2005MNRAS.357..645A

Query : 2005MNRAS.357..645A

2005MNRAS.357..645A - Mon. Not. R. Astron. Soc., 357, 645-655 (2005/February-3)

The deepest Hubble Space Telescope far-ultraviolet observations in the Large Magellanic Cloud.

ALMOZNINO E., BROSCH N., SHARA M. and ZUREK D.

Abstract (from CDS):

We present a new analysis of the deepest pure-ultraviolet (UV) observations with the highest angular resolution ever performed. A set of 12 exposures with the Hubble Space Telescope (HST) WFPC2 and F160BW filter obtained in parallel observing mode, which cover ∼12 arcmin2 in the Large Magellanic Cloud (LMC), north of the bar and in the `general field' region of the LMC, contain stars with far-UV monochromatic magnitudes as faint as 22 mag. The 198 detected UV sources represent an accumulated exposure of ≥ 2x104 s and reveal stars as faint as mUV≃ 20 mag. We combine these observations with deep UBVI charge-coupled device (CCD) imaging of the same region reaching as faint as V≃ 26 mag, and reselect probable optical counterparts for the UV sources. After a two-stage search-and-analysis process, we detect robust counterparts for 129 stars. These are mostly upper main-sequence stars, from early B to early A spectral classes, with several F stars. We point out the lack of blue supergiants, which could have been easily detected in our survey. We measure a foreground extinction E(B-V) ≃ 0.08 mag by Galactic dust and a surface density of star formation rate twice the average Galactic value. These observations indicate that relatively recent star formation took place even off the bar of the LMC.

Abstract Copyright: 2005 RAS

Journal keyword(s): stars: formation - galaxies: individual: Large Magellanic Cloud - galaxies: irregular - galaxies: stellar content

VizieR on-line data: <Available at CDS (J/MNRAS/357/645): table2.dat>

Nomenclature: Table 2, col(9): [ABS2005] NNNNNN N=127 among 830000.

CDS comments: P. 646 : SNR N49 = LHA 120-N 49, N132D = LHA 120-N 132D.

