2003A&A...398..467K

Query : 2003A&A...398..467K

2003A&A...398..467K - Astronomy and Astrophysics, volume 398467-477 (2003/2-1)

Galaxy flow in the Canes Venatici I cloud.

KARACHENTSEV I.D., SHARINA M.E., DOLPHIN A.E., GREBEL E.K., GEISLER D., GUHATHAKURTA P., HODGE P.W., KARACHENTSEVA V.E., SARAJEDINI A. and SEITZER P.

Abstract (from CDS):

We present an analysis of Hubble Space Telescope/WFPC2 images of eighteen galaxies in the Canes Venatici I cloud. We derive their distances from the luminosity of the tip of the red giant branch stars with a typical accuracy of ∼12%. The resulting distances are 3.9Mpc (UGC 6541), 4.9Mpc (NGC 3738), 3.0Mpc (NGC 3741), 4.5Mpc (KK 109), >6.3Mpc (NGC 4150), 4.2Mpc (UGC 7298), 4.5Mpc (NGC 4244), 4.6Mpc (NGC 4395), 4.9Mpc (UGC 7559), 4.2Mpc (NGC 4449), 4.4Mpc (UGC 7605), 4.6Mpc (IC 3687), 4.7Mpc (KK 166), 4.7Mpc (NGC 4736), 4.2Mpc (UGC 8308), 4.3Mpc (UGC 8320), 4.6Mpc (NGC 5204), and 3.2Mpc (UGC 8833). The CVnI cloud has a mean radial velocity of 286±9km/s, a mean distance of 4.1±0.2Mpc, a radial velocity dispersion of 50km/s, a mean projected radius of 760 kpc, and a total blue luminosity of 2.2x1010L☉. Assuming virial or closed orbital motions for the galaxies, we estimated their virial and their orbital mass-to-luminosity ratio to be 176 and 88M☉/L☉, respectively. However, the CVn I cloud is characterized by a crossing time of 15Gyr, and is thus far from a state of dynamical equilibrium. The large crossing time for the cloud, its low content of dSph galaxies (<6%), and the almost ``primordial'' shape of its luminosity function show that the CVn I complex is in a transient dynamical state, driven rather by the free Hubble expansion than by galaxy interactions.

Abstract Copyright: ∼

Journal keyword(s): galaxies: dwarf - galaxies: distances and redshifts - galaxies: kinematics and dynamics - galaxies: clusters: individual: Canes Venatici cloud

