CDS

2001A&A...376...98S

Query : 2001A&A...376...98S

2001A&A...376...98S - Astronomy and Astrophysics, volume 376, 98-111 (2001/9-2)

The neutral hydrogen content of Fornax cluster galaxies.

SCHROEDER A., DRINKWATER M.J. and RICHTER O.-G.

Abstract (from CDS):

We present a new set of deep HI observations of member galaxies of the Fornax cluster. We detected 35 cluster galaxies in HI. The resulting sample, the most comprehensive to date, is used to investigate the distribution of neutral hydrogen in the cluster galaxies. We compare the HI content of the detected cluster galaxies with that of field galaxies by measuring HI mass-to-light ratios and the HI deficiency parameter of Solanes et al. (1996ApJ...461..609S The mean HI mass-to-light ratio of the cluster galaxies is 0.68±0.15, significantly lower than for a sample of HI-selected field galaxies (1.15±0.10), although not as low as in the Virgo cluster (0.45±0.03). In addition, the HI content of two cluster galaxies (NGC 1316C and NGC 1326B) appears to have been affected by interactions. The mean HI deficiency for the cluster is 0.38±0.09 (for galaxy types T=1-6), significantly greater than for the field sample (0.05±0.03). Both these tests show that Fornax cluster galaxies are HI-deficient compared to field galaxies. The kinematics of the cluster galaxies suggests that the HI deficiency may be caused by ram-pressure stripping of galaxies on orbits that pass close to the cluster core. We also derive the most complete B-band Tully-Fisher relation of inclined spiral galaxies in Fornax. A subcluster in the South-West of the main cluster contributes considerably to the scatter. The scatter for galaxies in the main cluster alone is 0.50mag, which is slightly larger than the intrinsic scatter of 0.4mag. We use the Tully-Fisher relation to derive a distance modulus of Fornax relative to the Virgo cluster of -0.38±0.14mag. The galaxies in the subcluster are (1.0±0.5)mag brighter than the galaxies of the main cluster, indicating that they are situated in the foreground. With their mean velocity 95km/s higher than that of the main cluster we conclude that the subcluster is falling into the main Fornax cluster.

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Journal keyword(s): galaxies: clusters: general - galaxies: clusters: individual: Fornax cluster - galaxies: fundamental parameters - galaxies: general - radio lines: galaxies

