2009A&A...493..871S


Query : 2009A&A...493..871S

2009A&A...493..871S - Astronomy and Astrophysics, volume 493, 871-892 (2009/1-3)

The rotation curves shapes of late-type dwarf galaxies.

SWATERS R.A., SANCISI R., VAN ALBADA T.S. and VAN DER HULST J.M.

Abstract (from CDS):

We present rotation curves derived from HI observations for a sample of 62 galaxies that have been observed as part of the Westerbork HI Survey of Spiral and Irregular Galaxies (WHISP) project. These rotation curves have been derived by interactively fitting model data cubes to the observed cubes. This procedure takes the rotation curve shape, the HI distribution, the inclination, and the size of the beam into account, and makes it possible to correct for the effects of beam smearing. A comparison with higher spatial resolution Hα rotation curves available in the literature shows that there is general agreement between the two. The late-type dwarf galaxies in our sample have rotation-curve shapes that are similar to those of late-type spiral galaxies, in the sense that their rotation curves, when expressed in units of disk scale lengths, rise as steeply in the inner parts and start to flatten at two disk scale lengths. None of the galaxies in our sample have solid-body rotation curves that extend beyond three disk scale lengths. The logarithmic slopes between two disk scale lengths and the last measured point on the rotation curve is similar between late-type dwarf and spiral galaxies. Thus, whether the flat part of the rotation curve is reached or not seems to depend more on the extent of the rotation curve than on its amplitude. We also find that the outer rotation curve shape does not strongly depend on luminosity, at least for galaxies fainter than MR~-19. We find that in spiral galaxies and even in the central regions of late-type dwarf galaxies, the shape of the central distribution of light and the inner rise of the rotation curve are related. This implies that galaxies with stronger central concentrations of light also have higher central mass densities, and it suggests that the luminous mass dominates the gravitational potential in the central regions, even in low surface brightness dwarf galaxies.

Abstract Copyright:

Journal keyword(s): surveys - galaxies: dwarf - galaxies: irregular - galaxies: kinematics and dynamics

