2004A&A...416..111B

Query : 2004A&A...416..111B

2004A&A...416..111B - Astronomy and Astrophysics, volume 416111-118 (2004/3-2)

Carbon star survey of Local Group galaxies. X. Wolf-Lundmark-Melotte a galaxy with an extreme C/M ratio.

BATTINELLI P. and DEMERS S.

Abstract (from CDS):

We used the CFH12K wide field camera to survey the carbon star population of the Wolf-Lundmark-Melotte system using the CN-TiO technique. 149 C stars are identified with a mean <I≥20.28, corresponding to <MI≥-4.65, a mean luminosity similar to what we found in other irregular galaxies. Star counts in and around the main body of WLM reveal that its stellar distribution is quite elliptical (ε=0.58) with major and minor axes of 26' and 11'. Comparison of the density profile of C stars and old red giants shows that their scale lengths differ by only 15% pointing to mixed populations. WLM is found to be unique among dwarf irregular galaxies by having essentially a handful of early-type AGB M stars thus leading to an extreme C/M ratio. We conclude that like NGC 3109, WLM is a disk shaped galaxy, seen at an inclination of ∼69° and devoid of an extended spherical stellar halo.

Abstract Copyright: ∼

Journal keyword(s): galaxies: individual: Wolf-Lundmark-Melotte

VizieR on-line data: <Available at CDS (J/A+A/416/111): table2.dat>

Nomenclature: Table 2: [BD2004a] NNN (Nos 1-149).