Simbad objects: 74

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Number of rows : 74
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 357-7 EmG 03 10 24.35 -33 09 22.2   14.66   13.92 14.3 ~ 50 0
2 ESO 357-10 GiC 03 15 42.48 -33 32 30.8   16.24   11.35   ~ 12 0
3 ESO 357-12 GiC 03 16 53.5 -35 32 29   13.78   12.68 13.2 ~ 67 0
4 2MASX J03175316-3303302 G 03 17 53.1542361432 -33 03 29.924420868   15.51       ~ 9 0
5 2dFGRS TGS471Z004 LSB 03 19 24.97 -32 38 58.0   15.98   15.688 16.1 ~ 15 0
6 IC 1913 GiC 03 19 34.578 -32 27 54.41   14.38   13.54 14.2 ~ 71 0
7 ESO 357-17 G 03 20 54.86 -33 42 57.5   15.65   14.891   ~ 8 0
8 NGC 1310 EmG 03 21 03.4175652072 -37 06 06.062937516 12.43 12.98 12.08 12.03   ~ 97 1
9 NGC 1316 GiP 03 22 41.789 -37 12 29.52 9.81 9.15 8.53 7.66   ~ 1355 1
10 NGC 1317 GiP 03 22 44.2823209512 -37 06 13.180903956 12.20 11.78 11.02 10.22   ~ 205 1
11 ESO 301-11 IG 03 23 54.4 -37 30 36   13.87   12.66   ~ 38 1
12 NGC 1326 GiG 03 23 56.3657298384 -36 27 52.322333040 11.69 11.43 10.54 10.02 10.9 ~ 260 1
13 ESO 357-27 GiP 03 24 58.4399334528 -37 00 34.541960832   14.36   13.23   ~ 55 0
14 6dFGS gJ032504.2-365540 GiP 03 25 04.2 -36 55 40   15.49       ~ 25 0
15 ESO 357-28 IG 03 25 08.2 -36 21 51   13.80   12.91 13.7 ~ 92 0
16 ESO 357-29 GiG 03 25 19.9 -36 23 06   13.08   13.2 12.9 ~ 46 0
17 NGC 1336 GiG 03 26 32.1845365512 -35 42 48.662672184   13.12   11.95   ~ 128 0
18 ESO 358-5 GiG 03 27 16.9 -33 29 10   14.69   13.69 14.3 ~ 40 0
19 NGC 1341 EmG 03 27 58.3983347688 -37 09 00.271891836   12.86   11.82   ~ 76 0
20 NGC 1339 GiG 03 28 06.5493649512 -32 17 09.840527844   12.63   11.18   ~ 160 0
21 NGC 1340 GiG 03 28 19.6251763296 -31 04 05.435465520   11.20 10.32 9.70   ~ 208 1
22 ESO 358-9 GiG 03 28 48.718 -35 10 41.37   14.21   12.92 13.3 ~ 90 0
23 ESO 358-10 GiG 03 29 43.2 -33 33 25   14.85   13.61   ~ 36 0
24 NGC 1351 GiG 03 30 34.9598617824 -34 51 14.242996620   12.30   10.85   ~ 174 0
25 NGC 1350 GiG 03 31 08.119 -33 37 43.10   11.20 10.52 9.77 10.6 ~ 178 0
26 2dFGRS TGS473Z052 GiC 03 31 19.3 -32 03 11   17.0   16.720   ~ 6 0
27 LEDA 74660 GiC 03 31 22.4 -37 36 49   19.2       ~ 4 0
28 6dFGS gJ033210.7-361314 LSB 03 32 10.6 -36 13 11   16.39       ~ 21 0
29 ESO 358-15 LSB 03 33 07.1 -34 48 20   15.34   14.29 14.9 ~ 72 0
30 ESO 358-16 GiC 03 33 09.2 -35 43 05   16.74   15.96   ~ 26 0
31 LEDA 13185 GiC 03 33 34.2 -36 36 20   16.43       ~ 19 0
32 NGC 1365 Sy1 03 33 36.458 -36 08 26.37 10.48 10.08 9.63 8.79 9.7 ~ 1745 2
33 LEDA 74727 LSB 03 33 43.3 -35 51 34   16.7       ~ 19 1
34 LEDA 74730 GiC 03 33 55.5 -34 20 48   20.4       ~ 10 0
35 ESO 358-20 GiG 03 34 57.3705020400 -32 38 22.385391972   14.58   13.54   ~ 41 0
36 NGC 1374 GiP 03 35 16.5885737352 -35 13 34.563417168 12.46 11.97 11.08 10.59   ~ 292 1
37 NGC 1375 GiG 03 35 16.8025873104 -35 15 56.371399740 13.50 13.02 12.40 11.74   ~ 160 1