Simbad objects: 78

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Number of rows : 78
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 Scl Group GrG 01 00 06 -33 44.2           ~ 526 0
2 NAME Pisces I G 01 03 55.0 +21 53 06   16.18 14.3     ~ 404 0
3 NAME M 81-82 Group GrG 09 55 +69.1           ~ 758 0
4 NAME Antlia Dwarf Galaxy G 10 04 03.9 -27 20 01 16.73 15.69 15.17 15.00   ~ 221 1
5 Z 242-46 bCG 11 33 29.12 +49 14 17.4 14.69 14.61 14.25 14.17   ~ 242 1
6 NGC 3738 AGN 11 35 48.982 +54 31 24.70   12.12 12.04 11.56   ~ 303 0
7 NGC 3741 AG? 11 36 05.754 +45 17 02.96 15.01 14.55 14.23 14.06   ~ 237 0
8 LEDA 166115 G 11 47 11.965 +43 40 18.79   17.5       ~ 44 1
9 Z 214-32 AG? 11 50 52.98254 +38 52 50.6594   13.72 13.9 13.39   ~ 175 0
10 NGC 4068 AG? 12 04 03.265 +52 35 26.05   13.29   12.77   ~ 189 0
11 NGC 4080 GiG 12 04 51.804 +26 59 33.43   14.0       ~ 107 0
12 IC 2992 bCG 12 05 15.842 +30 51 19.49   14.8       ~ 43 0
13 Z 158-15 EmG 12 05 23.3481257808 +28 21 57.114733032   15.2       ~ 27 0
14 Z 158-32 AG? 12 09 11.797 +30 54 24.54   15.7       ~ 32 0
15 Z 187-15 LSB 12 09 56.466 +36 26 03.34   15.5       ~ 44 0
16 NGC 4144 GiG 12 09 58.601 +46 27 25.85   12.17   11.50   ~ 260 0
17 NGC 4150 GiG 12 10 33.655 +30 24 05.35 12.72 12.44 11.64     ~ 331 2
18 NGC 4163 LSB 12 12 09.34 +36 10 08.1 14.33 13.70 13.2 12.98   ~ 238 0
19 Z 158-48 AG? 12 13 23.2223740680 +29 55 19.212036384   15.7       ~ 32 0
20 NGC 4190 LSB 12 13 44.765 +36 38 02.49 13.88 13.40 13.25 12.86   ~ 224 0
21 Z 269-49 AG? 12 15 46.626 +52 23 13.91   15.3       ~ 75 0
22 MCG+09-20-137 LSB 12 16 30.415 +52 13 45.40   17       ~ 81 1
23 NGC 4244 GiG 12 17 29.659 +37 48 25.60   10.71   9.99   ~ 582 1
24 NGC 4248 GiG 12 17 49.8429850848 +47 24 33.085192824   13.12 12.53     ~ 129 1
25 M 106 Sy2 12 18 57.620 +47 18 13.39   9.14 8.41 8.11   ~ 2512 4
26 NGC 4338 GiC 12 23 13.938 +28 53 38.79   15.6       ~ 70 0
27 IC 3308 LSB 12 25 18.03576 +26 42 51.6168   15.4       ~ 49 0
28 LEDA 166137 GiC 12 25 28.5 +28 28 56   16.5       ~ 46 1
29 NGC 4395 Sy2 12 25 48.8633109888 +33 32 48.700168152 10.84 10.54 10.11 9.98   ~ 1286 1
30 Z 244-18 bCG 12 26 15.69 +48 29 38.3   15.3       ~ 364 0
31 Z 187-44 GiP 12 27 05.566 +37 08 30.39   14.19   13.55   ~ 217 0
32 Z 216-4 GiG 12 27 40.90 +43 29 44.0 13.75 13.10 12.7 12.33   ~ 270 0
33 NGC 4449 EmG 12 28 11.118 +44 05 36.81 10.11 9.98 9.64 9.45   ~ 1192 1
34 Z 187-46 GiP 12 28 28.084 +37 14 05.36   15.6       ~ 105 0
35 Z 187-47 GiG 12 28 38.743 +35 43 02.91 15.50 15.12 14.86 14.78   ~ 130 1
36 NGC 4460 H2G 12 28 45.557 +44 51 51.25   12.5       ~ 147 0
37 MCG+07-26-011 AG? 12 28 52.298 +42 10 40.09   15       ~ 43 0
38 Z 244-24 GiG 12 29 53.40 +47 31 52.0   14.32   13.44   ~ 84 0
39 MCG+07-26-012 AG? 12 30 23.574 +42 54 05.76   15       ~ 40 0