Simbad objects: 118

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Number of rows : 118
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 IC 5378 IG 00 02 37.9163011153 +16 38 37.535313724   14.9       ~ 22 0
2 NGC 55 GiG 00 14 53.602 -39 11 47.86 8.54 8.58 7.87 7.84   ~ 723 2
3 NGC 247 LSB 00 47 08.554 -20 45 37.44 10.11 9.61 9.10 8.87   ~ 389 2
4 NGC 300 GiG 00 54 53.4460065856 -37 41 03.182962667 8.83 8.69 8.13 7.46   ~ 1368 2
5 UGC 731 G 01 10 44.00 +49 36 07.9   17       ~ 87 0
6 IC 1727 GiP 01 47 29.890 +27 20 00.06   12.54 11.98 11.77   ~ 179 0
7 UGC 1281 LSB 01 49 31.71 +32 35 16.2   13.0       ~ 146 0
8 NGC 801 AGN 02 03 44.7940775128 +38 15 31.624590609   14.23 13.47     ~ 166 0
9 NGC 891 H2G 02 22 32.907 +42 20 53.95 11.08 10.81 9.93 7.86   ~ 1567 2
10 UGC 2023 GiG 02 33 18.12 +33 29 25.5   14.9   13.59   ~ 79 0
11 UGC 2034 GiG 02 33 42.92 +40 31 43.2   15.0   13.45   ~ 65 0
12 UGC 2053 G 02 34 29.31 +29 44 59.4   15.7       ~ 52 0
13 UGC 2259 GiP 02 47 55.4157051190 +37 32 18.543987900   14.3   12.8   ~ 120 0
14 NGC 1156 rG 02 59 42.8526900556 +25 14 28.350265697 12.13 12.32 11.74     ~ 286 1
15 NGC 1324 LIN 03 25 01.686 -05 44 44.85   14   12.31   ~ 54 0
16 UGC 2849 GiG 03 45 32.9201263368 +44 51 17.425918023   17       ~ 22 0
17 UGC 2885 G 03 53 02.4582817635 +35 35 22.169573263   14.4       ~ 135 0
18 NGC 1560 GiG 04 32 49.087 +71 52 59.20   12.1       ~ 241 0
19 UGC 3137 G 04 46 16.976 +76 25 08.04   15.5       ~ 68 0
20 UGC 3371 G 05 56 35.98 +75 19 01.9   17       ~ 85 0
21 UGC 3698 G 07 09 18.75 +44 22 48.2   17       ~ 34 0
22 NGC 2337 G 07 10 13.6369267282 +44 27 26.738269783   13.1       ~ 74 0
23 UGC 3817 G 07 22 44.48 +45 06 30.7   17       ~ 41 0
24 NGC 2366 H2G 07 28 51.85 +69 12 31.1 12.25 11.86 11.39 11.33   ~ 717 0
25 NGC 2403 AGN 07 36 51.396 +65 36 09.17 9.31 8.84 8.38 8.19   ~ 1654 1
26 UGC 3966 G 07 41 25.777 +40 06 46.05   16.0       ~ 106 0
27 UGC 4173 G 08 07 10.05 +80 07 36.5   15.7       ~ 50 0
28 NGC 2537 IG 08 13 14.643 +45 59 23.25 12.18 12.50 11.69 11.66   ~ 278 1
29 IC 2233 LSB 08 13 58.909 +45 44 31.74 12.87 13.41 12.63 12.80   ~ 209 1
30 UGC 4305 IG 08 19 04.9878269182 +70 43 13.025604473 12.06 11.72 11.39 11.11   ~ 715 2
31 NGC 2552 G 08 19 20.5356353357 +50 00 34.586263623 13.44 13.00 12.56     ~ 236 1
32 UGC 4499 GiP 08 37 41.489 +51 39 08.58   13.50       ~ 123 1
33 UGC 4543 G 08 43 21.8472265854 +45 44 09.598165993   15.1       ~ 55 0
34 NGC 2841 LIN 09 22 02.655 +50 58 35.32 10.43 10.09 9.22     ~ 1013 1
35 NGC 2905 H2G 09 32 10.111 +21 30 02.99 10.44 9.75 9.07 8.68   ~ 1027 3
36 NGC 2955 GiG 09 41 16.6180880582 +35 52 56.167749421   13.90       ~ 93 0
37 NGC 2998 LIN 09 48 43.633 +44 04 53.15   13.3       ~ 194 0
38 UGC 5272 G 09 50 22.769 +31 29 17.80   14.48   14.10   ~ 171 0
39 NGC 3109 G 10 03 06.877 -26 09 34.46 11.10 10.42 10.04 9.91   ~ 711 2
