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 ≤ vLSR ≤ +175 km/s. The H I column density of the high-velocity clouds (HVCs) along these sightlines ranges from <1018.4 to 1019.2/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±0.120.16. 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±0.150.25 and [Fe II/O I] = +0.33±0.140.21, 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

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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 - 2024 		#notes
1 NAME Magellanic Stream HVC 00 32 -30.0           ~ 971 1
2 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 11149 1
3 NAME Magellanic Clouds GrG 03 00 -71.0           ~ 7066 0
4 NAME Magellanic Bridge HI 03 11 -77.5           ~ 447 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 86 0
6 SK -68 3 * 04 52 15.4670813184 -68 24 26.713040976   13.00 13.13     O9I 12 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 13 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 18 0
9 SK -70 13 * 04 54 01.1591085504 -69 59 47.520410928 11.163 12.140 12.264 12.643 12.172 OB 22 0
10 SK -65 1 * 04 54 06.5669443536 -65 35 22.356210228 11.658 12.420 12.50   12.671 OB 9 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 74 0
13 SK -66 18 Pu* 04 55 59.8226723496 -65 58 29.732367612 12.394 13.294 13.467   13.725 O6V((f)) 17 0
14 HD 32228 WR* 04 56 34.666 -66 28 26.34   10.685 10.830     WC4+O9.5II: 93 0
15 PGMW 3053 * 04 56 41.0475516240 -66 24 40.537858536   13.04 13.13     O6II(f+) 11 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 12 0
18 PGMW 3102 * 04 56 45.3652438416 -66 24 46.424829456 12.601 13.319 13.416   13.502 O7V 12 0
19 PGMW 3120 * 04 56 46.7984540280 -66 24 46.862515368 11.700 12.496 12.466   12.464 O5.5V((f*)) 30 0
20 SK -65 2 * 04 56 51.5287341912 -65 31 08.414341644 11.890 12.68 12.83   13.001 OB 8 0
21 PGMW 3168 * 04 56 54.4599428448 -66 24 15.867618408   13.57 13.68     O7II(f) 16 0
22 PGMW 3204 * 04 56 58.7897 -66 24 40.710   13.85 14.02     O6.5V((f)) 15 0
23 HD 268721 * 04 56 58.971 -66 24 38.16 11.374 11.935 11.859   11.281 O3III(f*)+OB 21 0
24 BI 42 Ro* 04 57 00.8846599752 -66 24 25.206714576 11.998 12.768 12.896 13.210 12.663 O8V 25 0
25 HD 268732 SB* 04 57 04.4395141656 -66 34 38.571040380 10.652 11.494 11.587     OB 47 0
26 SK -69 50 * 04 57 15.0943771440 -69 20 19.952673936 12.163 13.204 13.366 12.86 13.385 O7(f)(n)p 16 0
27 IRAS 04571-6627 mul 04 57 15.5 -66 23 14           ~ 52 1
28 SV* HV 2241 V* 04 57 15.7351536912 -66 33 54.281614680   13.82 13.96     O6-8V-III((f)) 30 0
29 HD 32340 Em* 04 57 16.253 -66 23 20.94   13.11 12.45 14.00   O3-O6V 77 0
30 HD 32402 WR* 04 57 24.0820685472 -68 23 57.120838692   12.53 12.69 13.24   WC 78 0
31 Brey 10a WR* 04 57 27.4544617632 -67 39 02.864000880 12.213 13.314 13.496   13.564 O2If*/WN5 57 1
32 SK -68 16 * 04 57 37.7906705568 -68 24 35.919929952 11.683 12.714 12.906   13.052 OB: 13 0
33 SK -67 28 Pu* 04 58 39.2402576592 -67 11 18.643364988 11.340 12.082 12.269   12.228 B0.7Ia 22 0
34 HD 268847 WR* 04 59 51.5602106760 -67 56 55.438699560 13.658 14.21 14.58 14.75 14.426 WN4b 54 0
35 SK -70 32 * 05 00 10.2038383512 -70 11 09.425402808   12.90 13.04 13.32   OB 23 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 40 0