Simbad objects: 158

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Number of rows : 158
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 [BD2004a] 1 C* 00 01 37.34 -15 26 19.7       21.227 20.179 ~ 1 0
2 [BD2004a] 2 C* 00 01 44.38 -15 30 58.6       21.729 20.744 ~ 1 0
3 [BD2004a] 3 C* 00 01 47.96 -15 27 47.4       21.886 20.708 ~ 1 0
4 [BD2004a] 4 C* 00 01 48.79 -15 27 16.7       21.75 20.744 ~ 1 0
5 [BD2004a] 5 C* 00 01 49.33 -15 23 52.0       21.266 20.196 ~ 1 0
6 [BD2004a] 6 C* 00 01 49.54 -15 32 17.9       21.972 20.800 ~ 1 0
7 [BD2004a] 7 C* 00 01 50.56 -15 28 30.1       21.494 20.086 ~ 1 0
8 [BD2004a] 8 C* 00 01 50.69 -15 27 31.5       21.987 20.823 ~ 1 0
9 [BD2004a] 9 C* 00 01 50.79 -15 34 33.8       21.292 19.910 ~ 1 0
10 [BD2004a] 10 C* 00 01 50.88 -15 26 51.1       21.371 20.389 ~ 1 0
11 [BD2004a] 11 C* 00 01 51.06 -15 33 34.4       21.584 20.550 ~ 1 0
12 [BD2004a] 12 C* 00 01 51.70 -15 25 36.7       22.439 20.958 C 2 0
13 [BD2004a] 13 C* 00 01 52.40 -15 29 49.1       22.168 20.820 ~ 1 0
14 [BD2004a] 14 C* 00 01 52.49 -15 25 54.7       21.735 20.421 ~ 1 0
15 [BD2004a] 16 C* 00 01 52.64 -15 31 00.1       21.339 20.289 ~ 1 0
16 [BD2004a] 15 C* 00 01 52.64 -15 26 20.3       21.445 20.209 ~ 1 0
17 [BD2004a] 17 C* 00 01 52.98 -15 24 19.0       21.44 20.230 ~ 1 0
18 [BD2004a] 18 C* 00 01 53.05 -15 30 12.9       21.295 20.313 ~ 1 0
19 [BD2004a] 19 C* 00 01 53.08 -15 31 13.5       21.657 20.520 ~ 1 0
20 [BD2004a] 20 C* 00 01 53.43 -15 25 08.7       21.436 20.158 ~ 1 0
21 [BD2004a] 21 C* 00 01 53.45 -15 35 00.2       21.735 20.797 ~ 1 0
22 [BD2004a] 22 C* 00 01 54.04 -15 26 34.2       21.754 20.674 ~ 1 0
23 [BD2004a] 23 C* 00 01 54.06 -15 29 11.1       21.637 20.404 ~ 2 0
24 [BD2004a] 24 C* 00 01 54.49 -15 27 17.4       21.674 20.142 ~ 2 0
25 [BD2004a] 25 C* 00 01 54.53 -15 23 31.3       21.317 20.194 ~ 1 0
26 [BD2004a] 26 C* 00 01 54.62 -15 27 54.1       21.286 20.260 ~ 2 0
27 [BD2004a] 27 C* 00 01 54.73 -15 21 02.9       21.837 20.736 ~ 1 0
28 [BD2004a] 28 C* 00 01 54.76 -15 26 03.8       21.456 20.394 ~ 1 0
29 [BD2004a] 29 C* 00 01 54.87 -15 28 16.7       21.313 20.230 ~ 2 0
30 [BD2004a] 30 C* 00 01 54.89 -15 22 48.4       22.662 21.375 ~ 1 0
31 [BD2004a] 31 C* 00 01 55.61 -15 26 47.7       21.11 20.145 ~ 2 0
32 [BD2004a] 32 C* 00 01 55.63 -15 21 07.7       21.038 19.991 ~ 1 0
33 [BD2004a] 33 C* 00 01 55.63 -15 26 16.7       21.544 20.363 ~ 1 0
34 [BD2004a] 34 C* 00 01 55.70 -15 31 55.4       21.787 20.484 ~ 1 0
35 [BD2004a] 35 C* 00 01 55.72 -15 31 56.5       21.5 20.133 ~ 1 0
36 [BD2004a] 37 C* 00 01 55.75 -15 32 27.4       22.472 21.398 ~ 1 0
37 [BD2004a] 36 C* 00 01 55.75 -15 23 26.7       21.201 20.224 ~ 1 0
38 [BD2004a] 38 C* 00 01 55.78 -15 27 01.8       21.209 20.238 ~ 2 0
39 [BD2004a] 39 C* 00 01 55.81 -15 26 24.1       21.547 20.402 ~ 1 0
