2007ApJ...671.1471B

Query : 2007ApJ...671.1471B

2007ApJ...671.1471B - Astrophys. J., 671, 1471-1496 (2007/December-3)

The luminosity function of low-redshift Abell galaxy clusters.

BARKHOUSE W.A., YEE H.K.C. and LOPEZ-CRUZ O.

Abstract (from CDS):

We present the results from a survey of 57 low-redshift Abell galaxy clusters to study the radial dependence of the luminosity function (LF). The dynamical radius of each cluster, r200, was estimated from the photometric measurement of cluster richness, Bgc. The shape of the LFs is found to correlate with radius such that the faint-end slope, α, is generally steeper on the cluster outskirts. The sum of two Schechter functions provides a more adequate fit to the composite LFs than a single Schechter function. LFs based on the selection of red and blue galaxies are bimodal in appearance. The red LFs are generally flat for -22≤MRC≤-18, with a radius-dependent steepening of α for MRC>-18. The blue LFs contain a larger contribution from faint galaxies than the red LFs. The blue LFs have a rising faint-end component (α~-1.7) for MRC>-21, with a weaker dependence on radius than the red LFs. The dispersion of M* was determined to be 0.31 mag, which is comparable to the median measurement uncertainty of 0.38 mag. This suggests that the bright end of the LF is universal in shape at the 0.3 mag level. We find that M* is not correlated with cluster richness when using a common dynamical radius. Also, we find that M* is weakly correlated with BM type such that later BM-type clusters have a brighter M*. A correlation between M* and radius was found for the red and blue galaxies such that M* fades toward the cluster center.

Abstract Copyright: ∼

Journal keyword(s): Galaxies: Clusters: General - Galaxies: Evolution - Galaxies: Formation - Galaxies: Luminosity Function, Mass Function

Simbad objects: 58

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Number of rows : 58
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024 		#notes
1 ACO 21 ClG 00 20 38.75 +28 41 40.5           ~ 106 0
2 ACO 85 ClG 00 41 36.21 -09 19 30.4           ~ 909 0
3 ACO 84 ClG 00 41 36.85 +21 24 25.7           ~ 63 0
4 ACO 98 ClG 00 46 29.2 +20 28 06           ~ 142 0
5 ACO 154 ClG 01 10 58.1 +17 39 56           ~ 140 1
6 ACO 168 ClG 01 15 07.58 +00 19 10.8           ~ 361 2
7 ACO 260 ClG 01 50 46.811 +33 04 22.17           ~ 65 0
8 ACO 399 ClG 02 57 56.4 +13 00 59           ~ 396 0
9 ACO 401 ClG 02 58 56.9 +13 34 56           ~ 566 0
10 ACO 407 ClG 03 01 43.7 +35 49 48           ~ 110 0
11 ACO 415 ClG 03 06 47 -12 02.5           ~ 63 0
12 ACO 496 ClG 04 33 38.8 -13 15 59           ~ 694 2
13 ACO 514 ClG 04 47 40.0 -20 25 44           ~ 141 0
14 ACO 634 ClG 08 14 33 +58 02.9           ~ 98 0
15 ACO 629 ClG 08 15 00 +66 25.9           ~ 38 0
16 ACO 646 ClG 08 22 10.0 +47 05 58           ~ 99 1
17 ACO 671 ClG 08 28 48.68 +30 27 07.0           ~ 164 0
18 ACO 665 ClG 08 30 45.2 +65 52 55           ~ 437 0
19 ACO 690 ClG 08 39 14.34 +28 48 47.0           ~ 81 0
20 ACO 779 ClG 09 20 02.70 +33 45 29.7           ~ 253 0
21 ACO 957 ClG 10 14 02.35 -00 53 30.0           ~ 211 2
22 ACO 999 ClG 10 23 22.1 +12 51 48           ~ 91 1
23 ACO 1142 ClG 11 00 56.74 +10 30 15.2           ~ 153 1
24 ACO 1213 ClG 11 16 26.98 +29 16 23.9           ~ 151 0
25 ACO 1291 ClG 11 32 11.20 +56 01 31.3           ~ 132 0
26 ACO 1413 ClG 11 55 12.87 +23 23 46.9           ~ 430 0
27 ACO 1569 ClG 12 36 19.49 +16 32 46.8           ~ 79 0
28 ACO 1650 ClG 12 58 42.0 -01 45 45           ~ 304 0
29 ACO 1656 ClG 12 59 44.40 +27 54 44.9           ~ 4803 2
30 ACO 1775 ClG 13 41 50.60 +26 21 10.6           ~ 304 0
31 ACO 1795 ClG 13 48 50.48 +26 35 07.4           ~ 1267 0
32 ACO 1913 ClG 14 26 43.42 +16 40 26.1           ~ 97 1
33 ACO 1983 ClG 14 52 59.33 +16 46 11.0           ~ 242 1
34 ZwCl 1455+2232 ClG 14 57 15.2 +22 20 30     18.62 20.04   ~ 294 0
35 ACO 2022 ClG 15 04 18.34 +28 30 25.5           ~ 92 0
36 ACO 2029 ClG 15 10 56.2 +05 44 42           ~ 943 0
37 ACO 2152 ClG 16 05 22.4 +16 26 55           ~ 159 0
38 ACO 2247 ClG 16 47 22 +81 34.0           ~ 58 0
39 ACO 2244 ClG 17 02 40.33 +34 02 58.7           ~ 281 0
40 ACO 2256 ClG 17 03 09.4 +78 39 36           ~ 885 1
41 ACO 2255 ClG 17 12 50.04 +64 03 10.6           ~ 568 0
42 ACO 2271 ClG 17 17 17.5 +78 01 00           ~ 69 0
43 ACO 2328 ClG 20 48 09.8 -17 50 14           ~ 72 0
44 ACO 2356 ClG 21 35 45.13 +00 11 21.1           ~ 46 0
45 ACO 2384 ClG 21 52 20.9 -19 32 53           ~ 109 0
46 ACO 2399 ClG 21 57 19.01 -07 50 57.5           ~ 185 0
47 ACO 2410 ClG 22 02 03 -09 53.5           ~ 60 0
48 ACO 2415 ClG 22 05 25.0 -05 35 23           ~ 115 1
49 ACO 2420 ClG 22 10 22.5 -12 11 13           ~ 114 0
50 ACO 2440 ClG 22 23 52.6 -01 35 47           ~ 125 1
51 ACO 2554 ClG 23 12 20.0 -21 29 50           ~ 94 1
52 ACO 2556 ClG 23 13 03.3 -21 37 40           ~ 79 0
53 ACO 2593 ClG 23 24 27.15 +14 33 40.2           ~ 218 0
54 ACO 2597 ClG 23 25 19.70 -12 07 27.7           ~ 539 0
55 ACO 2626 ClG 23 36 31.0 +21 09 36           ~ 247 0
56 ACO 2634 ClG 23 38 18.4 +27 01 37           ~ 503 2
57 ACO 2657 ClG 23 44 51.0 +09 08 40           ~ 269 3
58 ACO 2670 ClG 23 54 10.51 -10 23 06.8           ~ 352 0

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