Simbad objects: 138

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Number of rows : 138
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 SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 12317 1
2 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 19090 0
3 NGC 1948 As* 05 24 20.00 -66 24 12.0   10.81 10.61     ~ 110 0
4 MCSNR J0525-6938 SNR 05 25 02.3 -69 38 39           ~ 446 1
5 2MASS J05250269-6930132 UV 05 25 02.69 -69 30 13.3 16.358 16.771 16.818   16.799 ~ 2 0
6 [BSM99] 25 UV 05 25 04.619 -69 30 20.24 15.917 16.480 16.561   16.612 ~ 2 0
7 [BSM99] 21 UV 05 25 06.085 -69 29 27.74 17.655 18.230 18.320   18.380 ~ 2 0
8 [BSM99] 20 UV 05 25 07.318 -69 30 04.32 17.477 17.951 17.998   17.994 ~ 2 0
9 [BSM99] 5 UV 05 25 08.753 -69 30 43.39 17.464 17.836 17.893   17.870 ~ 2 0
10 2MASS J05250985-6930410 * 05 25 09.8598425232 -69 30 40.957963200 13.869 14.680 14.845   14.999 ~ 2 0
11 [BSM99] 19 UV 05 25 10.765 -69 30 08.47 17.937 18.271 18.277   18.256 ~ 2 0
12 [BSM99] 54 UV 05 25 11.608 -69 31 39.53 18.162 18.450 18.424   18.368 ~ 2 0
13 [BSM99] 15 UV 05 25 11.744 -69 30 10.03 18.235 18.474 18.401   18.359 ~ 2 0
14 [BSM99] 2 UV 05 25 12.468 -69 30 39.53 17.536 18.116 18.201   18.256 ~ 2 0
15 [BSM99] 51 UV 05 25 12.589 -69 31 10.06 18.132 18.496 18.509   18.593 ~ 2 0
16 [BSM99] 1 UV 05 25 12.886 -69 30 37.13 17.808 18.054 17.859   17.422 ~ 2 0
17 [BSM99] 17 UV 05 25 13.428 -69 29 32.66 17.063 17.621 17.672   17.602 ~ 2 0
18 [BSM99] 56 UV 05 25 13.531 -69 31 21.99 16.441 16.910 16.986   17.095 ~ 2 0
19 [BSM99] 58 UV 05 25 13.637 -69 31 41.34 17.825 18.111 18.079   17.999 ~ 2 0
20 [ABS2005] 45258 EB* 05 25 13.9598647641 -69 29 44.109243810 15.594 16.281 16.415   16.551 ~ 3 0
21 [BSM99] 16 UV 05 25 14.077 -69 29 26.70 17.987 18.453 18.404   18.346 ~ 2 0
22 [BSM99] 59 UV 05 25 14.783 -69 31 24.48 17.663 17.950 17.920   17.903 ~ 2 0
23 [BSM99] 13 UV 05 25 14.938 -69 29 49.07 15.709 16.382 16.505   16.636 ~ 2 0
24 [BSM99] 60 UV 05 25 15.289 -69 31 18.25 17.445 17.884 17.953   18.035 ~ 2 0
25 OGLE J052515.47-693043.0 Be? 05 25 15.3752622472 -69 30 43.035023712 14.511 15.337 15.367   15.128 ~ 5 0
26 [BSM99] 52 UV 05 25 15.438 -69 30 39.84 18.186 18.551 18.561   18.484 ~ 2 0
27 [BSM99] 64 UV 05 25 15.676 -69 31 51.71 16.292 16.828 16.931   17.071 ~ 2 0
28 [BSM99] 10 UV 05 25 15.811 -69 30 07.98 17.675 18.165 18.195   18.153 ~ 2 0
29 [BSM99] 63 UV 05 25 15.824 -69 31 24.24 18.659 18.821 18.840   18.779 ~ 2 0
30 [BSM99] 12 UV 05 25 15.895 -69 29 40.17 18.074 18.541 18.460   18.065 ~ 2 0
31 [BSM99] 57 UV 05 25 16.011 -69 30 48.25 16.191 16.659 16.736   16.728 ~ 2 0
32 [BSM99] 11 UV 05 25 16.430 -69 29 41.14 16.258 16.854 16.967   17.059 ~ 2 0
33 [BSM99] 67 UV 05 25 16.617 -69 31 48.79 18.125 18.489 18.492   18.483 ~ 2 0
