2008MNRAS.385...23L

Query : 2008MNRAS.385...23L

2008MNRAS.385...23L - Mon. Not. R. Astron. Soc., 385, 23-39 (2008/March-3)

Photometric properties and scaling relations of early-type Brightest Cluster Galaxies.

LIU F.S., XIA X.Y., MAO S., WU H. and DENG Z.G.

Abstract (from CDS):

We investigate the photometric properties of the early-type Brightest Cluster Galaxies (BCGs) using a carefully selected sample of 85 BCGs from the C4 cluster catalogue with a redshift of less than 0.1. We perform accurate background subtractions and surface photometry for these BCGs to 25mag/arcsec2 in the Sloan r band. By quantitatively analysing the gradient of the Petrosian profiles of BCGs, we find that a large fraction of BCGs have extended stellar envelopes in their outskirts; more luminous BCGs tend to have more extended stellar haloes that are likely to be connected with mergers. A comparison sample of elliptical galaxies was chosen with similar apparent magnitude and redshift ranges, for which the same photometric analysis procedure is applied. We find that BCGs have steeper size-luminosity (R ∝ Lα) and Faber-Jackson (L ∝ σβ) relations than the bulk of early-type galaxies. Furthermore, the power-law indices (α and β) in these relations increase as the isophotal limits become deeper. For isophotal limits from 22 to 25mag/arcsec2, BCGs are usually larger than the bulk of early-type galaxies, and a large fraction (∼49 per cent) of BCGs have discy isophotal shapes. The differences in the scaling relations are consistent with a scenario where the dynamical structure and formation route of BCGs may be different from the bulk of early-type galaxies; in particular dry (dissipationless) mergers may play a more important role in their formation. We highlight several possible dry merger candidates in our sample.

Abstract Copyright: 2008 The Authors. Journal compilation © 2008 RAS

Journal keyword(s): galaxies: elliptical and lenticular, cD - galaxies: clusters: general - galaxies: photometry