37 HD 270952 WR* 05 01 23.0763876936 -65 52 33.206008764 10.944 11.871 12.07   12.187 O6Iaf+ 54 0
38 SK -68 26 s*b 05 01 32.2453117296 -68 10 42.937181508 10.822 11.728 11.85     BC2Ia 29 0
39 SV* HV 2274 EB* 05 02 40.7809489608 -68 24 21.495338172 13.298 13.984 14.127 14.192 14.390 ~ 77 0
40 HD 33133 WR* 05 03 08.9126630616 -66 40 57.492259824   12.46 12.63 12.85   WN7h 93 0
41 HD 268960 V* 05 03 12.6982527768 -69 01 37.040851884 11.218 12.01 12.166   12.443 O(f)+B1I? 19 0
42 SK -67 38 * 05 03 29.7199407960 -67 52 25.180286808 12.383 13.494 13.716   13.883 OB 19 0
43 Cl* NGC 1818 ROB D1 * 05 04 32.5 -66 24 51           ~ 9 0
44 SK -70 60 * 05 04 40.7778022320 -70 15 34.497999576 12.609 13.646 13.914   13.967 O4V 24 0
45 SK -70 69 * 05 05 18.6717716496 -70 25 49.874974104 12.586 13.616 13.854   14.074 O3V(f) 39 0
46 SK -68 41 * 05 05 27.1146438696 -68 10 02.642123460 10.855 11.868 12.01   12.086 B0.5Ia 51 0
47 HD 269074 * 05 06 16.0418710536 -70 29 35.671642404 10.291 11.0 11.1   11.443 OB 22 0
48 SK -70 79 * 05 06 37.2738884832 -70 29 24.192350448 11.703 12.704 12.766   12.723 OB 17 0
49 SK -67 46 * 05 07 01.5977486568 -67 37 29.666031852 11.406 12.228 12.339   12.436 B1.5I 17 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?) 70 0
51 SK -71 8 EB* 05 07 23.2588955184 -71 11 53.964381372 12.243 12.995 13.156   13.299 O9II 13 0
52 SV* HV 5622 EB* 05 09 29.2077023784 -68 55 02.610801516   14.81 14.798 15.08 14.929 ~ 13 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: 66 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 160 0
55 SK -67 69 * 05 14 20.0729621208 -67 08 03.171550632 11.950 13.012 13.040   13.330 O3III 25 0
56 HD 269314 * 05 17 05.6370489840 -70 19 23.041514280 11.243 12.344 12.376   12.431 B0I 15 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 59 0
58 BI 128 Pu* 05 18 19.7743040424 -65 49 14.638969236 12.796 13.447 13.745   14.055 O9V 10 0
59 HD 269357 * 05 18 59.4790204920 -69 12 54.801550908   11.89 12.10     O6Ib(f) 55 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 88 0
61 SK -67 76 * 05 20 05.7171800112 -67 21 10.618641612 11.575 12.542 12.42   12.845 B0Ia 20 0
62 SK -65 44 * 05 20 18.4431048816 -65 24 08.084147652 12.599 13.414 13.643   13.868 OB: 10 0
63 SK -65 47 s*b 05 20 54.7193542416 -65 27 17.880205176 11.451 12.270 12.466   12.741 O4If 19 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 46 0
65 2MASS J05221392-6758372 * 05 22 13.9389623352 -67 58 37.314042960 12.88 13.98 14.20     O7V((f)) 6 0
66 SK -71 19 * 05 22 15.7474585104 -71 21 39.298224096 13.153 14.031 14.227   14.436 OB 10 0
67 HD 36063 WR* 05 22 22.5295596384 -71 35 58.154210736 11.583 12.43 12.66 12.85 12.602 WN7 71 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 124 0
69 HD 36156 WR* 05 23 10.0576745256 -71 20 50.843953284 11.732 12.54 12.74 12.97 12.960 WC 44 0
70 HD 269463 * 05 23 28.4351506080 -68 12 23.342994432   11.99 12.05     OB 24 0
71 SK -66 78 * 05 23 30.3660894480 -66 42 11.342038032 11.463 12.164 12.22   11.241 OB 14 0
72 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 17434 0
73 SK -69 124 * 05 25 18.2515805760 -69 03 11.489785740 11.583 12.664 12.826   12.791 OB 24 0
