2019A&A...622A..78D


C.D.S. - SIMBAD4 rel 1.7 - 2021.05.17CEST02:56:32

2019A&A...622A..78D - Astronomy and Astrophysics, volume 622A, 78-78 (2019/2-1)

Link between brightest cluster galaxy properties and large scale extensions of 38 DAFT/FADA and CLASH clusters in the redshift range 0.2 < z < 0.9.

DURRET F., TARRICQ Y., MARQUEZ I., ASHKAR H. and ADAMI C.

Abstract (from CDS):


Context. In the context of large-scale structure formation, clusters of galaxies are located at the nodes of the cosmic web, and continue to accrete galaxies and groups along filaments. In some cases, they show a very large extension and a preferential direction. Brightest cluster galaxies (BCGs) are believed to grow through the accretion of many small galaxies, and their structural properties are therefore expected to vary with redshift. In some cases BCGs show an orientation comparable to that of the cluster to which they belong.
Aims. We analyse the morphological properties of 38 BCGs from the DAFT/FADA and CLASH surveys, and compare the position angles of their major axes to the direction of the cluster elongation at large scale (several Mpc).
Methods. The morphological properties of the BCGs were studied by applying the GALFIT software to HST images and fitting the light distribution with one or two Sersic laws, or with a Nuker plus a Sersic law. The cluster elongations at very large scale were estimated by computing density maps of red sequence galaxies.
Results. The morphological analysis of the 38 BCGs shows that in 11 cases a single Sersic law is sufficient to account for the surface brightness, while for all the other clusters two Sersic laws are necessary. In five cases, a Nuker plus a Sersic law give a better fit. For the outer Sersic component, the effective radius increases with decreasing redshift, and the effective surface brightness decreases with effective radius, following the Kormendy law. An agreement between the major axis of the BCG and the cluster elongation at large scale within ±30deg is found for 12 clusters out of the 21 for which the PAs of the BCG and of the large-scale structure can be defined.
Conclusions. The variation with redshift of the effective radius of the outer Sersic component agrees with the growing of BCGs by accretion of smaller galaxies from z=0.9 to 0.2, and it would be interesting to investigate this variation at higher redshift. The directions of the elongations of BCGs and of their host clusters and large scale structures surrounding them agree for 12 objects out of 21, implying that a larger sample is necessary to reach more definite conclusions.

Abstract Copyright: © ESO 2019

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

Simbad objects: 39

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Number of rows : 39

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 ClG 0016+16 ClG 00 18 33.3 +16 26 36           ~ 478 0
2 ACO 209 ClG 01 31 57.5 -13 34 35           ~ 257 0
3 ClG J0152-1358 ClG 01 52 41.3 -13 58 13           ~ 244 3
4 NAME PER SUPERCL SCG 02 33.2 +41 37           ~ 370 1
5 ClG J0329-0212 ClG 03 29 41.6 -02 11 47           ~ 114 0
6 MCS J0416.1-2403 ClG 04 16 08.380 -24 04 20.80           ~ 240 0
7 ClG J0429-0253 ClG 04 29 36.0 -02 53 09           ~ 101 0
8 ClG 0451-03 ClG 04 54 10.9 -03 01 07     20.0     ~ 333 0
9 ClG J0647+7015 ClG 06 47 50.0 +70 14 55           ~ 131 0
10 ClG J0717+3745 ClG 07 17 36.50 +37 45 23.0           ~ 385 0
11 ClG J0744+3927 ClG 07 44 52.5 +39 27 30           ~ 165 0
12 ACO 611 ClG 08 00 58.7 +36 02 49           ~ 232 0
13 ACO 851 ClG 09 42 56.6 +46 59 22           ~ 310 0
14 ClG J1037-1243 ClG 10 37 52.6 -12 43 44           ~ 39 0
15 ClG J1040-1155 ClG 10 40 41.6 -11 55 51           ~ 55 0
16 ClG J1054-1146 ClG 10 54 24.2 -11 46 18           ~ 50 0
17 ClG J1054-1245 ClG 10 54 43.5 -12 45 50           ~ 54 0
18 ClG J1103-1245 ClG 11 03 42.9 -12 45 18           ~ 16 1
19 MCS J1115.8+0129 ClG 11 15 52.1 +01 29 53           ~ 107 0
20 ClG J1138-1133 ClG 11 38 10.3 -11 33 59           ~ 44 0
21 MCS J1149.5+2223 ClG 11 49 35.8 +22 23 55           ~ 350 0
22 MCS J1206.2-0847 ClG 12 06 12.2 -08 48 02           ~ 192 0
23 ClG J1216-1201 ClG 12 16 45.10 -12 01 17.3           ~ 66 0
24 ClG J1226+3332 ClG 12 26 57.7 +33 32 50           ~ 196 0
25 ClG J1227-1138 ClG 12 27 53.9 -11 38 20           ~ 45 0
26 ClG J1232-1250 ClG 12 32 30.5 -12 50 33           ~ 48 0
27 ClG J1311-0311 ClG 13 11 01.7 -03 10 38           ~ 94 0
28 ZwCl 1332+5043 ClG 13 34 20.0 +50 30 54           ~ 36 0
29 ClG J1347-1145 ClG 13 47 33.5 -11 45 42           ~ 488 0
30 ClG J1354-1230 ClG 13 54 09.5 -12 30 59           ~ 45 0
31 ClG J1621+3810 ClG 16 21 25.5 +38 09 43           ~ 70 0
32 ClG J1701+6414 ClG 17 01 22.6 +64 14 09           ~ 64 0
33 ClG J1720+3536 ClG 17 20 16.8 +35 36 27           ~ 120 1
34 ACO 2261 ClG 17 22 28.3 +32 09 13           ~ 301 0
35 ClG J2129-0741 ClG 21 29 26.0 -07 41 28           ~ 142 0
36 ClG J2129+0005 ClG 21 29 40.5 +00 05 47           ~ 225 0
37 ClG 2137-2353 ClG 21 40 12.8 -23 39 27     18.5     ~ 353 0
38 ACO S 1063 ClG 22 48 54.3 -44 31 07           ~ 223 0
39 ClG J2328+1453 ClG 23 28 49.9 +14 53 12           ~ 19 0

    Equat.    Gal    SGal    Ecl

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2021.05.17-02:56:32

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