2002A&A...388...29P


Query : 2002A&A...388...29P

2002A&A...388...29P - Astronomy and Astrophysics, volume 388, 29-49 (2002/6-2)

Structure and stellar content of dwarf galaxies. VII. B and R photometry of 25 southern field dwarfs and a disk parameter analysis of the complete sample of nearby irregulars.

PARODI B.R., BARAZZA F.D. and BINGGELI B.

Abstract (from CDS):

We present B and R band surface photometry of 25 Southern field dwarf galaxies within a distance of 10Mpc. For each galaxy we give the essential model-free photometric parameters and, by fitting exponentials to the surface brightness profiles, the central extrapolated surface brightness and the exponential scale length, in both colour bands. Surface brightness and colour profiles are shown. One of the objects, a very faint dwarf elliptical in the vicinity of NGC 2784, has been discovered in the course of this work. Drawing on the data from this and all previous papers of this series, we construct a complete sample of 72 late-type (``irregular'') dwarf galaxies in nearby groups and the field within the 10Mpc volume, to study the exponential-disk parameter relations of these galaxies with respect to galaxy environment. We confirm our previous finding of statistically lower scale lengths/higher central surface brightnesses for field and group galaxies as compared to cluster galaxies. However, using a clear-cut definition of ``group'' versus ``field'' environment, we find no significant difference in the photometric structure of group and field irregulars. A difference in the star formation history may partly account for this structure-environment relation: for a given luminosity cluster dwarfs are on average redder than field and group galaxies. We also report evidence for the colour gradients of dwarf irregulars being roughly inversely proportional to the disk scale lengths. Supplementing our photometric data with kinematic data from the literature, we study possible relations with kinematic properties of the inner disk. Applying the dark matter scaling relations for a Burkert halo we show that for field and group galaxies of a given luminosity faster-than-mean disk rotational velocities at a radius of about two scale lengths are correlated with larger-than-mean disk scale lengths.

Abstract Copyright:

Journal keyword(s): galaxies: general - galaxies: fundamental parameters - galaxies: irregular - galaxies: photometry - galaxies: structure - galaxies: kinematics and dynamics

VizieR on-line data: <Available at CDS (J/A+A/388/29): table3.dat (with positions)>