74 SK -67 101 * 05 25 56.2422042240 -67 30 28.813234608   12.46 12.63     O8II((f)) 33 1
75 HD 36402 WR* 05 26 03.9637892880 -67 29 57.087864096   11.25 11.621 11.65   (WC) 138 0
76 SK -67 105 EB* 05 26 06.1884853848 -67 10 56.784543384 11.785 12.27 12.42   11.661 OB 39 0
77 HD 269525 * 05 26 15.2190917352 -67 29 59.904231972   11.564 11.758 12.126   B0I 26 0
78 SK -67 107 * 05 26 20.6747956344 -67 29 55.652908164   12.38 12.50     B0I 18 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     OB 20 0
81 HD 36521 WR* 05 26 30.2591541144 -68 50 27.500574192   12.156 12.317 12.529   WC4+O6III/V+O 84 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 108 0
83 BI 170 * 05 26 47.6917783584 -69 06 12.016345140 11.823 12.914 13.116   12.975 O9.5Ib 25 0
84 SK -67 111 s*b 05 26 48.0782169672 -67 29 29.782796892   12.33 12.42     O6Iaf(n)pv 46 0
85 BI 173 * 05 27 09.9440507208 -69 07 56.452079568 11.85 12.86 13.00     O8III 26 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 ~ 30 1
87 SV* HV 2543 EB* 05 27 27.3922227816 -67 11 54.502222164 11.913 13.014 13.206   13.055 OB 23 0
88 SK -67 118 * 05 27 33.3079203168 -67 17 30.344613648   12.79 12.99     OB 9 0
89 SK -70 91 ** 05 27 33.5728977024 -70 36 47.950130916 11.369 12.55 12.78   12.937 O2III(f*)+OB 27 0
90 SK -67 119 * 05 27 40.5702977400 -67 18 10.268619408   13.12 13.33     OB 9 0
91 SK -66 100 * 05 27 45.4472444328 -66 55 15.293259480 12.227 12.976 13.204   13.501 O6II(f) 44 0
92 CD-69 310 * 05 27 51.2040062256 -69 00 55.364646168 11.13 10.96 10.70     F2I 22 0
93 W61 15-4 s*y 05 28 21.9667721256 -68 59 48.271678800   11.84 11.45     F5Ia 44 0
94 HD 271294 * 05 28 39.4513417632 -65 39 00.631527804 11.919 12.40 12.56   12.240 OB 20 0
95 SK -66 106 * 05 29 00.9965765448 -66 38 27.790072368   12.64 12.72     OB 18 0
96 SV* HV 982 EB* 05 29 52.3071229680 -69 09 22.559372640   14.76 14.648 14.99 14.761 ~ 47 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 76 0
99 NAME LMC 3 Supergiant Shell sh 05 30 26 -69 07.9           ~ 72 0
100 BI 184 * 05 30 30.6622260408 -71 02 31.604520048 13.033 13.830 13.926   13.954 B0.5V 17 0
101 SK -67 150 * 05 30 31.7098838016 -67 00 53.369450748 11.241 12.034 12.24   10.856 OB 13 0
102 W61 18-3 * 05 30 36.3583344456 -67 17 42.880325964   14.01 14.18     B2II 15 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 56 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 13 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 17 0
106 HD 269668 * 05 31 00.8452572672 -68 53 57.095854332 11.919 10.161 12.01   10.592 OB 23 0
107 HD 269676 ** 05 31 15.634248 -71 04 09.90516 11.134 11.417 11.547 12.061 12.191 O6+O9: 82 0
108 HD 269687 WR* 05 31 25.5247745448 -69 05 38.556251700 10.86 11.78 11.87 12.05   WN11h 110 0
109 HD 269692 WR* 05 31 32.8704053376 -67 40 46.605246924 13.592 14.28 14.49 14.70 14.519 WN4b 46 0
110 NAME LMC 4 Supergiant Shell sh 05 31 33 -66 40.5           ~ 176 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 111 0
112 SK -67 169 * 05 31 51.5898307488 -67 02 22.242829128   12.06 12.18     B1Ia 29 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 40 0
114 HD 269702 * 05 31 52.1192227056 -67 34 20.768696508   11.69 11.99     O8I(f)p 29 0
