375	11.23	11.29	11.47	11.412	WN+BI	63	0
58	BI 128	Pu*	05 18 19.7743040424	-65 49 14.638969236	12.796	13.447	13.745		14.055	O9V	15	0
59	HD 269357	s*b	05 18 59.4790204920	-69 12 54.801550908		11.89	12.10			O6Ib(f)	63	0
60	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	92	0
61	SK -67 76	*	05 20 05.7171800112	-67 21 10.618641612	11.575	12.542	12.42		12.845	B0Ia	22	0
62	SK -65 44	*	05 20 18.4431048816	-65 24 08.084147652	12.599	13.414	13.643		13.868	OB:	11	0
63	SK -65 47	s*b	05 20 54.7193542416	-65 27 17.880205176	11.451	12.270	12.466		12.741	O4If	25	0
64	LHA 120-S 28	WR*	05 21 57.6946827024	-65 49 00.222663684	12.395	13.12	13.32	13.62	13.295	WN6h	52	0
65	2MASS J05221392-6758372	*	05 22 13.9389623352	-67 58 37.314042960	12.88	13.98	14.20			O7V((f))	7	0
66	SK -71 19	*	05 22 15.7474585104	-71 21 39.298224096	13.153	14.031	14.227		14.436	O6IΠ	18	0
67	HD 36063	WR*	05 22 22.5295596384	-71 35 58.154210736	11.583	12.43	12.66	12.85	12.602	WN7	78	0
68	HD 269445	WR*	05 22 59.7855849168	-68 01 46.635948408	10.79	11.77	11.520	11.41	10.979	Ofpe/WN9	137	0
69	HD 36156	WR*	05 23 10.0576745256	-71 20 50.843953284	11.732	12.54	12.74	12.97	12.960	WC	46	0
70	HD 269463	*	05 23 28.4351506080	-68 12 23.342994432		11.99	12.05			OB	25	0
71	SK -66 78	*	05 23 30.3660894480	-66 42 11.342038032	11.463	12.164	12.22		11.241	OB	15	0
72	NAME LMC	G	05 23 34.6	-69 45 22			0.4			~	19090	0
73	SK -69 124	*	05 25 18.2515805760	-69 03 11.489785740	11.583	12.664	12.826		12.791	OB	25	0
74	SK -67 101	*	05 25 56.2422042240	-67 30 28.813234608		12.46	12.63			O8II((f))	41	1
75	HD 36402	WR*	05 26 03.9637892880	-67 29 57.087864096		11.25	11.621	11.65		(WC)	143	0
76	SK -67 105	SB*	05 26 06.1884853848	-67 10 56.784543384	11.785	12.27	12.42		11.661	OB	46	0
77	HD 269525	*	05 26 15.2190917352	-67 29 59.904231972		11.564	11.758	12.126		O8II	33	0
78	SK -67 107	s*b	05 26 20.6747956344	-67 29 55.652908164		12.38	12.50			O8.5II	25	0
79	[L72] LH 54-425	SB*	05 26 24.2505	-67 30 17.194		12.915	13.130			O3V+O5V	17	0
80	SK -67 108	*	05 26 26.4631628832	-67 37 20.458414380		12.320	12.525			O4-5III	26	0
81	HD 36521	WR*	05 26 30.2591541144	-68 50 27.500574192		12.156	12.317	12.529		WC4+O6III/V+O	86	0
82	HD 269546	WR*	05 26 45.3202797576	-68 49 52.787839260	9.00	9.83	9.86	9.76	9.76	WN5b(h)+B3I	111	0
83	BI 170	*	05 26 47.6917783584	-69 06 12.016345140	11.823	12.914	13.116		12.975	O9.5Ib	26	0
84	SK -67 111	s*b	05 26 48.0782169672	-67 29 29.782796892		12.33	12.42			O6Iaf(n)pv	53	0
85	BI 173	*	05 27 09.9440507208	-69 07 56.452079568	11.85	12.86	13.00			O7.5III((f))p	36	0
86	LHA 120-S 35	Em*	05 27 17.8391797320	-66 22 05.633592636	12.458	11.5	13.056	13.14	12.484	~	36	1
87	SV* HV 2543	EB*	05 27 27.3922227816	-67 11 54.502222164	11.913	13.014	13.206		13.055	OB	28	0
88	SK -67 118	*	05 27 33.3079203168	-67 17 30.344613648		12.79	12.99			O7V	15	0
89	SK -70 91	**	05 27 33.5728977024	-70 36 47.950130916	11.369	12.55	12.78		12.937	O2III(f*)+OB	28	0