Simbad objects: 88

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Number of rows : 88
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2023
#notes
1 ESO 410-5 LSB 00 15 31.45 -32 10 47.3   15.32 14.9 14.58   ~ 99 1
2 UGC 288 G 00 29 04.58 +43 25 48.7   16.0       ~ 37 0
3 ESO 473-24 G 00 31 23.1 -22 46 02   16.11   15.87 17.7 ~ 55 1
4 UGC 685 G 01 07 22.55 +16 41 03.1 15.01 14.55 14.07     ~ 128 0
5 UGC 1281 LSB 01 49 31.71 +32 35 16.2   13.0       ~ 156 0
6 ESO 115-21 G 02 37 49.563 -61 19 53.77 14.14 13.52 13.13 12.95   ~ 82 1
7 ESO 154-23 G 02 56 50.4 -54 34 17   12.63   12.18 12.5 ~ 104 0
8 NGC 1156 rG 02 59 42.8528847264 +25 14 28.352017320 12.13 12.32 11.74     ~ 297 1
9 NGC 1179 LSB 03 02 38.42 -18 53 51.4   12.61   11.83 12.2 ~ 94 0
10 NGC 1311 G 03 20 06.946 -52 11 07.76 13.89 13.35 12.93 12.75 13.1 ~ 114 0
11 UGC 2684 G 03 20 23.71 +17 17 45.1   18       ~ 73 0
12 UGC 2716 LSB 03 24 07.257 +17 45 10.94 15.09 14.58 14.11 13.88   ~ 51 0
13 IC 1959 GiG 03 33 12.576 -50 24 51.13 13.52 13.32 12.96 12.75 12.7 ~ 94 0
14 UGC 2905 GiP 03 57 00.1065277344 +16 31 21.442194444   15.7       ~ 38 0
15 IC 2038 GiP 04 08 53.7569973144 -55 59 21.778144080   14.82   13.80   ~ 38 0
16 IC 2039 GiP 04 09 02.3235506064 -56 00 41.646005964   14.97   13.91   ~ 28 0
17 NGC 1800 G 05 06 25.737 -31 57 15.21 13.51 13.19 12.70 12.48 12.9 ~ 170 1
18 6dFGS gJ052323.7-343430 EmG 05 23 23.7 -34 34 27   17.20   15.67   ~ 16 0
19 UGC 3303 GiC 05 24 59.13 +04 30 19.6   16.0       ~ 35 0
20 NAME Ori Dwarf Galaxy GiC 05 45 01.6 +05 03 41   18.0       ~ 44 0
21 Anon 0554+07 G 05 57 33.6 +07 28 57   18.4       ~ 21 0
22 ESO 555-28 G 06 04 27.9 -19 37 20   17.15   16.49 15.1 ~ 13 0
23 ESO 489-56 G 06 26 17.8 -26 15 58   16.69   16.28 15.0 ~ 54 0
24 UGC 3476 G 06 30 28.37 +33 18 03.7   15.7       ~ 34 0
25 ESO 490-17 G 06 37 56.6 -25 59 58   13.71   12.80 12.9 ~ 48 1
26 ESO 308-22 G 06 39 33.1 -40 43 18   16.23   15.88 16.9 ~ 31 0
27 UGC 3600 LSB 06 55 39.81787 +39 05 43.7871   18       ~ 37 0
28 NAME Argo Dwarf Irregular G 07 05 17.4 -58 31 13   14.2       ~ 47 0
29 PN K 2-3 PN 07 06 56.8 -22 02 26   15.8       ~ 48 0
30 NGC 2337 G 07 10 13.6374445464 +44 27 26.716619844   13.1       ~ 78 0
31 ESO 59-1 G 07 31 18.2 -68 11 16   13.74   12.80 13.7 ~ 65 1
32 UGC 4115 G 07 57 01.027 +14 23 47.66   16.0       ~ 142 0
33 NGC 2537 IG 08 13 14.643 +45 59 23.25 12.18 12.50 11.69 11.66   ~ 286 1
34 ESO 6-1 G 08 19 22.1394597504 -85 08 35.693588832   15.16   13.94   ~ 19 0
35 UGC 4459 GiG 08 34 07.29 +66 10 54.6 15.39 15.03 14.70 14.49   ~ 317 2
36 UGC 4483 GiG 08 37 03.29 +69 46 29.2 15.70 15.46 14.98 14.89   ~ 285 0
37 ESO 497-17 G 09 09 46.5 -23 00 33   15.64 14.44 14.74 13.76 ~ 36 0
38 NAME NGC 2784 DW1 G 09 12 17.0 -24 12 47   17.2 16.21   15.38 ~ 9 0
39 NGC 2784 G 09 12 19.497 -24 10 21.36 12.02 10.99 10.16 9.30   ~ 129 1
40 LEDA 166099 G 09 12 29.3 -24 14 28   16.35 15.27   14.45 ~ 17 1
41 ESO 564-30 G 09 13 12.1 -19 24 31   14.91   14.13 15.0 ~ 30 0
42 UGC 4945 G 09 22 26.63 +75 45 58.8   17       ~ 21 0
43 UGC 4998 G 09 25 10.9152585432 +68 22 59.167851456 15.94 15.13 14.42 14.09   ~ 41 0
44 NGC 2915 G 09 26 11.532 -76 37 34.75 13.13 12.93 12.68 11.90 12.8 ~ 327 2
