Canadian Cluster Comparison Project
"A survey that is good for the masses"

Members of the CCCP team
The Canadian Cluster Comparison Project (CCCP) is a study of a large sample of X-ray selected clusters with the aim of examining the relationship between baryonic tracers of cluster mass and to probe the cluster-to-cluster variation in the thermal properties of the hot intracluster medium (ICM). Previous work has been based on inhomogeneous data sets and small samples. The final CCCP sample will be of order 60 massive X-ray selected clusters of galaxies for which we obtained deep imaging from the Canada-France-Hawaii Telescope (CFHT). The imaging data are used to determine the cluster mass directly using weak gravitational lensing. Comparison with existing X-ray and SZ data, as well as the optical properties allows us to calibrate the various mass-tracer relations, which is important for planned large cluster abundance studies. In addition detailed comparison with simulations and X-ray observations will enable us to study the physical origins of these relations and their scatter, thus improving our knowledge of cluster formation.
CCCP sample of clusters
Image Gallery





Members of the  CCCP team
Henk Hoekstra
University of Victoria
Arif Babul
University of Victoria
Michael Balogh
University of Waterloo
Ian McCarthy
University of Victoria
Andisheh Mahdavi
University of Victoria
Jonathan Sievers
CITA, University of Toronto


CCCP sample of galaxy clusters
As CCCP is an ongoing project, the sample of galaxy clusters that is studied  changes over time.  Also, the sample is not clearly defined, although the clusters in the MegaCam sample we selected to have ASCA temperatures >5 keV. The CFH12k sample is based on a search through the CFHT archive at  CADC.  Roughly half of these clusters are part of the Canadian Network for Observational Cosmology (CNOC) sample, whereas the other half were observed by various people. Clusters for which B and R band data were available were selected, although some of the low-z clusters lack color information, but were included to extend the redshift range of the sample. The clusters (exept MS1231) have ASCA temperatures measured, and many have been observed with new generation X-ray telescopes such as Chandra and XMM. Some of the clusters are also being observed using the Cosmic Background Imager (CBI) to obtain a measure of the SZ decrement.


Clusters observed with CFH12k

name
redshift
B
R
CBI

Abell 68
0.255
v
v



Abell 209
0.206
v
v



Abell 267
0.23
v
v



Abell 370
0.375
v
v



Abell 383
0.187
v
v



Abell 963
0.206
v
v



Abell 1689
0.1832
v
v
v


Abell 1763
0.223
v
v



Abell 2218
0.1756
v
v



Abell 2219
0.2256
v
v



Abell 2390
0.2280
v
v



MS0016+16
0.5465
v
v
v


MS0906+11
0.1704
v
v



MS1224+20
0.3255
v
v



MS1231+15
0.2353
v
v



MS1358+62
0.3290
v
v



MS1455+22
0.2568
v
v



MS1512+36
0.3727
v
v



MS1621+26
0.4275
v
v



CL0024+16
0.39
v
v



Clusters (to be) observed with MegaCam

name
redshift g'
r'
CBI
1
Abell 115
0.20
v
v

2004B
2
Abell 223
0.21
v
v

2004B
3
Abell 520
0.20
v
v
v
2004B
4
Abell 521
0.25
v
v

2005B
5
Abell 586
0.17
v
v

2004B
6
Abell 611
0.29
v
v

2004B
7
Abell 697
0.28
v
v

2005B
8
Abell 851
0.41
v
v

2004B
9
Abell 959
0.29
v
v

2005A
10
Abell 1246
0.19
v
v

2005B
11
Abell 1758
0.28
v
v

2005A
12
Abell 1835
0.25
v
v

2005A
13
Abell 1914
0.171
v
v

2006A
14
Abell 1942
0.22
v
v

2006A
15
Abell 2104
0.16
v
v

2005A
16
Abell 2111
0.23
v
v

2006A
17
Abell 2163
0.20
v
v
v
2005A
18
Abell 2204
0.15
v
v

2005A
19
Abell 2259
0.16
v
v

2004B
20
Abell 2261
0.22
v
v

2005B
21
Abell 2537
0.30
v
v

2004B
22
MS0440+02
0.19
v
v

2004B
23
MS0451-03
0.54
v
v
v
2004B
24
MS1008-12
0.30
v
v

2004B
25
CL0910+41
0.44
v
v

2005B
26
CL1938+54
0.26
v
v

2004B
27
MACS J0717.5+3745
0.55
v
v

2005B
28
3C295
0.46
v
v

2006A
29
RX J1524.6+0957
0.516
v
v

2006A
30
RX J1347.5-1145
0.45
v
v

2005A



Image gallery





CFH12k B+R images (6.9'x6.9')

Abell 68 Abell 209 Abell 267

Abell 370 Abell 383 Abell 963

Abell 1689 Abell 1763 Abell 2218

Abell 2219 Abell 2390 MS 0016+16

MS 0906+11


Megacam g+r images (6.2'x6.2')

Abell 115 Abell 223 Abell 520

Abell 521
Abell 586
Abell 611

Abell 665
Abell 697
Abell 773

Abell 851 Abell 854
Abell 990

Abell 959 Abell 1246
Abell 1300

Abell 1451
Abell 1758
Abell 1835

Abell 1914
Abell 1942
Abell 2104

Abell 2111
Abell 2163 Abell 2204

Abell 2259 Abell 2261
Abell 2537

MS 0440+02 MS 0451-03 MS1008-12

CL0910+41
CL1938+54 MACS J0717.5+3745

3C295 RX J1524.6+0957 RX J1347.5-1145