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 - 2026 		#notes
1 ZwCl 0027-0036 ClG 00 29 27.73 -00 11 49.6           ~ 15 0
2 ACO 85 ClG 00 41 36.21 -09 19 30.4           ~ 974 0
3 SDSS-C4 2055 C?G 00 55 39.9 -10 55 02           ~ 2 0
4 ACO 117 ClG 00 55 47.10 -09 58 24.6           ~ 79 0
5 ACO 119 ClG 00 56 08.57 -01 12 00.8           ~ 577 2
6 Z 384-34 BiC 00 56 16.101 -01 15 19.77   14.40 14.45     ~ 82 1
7 Z 384-36 LIN 00 56 22.8440948136 -01 12 35.090623512   15.1759062 14.1810875     ~ 39 0
8 SDSS-C4 2093 C?G 00 56 50.3 -00 55 31           ~ 2 0
9 SDSS-C4 2030 ClG 00 57 16.4 -00 36 36           ~ 4 0
10 SDSS-C4 2049 ClG 01 07 22.08 +14 15 23.8           ~ 16 0
11 ACO 160 ClG 01 12 59.98 +15 30 05.3           ~ 181 0
12 ACO 168 ClG 01 15 07.58 +00 19 10.8           ~ 379 2
13 SDSS-C4 2197 C?G 01 15 17.0 +13 35 46           ~ 2 0
14 [YSS2008] 547 ClG 01 20 54.66 -00 32 38.4           ~ 4 0
15 ZwCl 0134-0045 ClG 01 37 12.873 -00 30 15.53           ~ 5 0
16 SDSS-C4 2109 C?G 01 37 18.3 -09 06 53           ~ 2 0
17 SDSS-C4 2148 C?G 01 37 37.3 -09 17 25           ~ 2 0
18 SDSS-C4-DR3 2073 ClG 01 54 29.71 -09 42 49.2           ~ 6 0
19 ACO 279 ClG 01 56 25.73 +01 03 22.4           ~ 54 0
20 ZwCl 0159-0121 ClG 02 02 17.282 -01 07 40.22           ~ 5 0
21 SDSS-C4 2130 C?G 03 23 01.9 -06 37 36           ~ 2 0
22 SDSS-C4 2074 ClG 03 25 46.6 -00 35 27           ~ 5 0
23 SDSS-C4 3129 ClG 07 56 00.87 +41 12 47.1           ~ 5 0
24 SDSS-C4 3048 ClG 07 56 46.33 +45 50 37.2           ~ 5 0
25 SDSS-C4 3235 C?G 07 58 31.7 +37 43 02           ~ 2 0
26 SDSS-C4 3140 ClG 08 03 02.2 +40 18 24           ~ 4 0
27 SDSS-C4 3151 ClG 08 03 43.1 +40 00 59           ~ 4 0
28 ClG J0810+4216 ClG 08 10 24.2 +42 16 19           ~ 29 0
29 SDSS-C4 1206 C?G 08 45 05.0 +02 12 06           ~ 2 0
30 SDSS-C4 3110 ClG 08 47 35.4 +53 49 56           ~ 5 0
31 ZwCl 0854+5434 ClG 08 58 39.42 +54 21 00.6           ~ 10 0
32 SDSS-C4 3205 ClG 09 00 53.83 +55 02 09.9           ~ 5 0
33 SDSS-C4 3246 C?G 09 07 36.9 +49 43 21           ~ 2 0
34 SDSS-C4 3102 ClG 09 19 18.99 +54 53 24.7           ~ 5 0
35 SDSS-C4 3263 ClG 09 22 24.3 +54 51 45           ~ 4 0
36 ZwCl 0919-0016 ClG 09 22 39.01 -00 23 14.2           ~ 9 0
37 SDSS-C4 1048 ClG 09 51 48.1 +01 09 47           ~ 4 0
38 SDSS-C4 1233 ClG 10 03 31.3 +00 29 48           ~ 5 0
39 SDSS-C4 3063 ClG 10 05 03.88 +53 07 27.2           ~ 5 0
40 ACO 957 ClG 10 14 02.35 -00 53 30.0           ~ 225 2
41 SDSS-C4 3047 ClG 10 33 06.23 +56 47 44.3           ~ 7 0
42 SDSS-C4 3068 ClG 10 33 34.0 +56 55 12           ~ 4 0
43 SDSS-C4 3055 ClG 10 36 54.33 +50 07 17.4           ~ 6 0
44 SDSS-C4 1076 ClG 10 39 05.3 +04 37 25           ~ 4 0
45 SDSS-C4 3232 ClG 10 49 06.11 +57 50 59.3           ~ 5 0
46 SDSS-C4 3094 ClG 10 49 25.7 +56 39 32           ~ 5 0
47 SDSS-C4 1156 ClG 10 49 58.854 +00 19 20.31           ~ 7 0
48 SDSS-C4 3032 ClG 10 51 47.42 +55 21 14.6           ~ 7 0
49 SDSS-C4 3081 C?G 10 53 16.8 +56 19 46           ~ 2 0
50 ACO 1139 ClG 10 58 01.63 +01 38 05.4           ~ 162 3
51 SDSS-C4 3311 C?G 11 03 58.8 +57 19 48           ~ 2 0
52 SDSS-C4 1332 C?G 11 11 04.4 -00 47 37           ~ 2 0
53 SDSS-C4 3012 ClG 11 12 04.32 +57 05 03.0           ~ 6 0
54 SDSS-C4 1265 ClG 11 14 53.2 +04 04 13           ~ 4 0
55 ACO 1364 ClG 11 43 39.67 -01 44 41.8           ~ 61 0
56 SDSS-C4-DR3 1057 ClG 11 51 18.45 +05 02 50.8           ~ 6 0
57 ACO 1424 ClG 11 57 30.50 +05 05 24.5           ~ 68 0
58 ACO 1452 ClG 12 03 32.23 +51 43 34.9           ~ 77 0
59 ZwCl 1207+0542 ClG 12 10 29.06 +05 21 49.7           ~ 41 0