34 [BSM99] 24 UV 05 25 17.123 -69 29 49.75 18.117 18.402 18.411   18.383 ~ 2 0
35 [BSM99] 65 UV 05 25 17.258 -69 31 35.62 18.140 18.542 18.607   18.692 ~ 2 0
36 [BSM99] 69 UV 05 25 19.533 -69 31 33.58 18.550 18.860 18.810   18.637 ~ 2 0
37 [BSM99] 70 UV 05 25 20.100 -69 31 32.96 18.393 18.571 18.557   18.537 ~ 2 0
38 [BSM99] 72 UV 05 25 20.468 -69 31 49.74 17.979 18.464 18.530   18.616 ~ 2 0
39 [BSM99] 83 UV 05 25 21.202 -69 31 54.46 18.235 18.430 18.450   18.529 ~ 2 0
40 [BSM99] 39 UV 05 25 21.510 -69 29 50.51 18.220 18.598 18.655   18.698 ~ 2 0
41 [BSM99] 31 UV 05 25 21.550 -69 30 41.15 17.204 17.799 17.897   17.954 ~ 2 0
42 [BSM99] 71 UV 05 25 21.800 -69 31 03.49 17.711 18.171 18.192   18.227 ~ 2 0
43 [BSM99] 36 UV 05 25 22.082 -69 30 09.89 17.497 17.695 17.424   16.895 ~ 2 0
44 [BSM99] 78 UV 05 25 22.145 -69 31 48.68 17.021 17.522 17.602   17.676 ~ 2 0
45 OGLE LMC-ECL-15242 EB* 05 25 22.25 -69 31 37.4 16.294 16.789 16.740 16.74 19.198 ~ 6 0
46 [BSM99] 82 UV 05 25 22.780 -69 31 44.73 17.953 18.324 18.387   18.389 ~ 2 0
47 [BSM99] 40 UV 05 25 22.788 -69 29 51.16 18.496 18.808 18.499   17.758 ~ 2 0
48 [BSM99] 33 UV 05 25 23.224 -69 30 40.35 17.115 17.602 17.677   17.680 ~ 2 0
49 [BSM99] 76 UV 05 25 23.333 -69 31 54.54 16.310 16.893 16.996   17.169 ~ 2 0
50 [BSM99] 253 UV 05 25 23.350 -69 30 20.76 18.582 18.778 18.669   18.287 ~ 2 0
51 [BSM99] 130 UV 05 25 23.422 -69 29 28.92 18.740 19.006 19.000   18.889 ~ 2 0
52 [BSM99] 44 UV 05 25 23.887 -69 29 47.28 16.655 17.194 17.247   17.292 ~ 2 0
53 [BSM99] 35 UV 05 25 23.991 -69 30 19.50 17.514 18.012 18.068   18.087 ~ 2 0
54 [BSM99] 32 UV 05 25 24.590 -69 30 45.32 15.799 16.507 16.643   16.753 ~ 2 0
55 [BSM99] 77 UV 05 25 25.366 -69 31 43.37 15.196 15.817 15.982   16.130 ~ 2 0
56 [BSM99] 79 UV 05 25 25.604 -69 31 46.04 16.943 17.499 17.561   17.695 ~ 2 0
57 [BSM99] 250 UV 05 25 25.710 -69 30 06.51 18.601 18.679 18.601   18.488 ~ 2 0
58 [BSM99] 248 UV 05 25 26.336 -69 30 34.98 18.921 19.252 19.261   19.225 ~ 2 0
59 [BSM99] 80 UV 05 25 26.789 -69 31 25.25 15.777 16.357 16.475   16.630 ~ 2 0
60 [BSM99] 168 UV 05 25 27.127 -69 30 07.56 14.436 14.449 14.230   13.944 ~ 2 0
61 [BSM99] 34 UV 05 25 27.136 -69 30 28.18 17.752 18.254 18.306   18.332 ~ 2 0
62 [BSM99] 37b UV 05 25 27.185 -69 30 09.12 18.530 18.581 18.526   18.311 ~ 2 0
63 [BSM99] 37a UV 05 25 27.433 -69 30 09.89 17.022 17.335 17.419   17.243 ~ 2 0
64 [BSM99] 302 UV 05 25 27.777 -69 32 06.37 17.431 17.821 17.880   17.931 ~ 2 0
65 [BSM99] 81 UV 05 25 27.921 -69 31 09.27 18.470 18.754 18.692   18.635 ~ 2 0
66 [BSM99] 41 UV 05 25 28.300 -69 29 57.07 18.739 19.047 19.072   19.027 ~ 2 0
67 [BSM99] 170 UV 05 25 28.786 -69 29 44.57 17.796 18.141 18.123   18.088 ~ 2 0
68 [BSM99] 135 UV 05 25 28.825 -69 29 10.50 16.827 17.360 17.420   17.473 ~ 2 0
69 [BSM99] 132 UV 05 25 29.013 -69 29 24.40 17.289 17.655 17.448   16.966 ~ 2 0