40 [BD2004a] 40 C* 00 01 55.92 -15 25 56.0       21.226 20.189 ~ 1 0
41 [BD2004a] 41 C* 00 01 56.03 -15 26 44.0       21.174 19.956 ~ 2 0
42 [BD2004a] 42 C* 00 01 56.08 -15 23 44.3       21.079 20.121 ~ 1 0
43 [BD2004a] 43 C* 00 01 56.16 -15 29 05.3       20.926 19.995 ~ 2 0
44 [BD2004a] 44 C* 00 01 56.19 -15 28 05.1       21.373 20.373 ~ 2 0
45 [BD2004a] 45 C* 00 01 56.29 -15 27 35.3       22.232 21.104 ~ 2 0
46 [BD2004a] 46 C* 00 01 56.30 -15 22 53.3       21.93 20.619 ~ 1 0
47 [BD2004a] 47 C* 00 01 56.50 -15 28 46.4       22.299 20.746 ~ 2 0
48 [BD2004a] 48 C* 00 01 56.58 -15 25 22.6       21.04 20.110 ~ 1 0
49 [BD2004a] 49 C* 00 01 56.70 -15 22 34.0       21.663 20.394 ~ 1 0
50 [BD2004a] 50 C* 00 01 56.72 -15 27 47.6       22.319 21.078 ~ 2 0
51 [BD2004a] 51 C* 00 01 56.78 -15 33 49.6       21.231 20.315 ~ 1 0
52 [BD2004a] 52 C* 00 01 56.96 -15 23 40.2       21.134 20.158 ~ 1 0
53 [BD2004a] 53 C* 00 01 56.98 -15 24 49.7       21.631 20.516 ~ 1 0
54 [BD2004a] 54 C* 00 01 57.02 -15 25 26.1       21.047 19.965 ~ 1 0
55 [BD2004a] 55 C* 00 01 57.13 -15 22 27.1       21.277 20.108 ~ 1 0
56 [BD2004a] 56 C* 00 01 57.19 -15 23 30.9       20.678 19.742 ~ 1 0
57 [BD2004a] 57 C* 00 01 57.48 -15 25 03.0       21.131 20.042 ~ 1 0
58 [BD2004a] 58 C* 00 01 57.69 -15 29 10.8       21.478 20.161 ~ 2 0
59 MCG-03-01-015 G 00 01 57.9 -15 27 50   11.50 11.10 10.93   ~ 782 2
60 [BD2004a] 59 C* 00 01 58.15 -15 30 19.5       21.228 20.226 ~ 2 0
61 [BD2004a] 60 C* 00 01 58.21 -15 30 19.6       21.265 20.283 ~ 2 0
62 [BD2004a] 62 C* 00 01 58.22 -15 29 59.3   22.33 22.61 21.031 19.642 C 3 0
63 [BD2004a] 61 C* 00 01 58.23 -15 31 35.7       21.496 20.547 ~ 1 0
64 [BD2004a] 63 C* 00 01 58.38 -15 27 54.5       20.989 20.003 ~ 2 0
65 [BD2004a] 64 C* 00 01 58.45 -15 33 44.6       21.419 20.119 ~ 1 0
66 [BD2004a] 65 C* 00 01 58.49 -15 27 59.7       21.447 20.308 ~ 2 0
67 [BD2004a] 66 C* 00 01 58.57 -15 26 32.2       21.597 20.613 ~ 1 0
68 [BD2004a] 67 C* 00 01 58.65 -15 25 05.7       20.667 19.545 ~ 1 0
69 [BD2004a] 68 C* 00 01 58.66 -15 25 47.6       21.364 20.337 ~ 1 0
70 [BD2004a] 69 C* 00 01 58.76 -15 25 13.7       21.756 20.507 ~ 1 0
71 [BD2004a] 70 C* 00 01 58.93 -15 29 31.6       20.756 19.835 ~ 2 0
72 [BD2004a] 71 C* 00 01 58.97 -15 27 36.7       21.098 20.000 ~ 2 0
73 [BD2004a] 72 C* 00 01 58.99 -15 29 26.5       21.566 20.420 ~ 2 0
74 [BD2004a] 73 C* 00 01 59.08 -15 30 20.3       21.064 20.023 ~ 2 0
75 [BD2004a] 74 C* 00 01 59.11 -15 28 20.5       21.409 20.137 ~ 2 0
76 [BD2004a] 75 C* 00 01 59.19 -15 27 00.7   21.55 21.93 20.649 19.581 C 3 0
77 [BD2004a] 76 C* 00 01 59.20 -15 30 02.8       21.208 20.155 ~ 2 0
78 [BD2004a] 77 C* 00 01 59.29 -15 28 12.0       21.318 20.212 ~ 2 0
79 [BD2004a] 78 C* 00 01 59.35 -15 29 24.2       21.966 20.848 ~ 2 0