115 HD 269714 Cl* 05 32 11.4796719648 -67 41 15.666704556 9.463 12.06 12.77   11.026 OB 22 0
116 BI 196 * 05 32 19.1652439368 -67 49 50.359938276 13.36 14.40 14.60     O9V 5 0
117 X LMC X-4 HXB 05 32 49.5556042296 -66 22 13.202721768   13.9 14.0     O8III 669 0
118 HD 269748 WR* 05 33 10.5705227928 -67 42 43.053720228 12.093 13.054 13.186   12.828 WN4b+O8: 49 0
119 SK -67 191 * 05 33 34.0158776232 -67 30 19.741489992 12.153 13.214 13.436   14.838 O8V 28 0
120 SV* HV 5936 EB* 05 33 38.8196073288 -66 37 39.969719472   15.01 14.741 15.25 14.911 ~ 33 0
121 BI 208 * 05 33 57.3355514112 -67 24 20.179711404 12.742 13.716 13.921   14.141 O7V 18 0
122 HD 37680 WR* 05 34 19.2493989720 -69 45 10.295445528 12.807 12.98 13.25 13.21 13.490 WC 74 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 23 0
124 SK -67 205 * 05 34 52.8640886424 -67 16 20.416172556   13.51 13.71     OB: 8 0
125 HD 269810 Em* 05 35 13.8977747136 -67 33 27.542449260   12.08 12.22 12.53   O3III(f*) 106 0
126 SN 1987A SN* 05 35 28.020 -69 16 11.07           SNIIpec 4938 2
127 BI 237 * 05 36 14.6333257920 -67 39 19.168082640 12.865 13.790 13.830   13.948 O2V(f*) 35 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+ 33 0
130 HD 38029 ** 05 36 55.16856 -69 11 37.6584 14.523     11.91 11.680 ~ 61 0
131 HD 38029B s*b 05 36 55.1865323232 -69 11 37.582606608           B1Ia+ 56 1
132 HD 269889 Pu* 05 37 02.4204862512 -66 38 37.031705268 11.381 10.246 12.19   11.390 OB 18 0
133 SK -66 172 * 05 37 05.3893162560 -66 21 34.989059484   13.01 13.1     OB 41 0
134 BI 253 * 05 37 34.4595697440 -69 01 10.178659452 12.765 13.650 13.669   13.742 O2V(f*) 46 0
135 HD 269896 s*b 05 37 49.1356176384 -68 55 01.639049016 11.338 9.493 11.449 11.49   ON9.7Ia+ 86 0
136 SK -68 137 * 05 38 24.6792593784 -68 52 32.951140752 12.243 13.274 13.346   13.242 OB 40 0
137 RMC 136 Cl* 05 38 42.396 -69 06 03.36   5.81 5.40     ~ 2019 2
138 HD 38282 WR* 05 38 53.3783458680 -69 02 00.895545204   10.98 11.11 11.26   WN5/6h+WN6/7h 170 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)) 32 0
141 SK -66 185 s*b 05 42 30.4986791808 -66 18 10.827963288 11.981 12.922 13.11   13.225 B0Iab 10 0
142 [MLD95] LMC 2-703 * 05 43 08.4079257384 -67 50 53.344768380 13.062 13.964 14.150   14.465 O9.5V 14 0
143 [L72] LH 114-7 * 05 43 13.0005 -67 51 16.007   13.41 13.66     O2III(f*)+OV 15 0
144 SK -67 250 EB* 05 43 15.6408168672 -67 51 10.456101396 11.314 12.631 12.541   12.781 OB 18 0
145 [MLD95] LMC 2-755 * 05 43 16.0583019840 -67 49 51.526577604   14.15 14.37     O7V 15 0
146 BI 272 * 05 44 23.1088099248 -67 14 29.211340416 12.163 13.127 13.201   13.524 O7III 23 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 86 0
148 HD 270145 s*b 05 48 49.6513961040 -70 03 57.837376476 10.903 12.110 12.166     O6.5Iaf 48 1
149 HD 270220 s*b 05 50 22.9856958720 -68 11 24.660617280 11.051 11.960 12.001   12.171 B0.7Ia 27 0
150 HD 270196 s*b 05 51 20.7793116768 -70 17 09.299979960 10.038 11.490 11.6   11.646 B1.5Ia 54 0
151 NAME Magellanic Leading Arm reg 11 26 -82.0           ~ 93 0
152 M 5 GlC 15 18 33.22 +02 04 51.7     5.95     ~ 1978 0
153 NAME HVC Complex C HVC 16 34.8 +63 07           ~ 260 1

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