60 SDSS-C4 1142 ClG 12 14 36.10 +05 26 59.2           ~ 5 0
61 ACO 1507 ClG 12 14 54.31 +59 53 09.5           ~ 63 0
62 SDSS-C4 1186 C?G 12 15 47.6 +03 16 53           ~ 2 0
63 SDSS-C4 3286 C?G 12 17 45.7 +63 27 44           ~ 2 0
64 ACO 1516 ClG 12 18 48.82 +05 15 45.4           ~ 51 1
65 ACO 1534 ClG 12 24 42.759 +61 28 14.61           ~ 25 0
66 ZwCl 1227+6411 C?G 12 29 40.2 +63 59 21           ~ 2 0
67 SDSS-C4 1176 ClG 12 38 52.97 +06 11 11.3           ~ 7 0
68 SDSS-C4-DR3 1112 ClG 12 42 13.60 -02 04 26.4           ~ 6 0
69 SDSS-C4 1005 ClG 12 45 05.3 +01 47 30           ~ 4 0
70 SDSS-C4 1102 GrG 12 46 56.60 +00 15 27.4           ~ 13 0
71 ACO 1650 ClG 12 58 42.0 -01 45 45           ~ 325 0
72 ACO 1663 ClG 13 02 52.55 -02 31 04.0           ~ 112 0
73 SDSS-C4 3117 C?G 13 18 17.4 +66 26 22           ~ 2 0
74 ZwCl 1316-0044 ClG 13 19 16.58 -00 55 01.2           ~ 20 0
75 BAX 201.5734+00.2261 ClG 13 26 21.77 +00 12 24.2     15.80     ~ 36 0
76 ACO 1767 ClG 13 36 06.92 +59 10 34.3           ~ 182 0
77 SDSS-C4 1046 ClG 13 44 32.44 +02 05 16.4           ~ 9 0
78 ACO 1809 ClG 13 53 07.68 +05 08 32.7           ~ 179 0
79 SDSS-C4 1187 ClG 14 07 48.54 -00 55 52.8           ~ 5 0
80 SDSS-C4 1162 ClG 14 24 27.49 +02 44 08.6           ~ 5 0
81 SDSS-C4 1133 ClG 14 29 56.0 +00 19 09           ~ 4 0
82 SDSS-C4 3086 ClG 14 36 38.3 +60 29 56           ~ 4 0
83 SDSS-C4 1324 ClG 14 51 48.9 -00 13 22           ~ 4 0
84 SDSS-C4 1366 ClG 14 52 54.8 -00 06 07           ~ 4 0
85 SDSS-C4 1344 GrG 15 06 13 +03 43.0           ~ 4 0
86 SDSS-C4 1065 ClG 15 06 15.1 +03 09 21           ~ 5 0
87 SDSS-C4 1024 ClG 15 06 45.04 -01 16 42.0           ~ 6 0
88 WBL 551 GrG 15 11 47.75 +04 30 27.7           ~ 10 0
89 SDSS-C4 1362 C?G 15 12 23.4 +03 22 57           ~ 2 0
90 SDSS-C4 1053 GrG 15 12 52.969 +04 30 50.41           ~ 7 0
91 SDSS-C4 1211 ClG 15 13 01.8 +02 01 30           ~ 4 0
92 NGC 5906 GiG 15 15 53.687 +56 19 43.86   11.4       ~ 807 0
93 [SPD2011] 24962 ClG 15 29 16.07 +52 53 44.8           ~ 16 0
94 SDSS-C4 3268 ClG 15 57 09.5 +54 38 36           ~ 4 0
95 ACO 2149 ClG 16 00 53.08 +53 56 57.6           ~ 79 0
96 SDSS-C4 3024 ClG 16 09 38.54 +53 04 05.8           ~ 6 0
97 SDSS-C4 3095 ClG 16 11 00.38 +52 27 22.0           ~ 5 0
98 ACO 2192 ClG 16 27 24.4 +42 40 43           ~ 65 0
99 SDSS-C4 3143 C?G 16 28 50.3 +40 59 28           ~ 2 0
100 SDSS-C4 3021 ClG 16 29 24.8 +40 50 15           ~ 4 0
101 SDSS-C4 3282 ClG 16 37 04.22 +44 16 43.8           ~ 3 0
102 ZwCl 1634+4412 ClG 16 37 47.92 +44 18 35.2           ~ 7 0
103 SDSS-C4 3248 C?G 16 54 37.5 +37 37 26           ~ 2 0
104 SDSS-C4 3034 ClG 16 56 32.11 +39 18 33.9           ~ 6 0
105 ACO 2245 ClG 17 02 38.26 +33 30 10.0           ~ 66 0
106 ACO 2255 ClG 17 12 56.0 +64 04 06           ~ 605 0
107 SDSS-C4 3285 C?G 17 19 24.0 +56 40 17           ~ 2 0
108 SDSS-C4 2031 ClG 21 39 00.49 -00 30 51.7           ~ 5 0
109 SDSS-C4 2012 ClG 21 54 02.06 -08 37 54.5           ~ 7 0
110 ACO 2399 ClG 21 57 19.01 -07 50 57.5           ~ 197 0
111 SDSS-C4 2026 ClG 22 07 19.22 -07 32 33.9           ~ 7 0
112 ACO 2428 ClG 22 16 07.01 -09 20 19.5           ~ 62 0
113 SDSS-C4-DR3 2110 ClG 22 35 14.45 -01 08 46.1           ~ 10 0
114 ZwCl 2237-0100 ClG 22 39 49.28 -00 55 33.6           ~ 8 0
115 CAN 180 C?G 23 24 21.3 +14 25 11           ~ 2 0
116 SDSS-C4 2178 C?G 23 25 05.5 +15 11 29           ~ 2 0
117 ACO 2670 ClG 23 54 10.51 -10 23 06.8           ~ 364 0
118 NAME Local Group GrG ~ ~           ~ 9325 0

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