45 UGC 5139 LSB 09 40 32.33 +71 10 56.0 14.53 14.00 13.66 13.41   ~ 346 1
46 LEDA 27949 G 09 45 15.3 +69 23 21   16.9       ~ 19 0
47 NGC 2976 GiP 09 47 15.458 +67 54 58.97 11.77 11.03 10.16 9.51   ~ 636 1
48 UGC 5272 G 09 50 22.769 +31 29 17.80   14.48   14.10   ~ 180 0
49 NAME M 81-82 Group GrG 09 55 +69.1           ~ 684 0
50 M 81 Sy2 09 55 33.1726556496 +69 03 55.062505368   7.89 6.94     ~ 4237 3
51 UGCA 193 GiG 10 02 35.9 -06 00 49 15.70 15.16 14.74 14.55 14.3 ~ 69 0
52 NAME M81 dwB LSB 10 05 30.45024 +70 21 51.4253 15.95 15.56 15.09 14.87   ~ 193 1
53 UGCA 200 G 10 05 35.1 -07 45 00   17       ~ 30 1
54 NAME NGC 3115 DW1 GiG 10 05 41.5916660712 -07 58 53.587291224   14.32 13.45     ~ 83 1
55 UGC 5658 G 10 27 45.16 +71 14 13.9   17       ~ 13 0
56 UGC 5692 GiG 10 30 36.58 +70 37 06.0 14.81 13.69 13.01 12.73   ~ 122 0
57 UGC 5918 GiG 10 49 36.412 +65 32 01.07 15.55 15.27 14.79 14.55   ~ 144 0
58 LEDA 32667 LSB 10 52 55.1 +69 32 46   17.2       ~ 81 1
59 Mrk 178 bCG 11 33 29.12 +49 14 17.4 14.69 14.61 14.25 14.17   ~ 223 1
60 NGC 3738 AGN 11 35 48.982 +54 31 24.70   12.12 12.04 11.56   ~ 271 0
61 NGC 3741 G 11 36 05.754 +45 17 02.96 15.01 14.55 14.23 14.06   ~ 205 0
62 UGC 6782 GiC 11 48 57.4095791424 +23 50 14.907030000   15.29   14.63   ~ 68 0
63 UGC 6817 G 11 50 52.984 +38 52 50.92   13.72 13.9 13.39   ~ 159 0
64 NGC 4068 G 12 04 03.265 +52 35 26.05   13.29   12.77   ~ 166 0
65 NGC 4163 LSB 12 12 09.1135538928 +36 10 02.750195388 14.33 13.70 13.2 12.98   ~ 207 0
66 UGC 7298 LSB 12 16 30.415 +52 13 45.40   17       ~ 72 1
67 NGC 4248 GiG 12 17 49.8429850848 +47 24 33.085192824   13.12 12.53     ~ 110 1
68 UGC 7599 GiP 12 28 28.084 +37 14 05.36   15.6       ~ 93 0
69 SDSS J122953.35+473150.2 GiG 12 29 53.35 +47 31 52.1   14.32   13.44   ~ 74 0
70 NAME CVn I Group GrG 12 32 48.3 +33 57 07           ~ 139 0
71 UGC 8215 G 13 08 03.552 +46 49 40.02   17       ~ 74 0
72 UGC 8308 G 13 13 22.839 +46 19 21.71   17       ~ 125 1
73 UGC 8320 G 13 14 27.997 +45 55 11.14 13.63 13.26 13.02 12.81   ~ 261 0
74 UGC 8331 G 13 15 29.753 +47 29 58.69   15.6       ~ 100 1
75 UGC 8508 G 13 30 44.8682655624 +54 54 38.522749824 14.72 14.25 13.90 13.75   ~ 177 0
76 NGC 5229 LSB 13 34 02.831 +47 54 55.68   14.6       ~ 124 0
77 NGC 5238 GiP 13 34 42.5146948080 +51 36 49.168365696   14.2       ~ 125 0
78 UGC 8651 G 13 39 53.75 +40 44 25.3 15.37 14.56 14.20 14.10   ~ 145 0
79 UGC 8760 G 13 50 51.3127548768 +38 01 14.958828876 15.56 14.78   14.33   ~ 139 0
80 UGC 8837 G 13 54 45.602 +53 54 20.06   14.2       ~ 193 0
81 UGC 8833 G 13 54 48.52 +35 50 14.5   16.5   15.20   ~ 106 1
82 UGC 8914 G 13 59 10.802 +52 21 42.50   17       ~ 12 0
83 NAME M101 Group GrG 14 03 +54.3           ~ 96 1
84 M 101 GiP 14 03 12.583 +54 20 55.50   8.46 7.86 7.76   ~ 2751 2
85 NGC 5474 GiP 14 05 01.608 +53 39 43.95   11.28 10.79     ~ 419 1
86 NGC 5477 G 14 05 33.318 +54 27 37.85 13.94 14.36 14.01     ~ 197 1
87 UGC 9240 G 14 24 43.0755746952 +44 31 31.759938264 14.24 13.54 13.17 13.07   ~ 191 0
88 UGC 9405 G 14 35 24.077 +57 15 21.24   17       ~ 80 0

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2022.11.28-10:04:13

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