80 [BD2004a] 79 C* 00 01 59.42 -15 25 49.7       20.977 19.887 ~ 1 0
81 [BD2004a] 80 C* 00 01 59.56 -15 33 03.8       20.582 19.436 ~ 1 0
82 [BD2004a] 81 C* 00 01 59.62 -15 34 46.7       21.39 20.408 ~ 1 0
83 [BD2004a] 82 C* 00 01 59.76 -15 30 38.7       21.398 20.252 ~ 2 0
84 [BD2004a] 83 C* 00 01 59.81 -15 29 41.7       21.248 20.237 ~ 2 0
85 [BD2004a] 84 C* 00 01 59.86 -15 29 41.3       21.222 20.231 ~ 2 0
86 [BD2004a] 85 C* 00 01 59.95 -15 27 18.0       21.085 20.034 ~ 2 0
87 [BD2004a] 86 C* 00 01 59.97 -15 29 41.5       21.865 20.207 ~ 2 0
88 [BD2004a] 88 C* 00 02 00.02 -15 29 41.1       21.767 20.257 ~ 2 0
89 [BD2004a] 87 C* 00 02 00.02 -15 26 04.8       21.07 20.133 ~ 1 0
90 [BD2004a] 89 C* 00 02 00.06 -15 25 28.4       20.677 19.647 ~ 1 0
91 [BD2004a] 90 C* 00 02 00.09 -15 29 19.1       21.057 20.131 ~ 2 0
92 [BD2004a] 91 C* 00 02 00.12 -15 26 36.8       21.172 20.121 ~ 2 0
93 [BD2004a] 92 C* 00 02 00.29 -15 30 53.3       21.309 20.071 ~ 2 0
94 [BD2004a] 93 C* 00 02 00.49 -15 29 58.2       20.64 19.591 ~ 2 0
95 [BD2004a] 94 C* 00 02 00.55 -15 29 58.0       20.588 19.636 ~ 2 0
96 [BD2004a] 95 C* 00 02 00.64 -15 28 15.2       21.121 20.134 ~ 2 0
97 [BD2004a] 96 C* 00 02 00.67 -15 21 25.4       20.313 19.295 ~ 1 0
98 [BD2004a] 97 C* 00 02 00.71 -15 29 28.6       21.026 20.077 ~ 1 0
99 [BD2004a] 98 C* 00 02 00.77 -15 27 24.5       21.37 20.444 ~ 2 0
100 [BD2004a] 99 C* 00 02 00.83 -15 31 26.4       22.071 20.956 ~ 1 0
101 [BD2004a] 100 C* 00 02 01.16 -15 25 44.3       20.892 19.921 ~ 1 0
102 [BD2004a] 101 C* 00 02 01.19 -15 29 55.6       21.247 20.010 ~ 2 0
103 [BD2004a] 102 C* 00 02 01.23 -15 33 13.7       21.573 20.643 ~ 1 0
104 [BD2004a] 103 C* 00 02 01.35 -15 27 14.5       21.019 19.868 ~ 2 0
105 [BD2004a] 104 C* 00 02 01.40 -15 25 38.4       21.933 20.650 ~ 1 0
106 [BD2004a] 105 C* 00 02 01.45 -15 28 36.1   23.36 21.81 20.085 19.016 C 3 0
107 [BD2004a] 106 C* 00 02 01.47 -15 29 19.5       21.143 20.104 ~ 2 0
108 [BD2004a] 107 C* 00 02 01.52 -15 27 28.0       21.195 19.938 ~ 2 0
109 [BD2004a] 108 C* 00 02 01.53 -15 24 55.1       21.555 20.386 ~ 1 0
110 [BD2004a] 110 C* 00 02 01.69 -15 22 37.2       21.425 20.278 ~ 1 0
111 [BD2004a] 109 C* 00 02 01.69 -15 22 22.0       20.933 19.779 ~ 1 0
112 [BD2004a] 111 C* 00 02 01.75 -15 29 26.3       21.895 20.834 ~ 2 0
113 [BD2004a] 112 C* 00 02 02.07 -15 27 46.9       21.756 20.427 ~ 2 0
114 [BD2004a] 113 C* 00 02 02.11 -15 28 29.0       21.596 20.538 ~ 2 0
115 [BD2004a] 114 C* 00 02 02.18 -15 26 21.6       21.986 20.471 ~ 1 0
116 [BD2004a] 115 C* 00 02 02.42 -15 35 36.0       20.912 19.899 ~ 1 0
117 [BD2004a] 116 C* 00 02 02.47 -15 25 17.8       22.024 20.541 ~ 1 0
118 [BD2004a] 117 C* 00 02 02.48 -15 25 50.4       21.299 20.123 ~ 1 0
119 [BD2004a] 118 C* 00 02 02.52 -15 26 10.1       22.051 20.957 ~ 1 0