70 [BSM99] 305 UV 05 25 29.216 -69 31 58.32 14.314 14.393 14.325   14.235 ~ 2 0
71 [BSM99] 148 UV 05 25 29.839 -69 31 26.88 15.781 16.374 16.468   16.617 ~ 2 0
72 [BSM99] 306 UV 05 25 30.031 -69 31 54.93 18.686 18.974 19.000   18.955 ~ 2 0
73 [BSM99] 307 UV 05 25 30.072 -69 31 57.06 17.261 17.801 17.868   18.038 ~ 2 0
74 [BSM99] 147 UV 05 25 30.346 -69 31 09.18 17.714 18.046 18.065   18.083 ~ 2 0
75 [BSM99] 304 UV 05 25 30.445 -69 31 37.84 16.971 17.447 17.546   17.616 ~ 2 0
76 [BSM99] 129 UV 05 25 31.087 -69 29 52.35 18.354 18.737 18.801   18.871 ~ 2 0
77 [BSM99] 308 UV 05 25 31.113 -69 31 30.78 15.491 16.083 16.177   16.336 ~ 2 0
78 [BSM99] 310 UV 05 25 31.467 -69 31 53.20 18.504 18.796 18.835   18.946 ~ 2 0
79 [BSM99] 131 UV 05 25 31.605 -69 29 35.35 16.772 17.309 17.355   17.360 ~ 2 0
80 [BSM99] 133 UV 05 25 31.777 -69 29 22.96 16.402 16.885 16.900   16.885 ~ 2 0
81 [BSM99] 149 UV 05 25 32.299 -69 30 49.79 17.317 17.738 17.781   17.756 ~ 2 0
82 [BSM99] 309 UV 05 25 32.572 -69 31 15.62 18.464 18.713 18.728   18.768 ~ 2 0
83 [BSM99] 164 UV 05 25 32.990 -69 30 29.06 18.722 19.044 19.006   18.895 ~ 2 0
84 [BSM99] 213 UV 05 25 33.725 -69 31 19.20 15.932 16.456 16.530   16.654 ~ 2 0
85 [BSM99] 124 UV 05 25 33.743 -69 30 13.89 17.342 17.746 17.746   17.726 ~ 2 0
86 [BSM99] 162 UV 05 25 33.807 -69 30 31.64 19.109 19.407 19.385   19.399 ~ 2 0
87 [BSM99] 214 UV 05 25 33.882 -69 31 17.06 17.686 18.097 18.090   18.117 ~ 2 0
88 [BSM99] 314 UV 05 25 34.566 -69 31 26.21 18.368 18.626 18.569   18.534 ~ 2 0
89 [BSM99] 160 UV 05 25 34.631 -69 30 25.36 18.308 18.716 18.727   18.644 ~ 2 0
90 [BSM99] 216 UV 05 25 34.780 -69 31 37.80 18.828 19.113 19.165   19.259 ~ 2 0
91 [BSM99] 315 UV 05 25 34.864 -69 31 52.49 19.112 19.359 19.332   19.332 ~ 2 0
92 [BSM99] 212 UV 05 25 35.128 -69 30 49.61 18.740 18.878 18.875   18.843 ~ 2 0
93 [BSM99] 296 UV 05 25 35.816 -69 29 53.59 17.929 18.395 18.485   18.740 ~ 2 0
94 [BSM99] 183 UV 05 25 35.871 -69 30 31.07 18.173 18.331 18.307   17.936 ~ 2 0
95 [BSM99] 161 UV 05 25 35.909 -69 29 53.87 17.929 18.395 18.485   18.740 ~ 2 0
96 [BSM99] 215 UV 05 25 36.188 -69 30 50.29 15.807 16.364 16.380   16.556 ~ 2 0
97 [BSM99] 180 UV 05 25 36.224 -69 30 38.05 18.207 18.493 18.482   18.395 ~ 2 0
98 [BSM99] 319 UV 05 25 36.283 -69 32 03.13 18.458 18.708 18.609   18.439 ~ 2 0
99 [BSM99] 182 UV 05 25 36.310 -69 30 36.03 17.742 18.080 18.089   18.056 ~ 2 0
100 [BSM99] 186 UV 05 25 36.480 -69 30 17.29 18.268 18.477 18.458   18.429 ~ 2 0
101 [BSM99] 320 UV 05 25 37.057 -69 31 53.86 17.885 18.001 17.966   17.937 ~ 2 0
102 [BSM99] 316 UV 05 25 37.354 -69 31 30.38 18.984 19.218 19.267   19.382 ~ 2 0
103 [BSM99] 184 UV 05 25 37.413 -69 30 29.90 17.683 18.109 18.118   18.073 ~ 2 0
104 [BSM99] 217 UV 05 25 37.422 -69 31 05.48 18.119 18.538 18.578   18.552 ~ 2 0