40 NGC 3104 IG 10 03 57.185 +40 45 41.43   14.2       ~ 109 0
41 NGC 3198 EmG 10 19 54.990 +45 32 58.88 10.83 10.87 10.33     ~ 839 1
42 NGC 3274 EmG 10 32 17.2228402368 +27 40 07.160374345   13.30   12.77   ~ 205 0
43 NAME Spider G 10 42 42.787 +34 26 57.39   13.31 13.09 12.84 12.85 ~ 131 0
44 UGC 5846 G 10 44 28.536 +60 22 01.39   15.4       ~ 48 0
45 UGC 5918 GiG 10 49 36.412 +65 32 01.07 15.55 15.27 14.79 14.55   ~ 135 0
46 NGC 3396 GiP 10 49 55.939 +32 59 26.44   12.6 12.50     ~ 199 1
47 NGC 3432 IG 10 52 31.132 +36 37 07.60   11.81 11.67 11.29   ~ 261 1
48 NAME UMa Region reg 11 00 +50.0           ~ 318 0
49 UGC 6399 G 11 23 23.2220055506 +50 53 33.592165266   14.9       ~ 92 0
50 UGC 6446 GiC 11 26 40.4634006889 +53 44 47.988050815   14.5       ~ 138 0
51 NGC 3726 GiG 11 33 21.1357515876 +47 01 45.260627622   11.11   10.02   ~ 331 0
52 UGC 6628 G 11 40 05.7475480448 +45 56 31.741760477   14.6       ~ 70 0
53 NGC 3877 GiG 11 46 07.782 +47 29 40.20   11.8       ~ 288 0
54 NGC 3917 GiP 11 50 45.487 +51 49 27.16   12.5       ~ 168 0
55 UGC 6817 G 11 50 52.984 +38 52 50.92   13.72 13.9 13.39   ~ 155 0
56 NGC 3949 GiG 11 53 41.7329679734 +47 51 31.426105104   10.9       ~ 310 1
57 NGC 3953 GiG 11 53 49.0087614111 +52 19 36.473777126   11.08   9.71   ~ 324 0
58 NGC 3972 GiP 11 55 45.09048 +55 19 14.6460   13.14   11.94   ~ 186 1
59 UGC 6917 GiG 11 56 28.773 +50 25 42.22   14.0       ~ 122 0
60 NGC 3985 GiG 11 56 42.1292111140 +48 20 03.125688318   13.0       ~ 103 0
61 UGC 6923 GiC 11 56 49.526 +53 09 37.21   13.90   12.96   ~ 131 0
62 M 109 GiG 11 57 35.984 +53 22 28.27   10.94   9.57   ~ 427 0
63 NGC 3995 rG 11 57 44.098 +32 17 38.64   12.81       ~ 156 0
64 UGC 6956 G 11 58 25.96 +50 55 03.4   17       ~ 58 0
65 UGC 6983 GiC 11 59 08.734 +52 42 28.03   14.5       ~ 156 0
66 NGC 4068 G 12 04 03.265 +52 35 26.05   13.29   12.77   ~ 154 0
67 UGC 7089 GiP 12 05 57.746 +43 08 36.08   14.40       ~ 96 1
68 NGC 4100 GiG 12 06 08.602 +49 34 56.32   11.7       ~ 223 0
69 UGC 7125 G 12 08 41.514 +36 48 08.27   14.7       ~ 69 0
70 NGC 4138 Sy1 12 09 29.788 +43 41 07.14 12.46 12.29 11.32 10.82   ~ 369 1
71 NGC 4144 GiG 12 09 58.601 +46 27 25.85   12.17   11.50   ~ 210 0
72 NGC 4163 LSB 12 12 09.108 +36 10 03.13 14.33 13.70 13.2 12.98   ~ 194 0
73 NGC 4190 LSB 12 13 44.1699744302 +36 37 53.391666031 13.88 13.40 13.25 12.86   ~ 189 0
74 NGC 4204 GiC 12 15 14.359 +20 39 32.68   14.3       ~ 121 0
75 NGC 4228 SBG 12 15 39.174 +36 19 36.80 10.63 10.30 9.93 9.74   ~ 888 1
76 NGC 4218 GiP 12 15 46.1786868267 +48 07 52.630641133   13.2       ~ 84 0
77 NGC 4242 GiG 12 17 30.1848324010 +45 37 09.511603113   11.37 10.83     ~ 234 1
78 NGC 4288 GiG 12 20 38.119 +46 17 27.67   13.6       ~ 155 0
79 UGC 7408 GiG 12 21 15.27 +45 48 42.1   14.8       ~ 99 2