120 [BD2004a] 119 C* 00 02 02.52 -15 28 11.2       21.286 20.000 ~ 2 0
121 [BD2004a] 120 C* 00 02 02.91 -15 27 54.0       22.119 20.709 ~ 2 0
122 [BD2004a] 121 C* 00 02 02.99 -15 29 57.4       21.096 19.903 ~ 2 0
123 [BD2004a] 122 C* 00 02 02.99 -15 31 40.0       21.222 20.065 ~ 1 0
124 [BD2004a] 123 C* 00 02 03.08 -15 24 24.8       20.448 19.470 ~ 1 0
125 [BD2004a] 124 C* 00 02 03.18 -15 28 23.0       21.709 20.310 ~ 2 0
126 [BD2004a] 125 C* 00 02 03.24 -15 26 16.8       21.844 20.468 ~ 1 0
127 [BD2004a] 126 C* 00 02 03.44 -15 31 32.1       22.261 20.906 ~ 1 0
128 [BD2004a] 127 C* 00 02 03.87 -15 27 06.7       21.548 20.414 ~ 2 0
129 [BD2004a] 128 C* 00 02 03.92 -15 25 43.0       21.332 20.327 ~ 1 0
130 [BD2004a] 129 C* 00 02 03.96 -15 31 16.6       21.125 20.083 ~ 1 0
131 [BD2004a] 130 C* 00 02 04.14 -15 26 29.4       21.363 20.277 ~ 1 0
132 [BD2004a] 131 C* 00 02 04.29 -15 30 20.2       21.427 20.427 ~ 2 0
133 [BD2004a] 132 C* 00 02 04.35 -15 30 20.4       21.432 20.497 ~ 2 0
134 [BD2004a] 133 C* 00 02 04.39 -15 28 06.4       21.18 20.264 ~ 2 0
135 [BD2004a] 134 C* 00 02 04.82 -15 26 46.0       20.939 19.777 ~ 2 0
136 [BD2004a] 135 C* 00 02 05.00 -15 37 22.5       21.655 20.349 ~ 1 0
137 [BD2004a] 136 C* 00 02 05.13 -15 25 45.7       20.976 19.852 ~ 1 0
138 [BD2004a] 137 C* 00 02 05.58 -15 29 34.6       21.417 20.412 ~ 1 0
139 [BD2004a] 138 C* 00 02 05.6281153584 -15 33 16.782880752       22.07 20.715 C 2 0
140 [BD2004a] 139 C* 00 02 05.76 -15 28 08.2       21.501 20.383 ~ 2 0
141 [BD2004a] 140 C* 00 02 05.99 -15 30 51.1       21.569 20.536 ~ 2 0
142 [BD2004a] 141 C* 00 02 06.33 -15 22 45.4       21.209 20.264 ~ 1 0
143 [BD2004a] 142 C* 00 02 06.35 -15 20 06.2       21.423 20.429 ~ 1 0
144 [BD2004a] 143 C* 00 02 06.47 -15 24 28.8       21.095 19.934 ~ 1 0
145 [BD2004a] 144 C* 00 02 06.51 -15 25 30.0       21.392 20.454 ~ 1 0
146 [BD2004a] 145 C* 00 02 07.74 -15 32 15.6       20.889 19.878 ~ 1 0
147 [BD2004a] 146 C* 00 02 08.05 -15 27 01.6       21.258 20.215 ~ 2 0
148 [BD2004a] 147 C* 00 02 08.34 -15 25 30.9       21.65 20.657 ~ 1 0
149 [BD2004a] 148 C* 00 02 11.28 -15 34 47.2       21.697 20.593 ~ 1 0
150 [BD2004a] 149 C* 00 02 11.92 -15 30 17.5       21.513 20.508 ~ 1 0
151 NGC 147 GiG 00 33 12.120 +48 30 31.46   12.0 9.5     ~ 720 1
152 NGC 185 Sy2 00 38 57.9400026024 +48 20 15.035874648   9.10 9.2     ~ 840 1
153 IC 1613 GiC 01 04 48.4071 +02 07 10.185   10.42 10.01 9.77   ~ 1316 2
154 Z 36-12 H2G 10 00 00.8217342072 +05 20 09.533389560 12.77 12.25 11.89 11.71   ~ 569 0
155 NGC 3109 AG? 10 03 06.877 -26 09 34.46 11.10 10.42 10.04 9.91   ~ 825 2
156 MCG-01-26-030 H2G 10 11 00.5 -04 41 30 12.48 12.13 11.93 11.78   ~ 789 2
157 NGC 6822 G 19 44 56.199 -14 47 51.29   18 8.1     ~ 1661 0
158 NAME Local Group GrG ~ ~           ~ 9325 0

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