105 [BSM99] 318 UV 05 25 37.605 -69 31 34.39 17.767 17.952 17.927   17.919 ~ 2 0
106 [BSM99] 283 UV 05 25 37.768 -69 30 42.00 16.815 17.332 17.405   17.468 ~ 2 0
107 [BSM99] 321 UV 05 25 38.327 -69 31 34.14 18.502 18.793 18.826   18.949 ~ 2 0
108 [BSM99] 202 UV 05 25 38.456 -69 30 02.98 18.656 18.925 18.874   18.760 ~ 2 0
109 [BSM99] 325 UV 05 25 38.940 -69 32 17.20 15.964 16.528 16.613   16.727 ~ 2 0
110 [BSM99] 221 UV 05 25 39.361 -69 31 38.42 15.139 15.857 16.010   16.191 ~ 2 0
111 [BSM99] 324 UV 05 25 39.381 -69 32 03.18 18.385 18.703 18.722   18.813 ~ 2 0
112 [BSM99] 219 UV 05 25 39.800 -69 31 04.67 16.474 16.886 16.874   16.790 ~ 2 0
113 [BSM99] 326 UV 05 25 39.966 -69 32 10.44 16.626 17.068 17.079   17.048 ~ 2 0
114 [BSM99] 205 UV 05 25 40.098 -69 29 50.34 17.537 17.979 17.997   17.908 ~ 2 0
115 [BSM99] 323 UV 05 25 40.628 -69 31 37.92 17.460 17.666 17.629   17.584 ~ 2 0
116 [BSM99] 272 UV 05 25 41.076 -69 31 11.26 18.738 19.027 19.012   18.974 ~ 2 0
117 [BSM99] 273 UV 05 25 41.579 -69 31 10.96 16.849 17.121 17.106   17.119 ~ 2 0
118 [BSM99] 204 UV 05 25 41.606 -69 29 52.55 18.392 18.778 18.832   18.816 ~ 2 0
119 [BSM99] 201 UV 05 25 41.664 -69 30 10.52 17.709 18.201 18.227   18.214 ~ 2 0
120 [BSM99] 222 UV 05 25 41.768 -69 31 08.63 16.624 17.017 17.065   17.115 ~ 2 0
121 [BSM99] 187 UV 05 25 42.442 -69 30 23.55 17.356 17.689 17.708   17.666 ~ 2 0
122 [BSM99] 185 UV 05 25 42.451 -69 30 31.82 17.426 17.900 17.890   17.870 ~ 2 0
123 OGLE J052542.69-692957.0 Be? 05 25 42.5794332359 -69 29 57.062861489 14.722 15.535 15.571   15.391 ~ 4 0
124 [BSM99] 188 UV 05 25 42.605 -69 30 22.35 16.641 17.225 17.324   17.413 ~ 2 0
125 [BSM99] 223 UV 05 25 42.697 -69 31 17.83 17.808 18.038 17.997   17.858 ~ 2 0
126 [BSM99] 181 UV 05 25 42.880 -69 30 46.50 17.043 17.603 17.679   17.700 ~ 2 0
127 [BSM99] 224 UV 05 25 43.086 -69 31 17.91 19.132 19.406 19.357   19.290 ~ 2 0
128 [BSM99] 227 UV 05 25 44.034 -69 31 52.10 17.438 17.873 17.932   17.984 ~ 2 0
129 [BSM99] 225 UV 05 25 44.324 -69 31 19.30 18.506 18.870 18.841   18.827 ~ 2 0
130 [BSM99] 200 UV 05 25 44.372 -69 30 16.89 16.894 17.199 17.196   17.130 ~ 2 0
131 OGLE J052544.52-693018.5 Be? 05 25 44.4017091003 -69 30 18.520070306 14.463 15.222 15.308   15.292 ~ 4 0
132 [BSM99] 206 UV 05 25 45.901 -69 29 57.45 17.021 17.600 17.681   17.721 ~ 2 0
133 SV* HV 12228 EB* 05 25 46.35 -69 31 03.9 15.797 16.246 16.168 16.29 15.943 ~ 8 0
134 SNR J052559-660453 SNR 05 26 00.4 -66 05 02     12.71     ~ 456 2
135 LH 53 As* 05 26.1 -66 14           ~ 32 0
136 SN 1987A SN* 05 35 27.98840 -69 16 11.1134           SNIIpec 5203 2
137 NAME 30 Dor Nebula SFR 05 38 36.0 -69 05 11           ~ 1276 2
138 NAME SDG G 18 55 19.0 -30 32 43   4.5 3.6     ~ 2438 2

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