40 NGC 4485 GiP 12 30 31.113 +41 42 04.22 12.10 12.42 11.93 11.93   ~ 305 2
41 Z 188-7 LSB 12 32 48.003 +37 37 18.49   13.40       ~ 124 0
42 NAME CVn I Group GrG 12 32 48.3 +33 57 07           ~ 149 0
43 Z 159-13 GiC 12 32 54.5 +31 32 30   13.50   13.03   ~ 180 0
44 UGCA 290 IG 12 37 21.7 +38 44 28   17       ~ 75 1
45 NAME CVn I dwA GiC 12 38 40.06 +32 46 00.5 16.91 16.66 16.73 16.62   ~ 242 0
46 IC 3687 GiG 12 42 15.1540831512 +38 30 05.844632940   15.5       ~ 153 0
47 LEDA 166142 G 12 43 57.791 +43 39 40.36   17       ~ 32 0
48 MCG+06-28-030 GiC 12 47 00.610 +36 28 37.09   17       ~ 86 0
49 LEDA 91228 GiC 12 47 00.647 +32 39 05.75   17.29       ~ 43 0
50 LEDA 166146 G 12 49 13.3 +35 36 43           ~ 24 1
51 UGC 7990 GiC 12 50 25.973 +28 21 08.82   17       ~ 35 0
52 M 94 SyG 12 50 53.0737971432 +41 07 12.900884628 9.15 8.96 8.24 7.78   ~ 1476 2
53 NGC 4789A GiC 12 54 05.248 +27 08 58.67 14.37 14.23 13.95 13.84   ~ 614 1
54 IC 4182 BiC 13 05 48.7478324064 +37 36 12.965157684   11.86   11.40   ~ 344 1
55 MCG+08-24-048 AG? 13 08 03.552 +46 49 40.02   17       ~ 79 0
56 NGC 5023 EmG 13 12 11.8036148808 +44 02 17.328663600   13.2       ~ 265 0
57 MCG+08-24-090 AG? 13 13 22.839 +46 19 21.71   17       ~ 135 1
58 LEDA 166159 LSB 13 13 39.9 +42 02 35   18.51   17.22   ~ 21 0
59 Z 245-36 AG? 13 14 27.997 +45 55 11.14 13.63 13.26 13.02 12.81   ~ 297 0
60 Z 245-38 AG? 13 15 29.753 +47 29 58.69   15.6       ~ 114 1
61 NAME Cen A Group GrG 13 20 33.9 -44 58 51           ~ 274 0
62 NGC 5204 LSB 13 29 36.508 +58 25 07.43   11.84   11.37   ~ 494 0
63 M 51 Sy2 13 29 52.698 +47 11 42.93   9.26 8.36 8.40   ~ 4565 4
64 NGC 5195 GiG 13 29 59.590 +47 15 58.06 10.76 10.45 9.55 9.31   ~ 816 3
65 Z 271-48 EmG 13 30 44.8682655624 +54 54 38.522749824 14.72 14.25 13.90 13.75   ~ 218 0
66 NGC 5229 LSB 13 34 02.831 +47 54 55.68   14.6       ~ 149 0
67 NGC 5238 GiP 13 34 42.5146948080 +51 36 49.168365696   14.2       ~ 143 0
68 Z 131-18 EmG 13 39 19.348 +24 46 27.77 15.21 14.84 14.46 14.29   ~ 94 0
69 Z 218-34 AG? 13 39 53.75 +40 44 25.3 15.37 14.56 14.20 14.10   ~ 165 0
70 MCG+06-31-023 AG? 13 54 48.8114 +35 50 07.775   16.5   15.20   ~ 123 1
71 LEDA 166185 G 14 07 10.1 +35 03 37   16.9 17.2     ~ 94 0
72 Z 133-19 AG? 14 15 57.0834 +23 03 29.871 15.40 14.77 14.41 14.32   ~ 296 0
73 Z 247-26 AG? 14 24 43.21 +44 31 41.8 14.24 13.54 13.17 13.07   ~ 217 0
74 NGC 7356 GiG 22 42 02.3535042408 +30 42 31.302961488   15.0       ~ 36 0
75 NGC 7369 GiG 22 44 12.305 +34 21 04.15   14.8       ~ 33 0
76 NGC 7408 Sy2 22 55 56.8300856753 -63 41 40.813463246   13.35 15.41 12.32 13.0 ~ 49 0
77 NAME Local Group GrG ~ ~           ~ 9325 0
78 NAME Com-Scl Cloud Cld ~ ~           ~ 10 0

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