90	SK -67 119	*	05 27 40.5702977400	-67 18 10.268619408		13.12	13.33			OB	11	0
91	SK -66 100	*	05 27 45.4472444328	-66 55 15.293259480	12.227	12.976	13.204		13.501	O6II(f)	48	0
92	CD-69 310	*	05 27 51.2040062256	-69 00 55.364646168	11.13	10.96	10.70			F2I	26	0
93	W61 15-4	s*y	05 28 21.9667721256	-68 59 48.271678800		11.84	11.45			F5Ia	47	0
94	HD 271294	*	05 28 39.4513417632	-65 39 00.631527804	11.919	12.40	12.56		12.240	OB	21	0
95	SK -66 106	*	05 29 00.9965765448	-66 38 27.790072368		12.64	12.72			OB	19	0
96	SV* HV 982	EB*	05 29 52.3071229680	-69 09 22.559372640		14.76	14.648	14.99	14.761	~	48	0
97	SK -70 97	s*b	05 30 11.2516938792	-70 51 42.189853464	11.903	12.839	13.012		13.194	O9.7Iab	11	0
98	HD 37026	WR*	05 30 12.1637529576	-67 26 08.329055928	12.853	13.16	13.53	13.56	13.856	WC	78	0
99	NAME LMC 3 Supergiant Shell	sh	05 30 26	-69 07.9						~	73	0
100	BI 184	*	05 30 30.6622260408	-71 02 31.604520048	13.033	13.830	13.926		13.954	B0.5V	28	0
101	SK -67 150	*	05 30 31.7098838016	-67 00 53.369450748	11.241	12.034	12.24		10.856	OB	15	0
102	W61 18-3	*	05 30 36.3583344456	-67 17 42.880325964		14.01	14.18			B2II	17	0
103	HD 37248	WR*	05 30 38.703	-71 01 47.80	12.319	12.983	12.99	13.39	13.413	WC4+O9	58	0
104	SK -71 41	s*b	05 30 40.1497148784	-71 05 37.084358652	11.906	12.643	12.775		12.769	O9.7Iab	23	0
105	Cl* NGC 2004 BBBC 485	*	05 30 47.3766213336	-67 17 23.256925080	12.982	13.740	13.863		13.925	B1.5Ib	18	0
106	HD 269668	*	05 31 00.8452572672	-68 53 57.095854332	11.919	10.161	12.01		10.592	OB	26	0
107	HD 269676	**	05 31 15.634248	-71 04 09.90516	11.134	11.417	11.547	12.061	12.191	O4If	88	0
108	HD 269687	WR*	05 31 25.5247745448	-69 05 38.556251700	10.86	11.78	11.87	12.05		WN11h	122	0
109	HD 269692	WR*	05 31 32.8704053376	-67 40 46.605246924	13.592	14.28	14.49	14.70	14.519	WN4b	47	0
110	NAME LMC 4 Supergiant Shell	sh	05 31 33	-66 40.5						~	183	0
111	HD 269698	s*b	05 31 44.2080798984	-67 38 01.374839556	9.520	12.00	12.22	12.47	11.167	O4Ia	117	0
112	SK -67 169	*	05 31 51.5898307488	-67 02 22.242829128		12.06	12.18			B1Ia	30	0
113	SK -67 167	s*b	05 31 51.9123196824	-67 39 41.372080308	11.243	12.364	12.586		11.819	O4If+n	45	0
114	HD 269702	s*b	05 31 52.1192227056	-67 34 20.768696508		11.69	11.99			O8I(f)p	35	0
115	HD 269714	Cl*	05 32 11.4796719648	-67 41 15.666704556	9.463	12.06	12.77		11.026	OB	23	0
116	BI 196	*	05 32 19.1652439368	-67 49 50.359938276	13.36	14.40	14.60			O9V	6	0
117	X LMC X-4	HXB	05 32 49.5556042296	-66 22 13.202721768		13.9	14.0	14.290		O8III	714	0
118	HD 269748	WR*	05 33 10.5705227928	-67 42 43.053720228	12.093	13.054	13.186		12.828	WN4b+O8:	50	0
119	SK -67 191	*	05 33 34.0158776232	-67 30 19.741489992	12.153	13.214	13.436		14.838	O8V	35	0
120	SV* HV 5936	EB*	05 33 38.8196073288	-66 37 39.969719472		15.01	14.741	15.25	14.911	~	35	0
121	BI 208	*	05 33 57.3355514112	-67 24 20.179711404	12.742	13.716	13.921		14.141	O7V	19	0