38 IC 1963 GiG 03 35 31.0692175536 -34 26 49.368859656   12.90   11.71   ~ 131 0
39 ESO 358-25 GiG 03 35 33.134 -32 27 53.55   13.90       ~ 80 0
40 NGC 1379 GiP 03 36 03.9668625792 -35 26 28.547476800 12.17 12.04 10.91 10.60   ~ 259 1
41 NGC 1380 GiP 03 36 27.590 -34 58 34.68 11.32 10.94 9.93 9.37   ~ 417 1
42 NGC 1369 GiG 03 36 45.2559802872 -36 15 22.575550716   13.77   12.30   ~ 57 0
43 NGC 1386 GiP 03 36 46.238 -35 59 57.39 12.42 12.16 11.23 10.76   ~ 512 1
44 ESO 358-33 GiG 03 36 47.5007323848 -34 44 22.739259552 13.63 13.36 12.41 12.00   ~ 138 1
45 NGC 1387 GiP 03 36 57.0337458600 -35 30 23.675934060 12.18 11.75 10.69 10.16   ~ 254 1
46 NGC 1389 GiP 03 37 11.7427350576 -35 44 45.873195000 12.80 12.39 11.50 10.99   ~ 193 1
47 NGC 1399 BiC 03 38 29.083 -35 27 02.67 11.05 9.74 9.59 8.12   ~ 1557 1
48 ACO S 373 ClG 03 38 29.4 -35 27 08           ~ 1782 0
49 NGC 1404 GiP 03 38 51.917 -35 35 39.81 11.53 10.69 10.00 9.03   ~ 737 1
50 NGC 1406 EmG 03 39 23.3038688087 -31 19 17.505737604   12.42   11.24 11.9 ~ 115 0
51 LEDA 74840 GiC 03 39 32.7 -31 47 24   16.9       ~ 9 0
52 ESO 358-49 GiP 03 40 09.0 -35 37 34   13.44   12.68 13.3 ~ 104 1
53 ESO 419-1 GiC 03 40 27.9 -31 41 11   16.46   16.28   ~ 6 0
54 ESO 358-51 GiG 03 41 32.607 -34 53 18.01   13.95   13.02 13.8 ~ 86 0
55 6dFGS gJ034145.5-334729 GiC 03 41 45.4 -33 47 29   15.82       ~ 20 0
56 NGC 1425 EmG 03 42 11.4831633240 -29 53 36.186684252   11.61   11.6 10.9 ~ 198 0
57 NGC 1427 GiG 03 42 19.4455150392 -35 23 33.169251120   11.89   10.44   ~ 274 0
58 MCG-06-09-023 GiP 03 42 45.302 -33 55 14.03   14.53       ~ 35 0
59 ESO 358-54 GiG 03 43 02.4 -36 16 24   13.92   13.09   ~ 68 0
60 NGC 1436 GiG 03 43 37.0896438888 -35 51 11.004592644   12.49   11.16   ~ 123 0
61 LEDA 74972 GiC 03 44 58.6 -36 53 42   17.1       ~ 10 0
62 ESO 358-60 GiC 03 45 12.3 -35 34 15   15.86   15.46 16.6 ~ 70 0
63 6dFGS gJ034545.4-362046 GiC 03 45 45.4 -36 20 46   16.01   15.11   ~ 29 0
64 ESO 358-61 GiP 03 45 54.864 -36 21 24.93   13.98   12.78   ~ 80 0
65 ESO 358-63 EmG 03 46 19.007 -34 56 36.83   12.57   12.3 11.9 ~ 113 0
66 IC 1993 GiG 03 47 04.8369103704 -33 42 35.877997728   12.50   11.16 11.7 ~ 82 0
67 ESO 302-9 EmG 03 47 34.0 -38 34 37   14.34   13.87 14.5 ~ 53 0
68 ESO 359-3 GiC 03 52 00.909 -33 28 03.39   14.25   13.43 14.0 ~ 62 0
69 NAME Great Attractor SCG 10 32 -46.0           ~ 535 0
70 NAME Hydra I Cluster ClG 10 36 36.0 -27 31 04           ~ 826 1
71 NAME UMa Region reg 11 00 +50.0           ~ 326 0
72 NAME Virgo Cluster ClG 12 26 32.1 +12 43 24           ~ 6509 0
73 ACO 1656 ClG 12 59 44.40 +27 54 44.9           ~ 4696 2
74 NAME Ursa Major Cluster ClG 15 08.8 +67 07           ~ 409 0

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2023.10.01-21:56:50

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