80 UGC 7490 G 12 24 24.83 +70 20 02.9 13.93 13.38 12.86 12.60   ~ 60 0
81 NGC 4395 Sy2 12 25 48.8639154223 +33 32 48.694684028 10.84 10.54 10.11 9.98   ~ 1036 1
82 UGC 7559 GiP 12 27 05.566 +37 08 30.39   14.19   13.55   ~ 181 0
83 UGC 7577 GiG 12 27 41.8803124881 +43 29 58.140216428 13.75 13.10 12.7 12.33   ~ 234 0
84 NGC 4449 EmG 12 28 11.118 +44 05 36.81 10.11 9.98 9.64 9.45   ~ 1042 1
85 UGC 7608 EmG 12 28 44.078 +43 13 25.79   16.0       ~ 81 0
86 NGC 4455 EmG 12 28 44.1266093618 +22 49 13.542101138   15.5       ~ 181 0
87 UGC 7690 LSB 12 32 26.893 +42 42 14.84   13.7       ~ 98 0
88 IC 3687 GiG 12 42 15.1536392607 +38 30 05.849182746   15.5       ~ 126 0
89 UGC 7916 GiC 12 44 24.881 +34 23 03.33   15.0       ~ 61 0
90 NGC 4707 G 12 48 21.666 +51 09 53.81   15.2       ~ 93 0
91 UGC 8024 GiC 12 54 05.248 +27 08 58.67 14.37 14.23 13.95 13.84   ~ 551 1
92 IC 4182 BiC 13 05 48.7470958923 +37 36 13.015792630   11.86   11.40   ~ 322 1
93 UGC 8201 G 13 06 24.85 +67 42 25.0 14.08 13.61 13.08 12.98   ~ 229 1
94 NGC 5023 EmG 13 12 11.799 +44 02 16.88   13.2       ~ 228 0
95 NGC 5033 Sy1 13 13 27.535 +36 35 37.14   11.01 12.03 9.73   ~ 814 3
96 UGC 8320 G 13 14 27.997 +45 55 11.14 13.63 13.26 13.02 12.81   ~ 247 0
97 UGC 8331 G 13 15 29.753 +47 29 58.69   15.6       ~ 93 1
98 UGC 8333 GiC 13 15 53.778 +25 26 10.13   17       ~ 107 0
99 NGC 5204 LSB 13 29 36.508 +58 25 07.43   11.84   11.37   ~ 430 0
100 NGC 5229 LSB 13 34 02.831 +47 54 55.68   14.6       ~ 115 0
101 UGC 8683 G 13 42 32.520 +39 39 30.60   15.7       ~ 33 0
102 UGC 8837 G 13 54 45.602 +53 54 20.06   14.2       ~ 187 0
103 UGC 9128 G 14 15 56.70 +23 03 16.2 15.40 14.77 14.41 14.32   ~ 260 0
104 NGC 5533 G 14 16 07.7447534360 +35 20 37.779634124   13.0       ~ 155 1
105 NGC 5585 GiG 14 19 48.204 +56 43 44.58   11.73 11.216 11.12 10.123 ~ 389 0
106 UGC 9211 G 14 22 32.1695540157 +45 23 01.929995337   15.7       ~ 73 0
107 UGC 9992 G 15 41 48.01 +67 15 14.0 15.71 15.22 14.81 14.44   ~ 71 0
108 UGC 10310 IG 16 16 17.9040378078 +47 02 43.158504118   14.9       ~ 129 0
109 NGC 6195 LIN 16 36 32.5655877037 +39 01 40.409449250   14.7       ~ 83 0
110 NGC 6503 LIN 17 49 26.4206717056 +70 08 39.587370580 11.56 10.95 10.28 9.92   ~ 482 1
111 NGC 6674 G 18 38 33.889 +25 22 30.39   13.7       ~ 99 0
112 UGC 11557 G 20 24 00.6832138248 +60 11 41.410920518   14.5       ~ 63 0
113 UGC 11707 G 21 14 31.75 +26 44 04.5   15.6       ~ 58 0
114 UGC 11861 G 21 56 24.148 +73 15 39.33   15.2       ~ 90 0
115 UGC 12060 GiG 22 30 33.7 +33 49 15   15.5       ~ 65 0
116 NGC 7331 LIN 22 37 04.102 +34 24 57.31 10.65 10.35 9.48     ~ 1145 2
117 UGC 12632 GiG 23 29 58.78 +40 59 25.2   15.7       ~ 90 0
118 UGC 12732 GiP 23 40 39.96 +26 14 09.8   14.5       ~ 123 0

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2021.09.26-02:32:25

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