122	HD 37680	WR*	05 34 19.2493989720	-69 45 10.295445528	12.807	12.98	13.25	13.21	13.490	WC	81	1
123	OGLE BRIGHT-LMC-ECL-17	EB*	05 34 41.3495543376	-69 31 38.667576432	12.739	13.672	14.050	13.79	13.966	O3If+O6V	27	0
124	SK -67 205	*	05 34 52.8640886424	-67 16 20.416172556		13.51	13.71			OB:	9	0
125	HD 269810	Em*	05 35 13.8977747136	-67 33 27.542449260		12.08	12.22	12.53		O3III(f*)	113	0
126	SN 1987A	SN*	05 35 27.98840	-69 16 11.1134						SNIIpec	5203	2
127	BI 237	*	05 36 14.6333257920	-67 39 19.168082640	12.865	13.790	13.830		13.948	O2V(f*)	47	0
128	HD 38029A	WR*	05 36 54.633	-69 11 38.08						WC4	55	1
129	SK -66 169	s*b	05 36 54.6614083464	-66 38 22.427577744		12.43	12.56			O9.7Ia+	37	0
130	HD 38029	**	05 36 55.16856	-69 11 37.6584	14.523			11.91	11.680	~	64	0
131	HD 38029B	s*b	05 36 55.1865323232	-69 11 37.582606608						B1Ia+	60	1
132	HD 269889	Pu*	05 37 02.4204862512	-66 38 37.031705268	11.381	10.246	12.19		11.390	O9Ia	29	0
133	SK -66 172	*	05 37 05.3893162560	-66 21 34.989059484		13.01	13.1			O2III(f*)+OB	45	0
134	BI 253	*	05 37 34.4595697440	-69 01 10.178659452	12.765	13.650	13.669		13.742	O2V(f*)	60	0
135	HD 269896	s*b	05 37 49.1356176384	-68 55 01.639049016	11.338	9.493	11.449	11.49		ON9.7Ia+	102	0
136	SK -68 137	*	05 38 24.6792593784	-68 52 32.951140752	12.243	13.274	13.346		13.242	O2III-I(f)	48	0
137	RMC 136	Cl*	05 38 42.396	-69 06 03.36		5.81	5.40			~	2236	2
138	HD 38282	WR*	05 38 53.3783458680	-69 02 00.895545204		10.98	11.11	11.26		WN5/6h+WN6/7h	192	1
139	HD 269927	**	05 38 58.856976	-69 29 22.47504			10.68	11.23		B0I+O7If	27	0
140	RMC 149	*	05 39 58.7447958816	-69 44 04.073554644	11.645	12.442	12.517		12.227	O8.5II((f))	36	0
141	SK -66 185	s*b	05 42 30.4986791808	-66 18 10.827963288	11.981	12.922	13.11		13.225	B0Iab	11	0
142	[MLD95] LMC 2-703	*	05 43 08.4079257384	-67 50 53.344768380	13.062	13.964	14.150		14.465	O9.5V	15	0
143	[L72] LH 114-7	*	05 43 13.0005	-67 51 16.007		13.41	13.66			O2III(f*)+OV	21	0
144	SK -67 250	EB*	05 43 15.6408168672	-67 51 10.456101396	11.314	12.631	12.541		12.781	OB	20	0
145	[MLD95] LMC 2-755	*	05 43 16.0583019840	-67 49 51.526577604		14.15	14.37			O7V	16	0
146	BI 272	*	05 44 23.1088099248	-67 14 29.211340416	12.163	13.127	13.201		13.524	O7II	29	0
147	LHA 120-S 61	WR*	05 45 51.9388258704	-67 14 25.937264544	10.870	11.86	11.95	12.09	11.931	WN11h	100	0
148	HD 270145	s*b	05 48 49.6513961040	-70 03 57.837376476	10.903	12.110	12.166			O6.5Iaf	59	1
149	HD 270220	s*b	05 50 22.9856958720	-68 11 24.660617280	11.051	11.960	12.001		12.171	B0.7Ia	28	0
150	HD 270196	s*b	05 51 20.7793116768	-70 17 09.299979960	10.038	11.490	11.6		11.646	B1.5Ia	59	0
151	NAME Magellanic Leading Arm	reg	11 26	-82.0						~	105	0
152	M 5	GlC	15 18 33.22	+02 04 51.7			5.95			~	2095	0
153	NAME HVC Complex C	HVC	16 34.8	+63 07						~	273	1

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