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EDISCS:ESO Distant Clusters Survey  
 

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-Introduction
-Investigators
-Project
-Images
Ringberg Workshop 2004Ringberg Workshop 2004
PublicationsPublications
Data ReleaseData Release
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Introduction: Large Surveys- ESO Distant Clusters Survey

EDisCS aims at studying the evolution of cluster populations over more than 50 % of cosmic time by comparing the photometric and spectroscopic properties of galaxies in rich clusters at z~0.5 and z>0.8 with those of galaxies in well studied nearby clusters. Our samples consist of the most luminous objects in each redshift band in the external link Las Campanas Cluster Survey, by far the largest area optical survey for distant clusters so far completed.

The project runs in three phases:

Phase I: Cluster confirmation. We have carried out medium depth photometry in two bands with FORS2 in order to confirm the reality and the approximate redshifts of the cluster candidates.

Phase II: Deep photometry. We have obtained deep optical photometry using FORS2 at B, V and I for the 10 brightest confirmed clusters at z~0.5 and at B, R and I for the 10 brightest confirmed clusters at z~0.8. We have obtained deep near-IR photometry using SOFI on the NTT at K' for the nearer clusters and at J and K' for the more distant clusters. We expect to release the photometric data publically at the end of 2005.

Phase III: Spectroscopy. We are using FORS2 to obtain spectra of possible cluster members in the 20 clusters with deep photometry. For the more massive galaxies the goal will be to obtain both stellar population and kinematic information. The first set of spectroscopy on 5 clusters was released in 2004 and we expect to realease the spectroscopic data on the rest of the clusters publically at the end of 2005.

Please see the PublicationsPublications link for more information about papers and our data release.

The investigatorstop

EDisCS is being carried out by an international consortium of 25 astronomers from 6 countries. A group photo can be found Group Photohere

emailS. White ( MPA-Garching, D ) - Principal Investigator -

emailA. Aragón-Salamanca ( Nottingham, UK )

emailR. Bender ( Munich, D )

emailP. Best ( ROE, Scotland )

emailM. Bremer ( Bristol, UK )

emailS. Charlot (IAP, F )

emailD. Clowe ( Ohio University, USA)

emailJ. Dalcanton ( U.Washington, USA )

emailB. Fort ( IAP, F )

emailP. Jablonka ( EPFL, CH; CNRS, F)

emailG. Kauffmann ( MPA, D )

emailY. Mellier ( IAP, F )

emailR. Pello ( OMP, F )

emailB. Poggianti ( Padova, I )

emailH. Rottgering ( Leiden, NL )

emailP. Schneider ( Bonn, D )

emailD. Zaritsky ( U. Arizona, USA )

emailG. De Lucia ( MPA, D )

emailV. Desai ( Caltech, USA )

emailC. Halliday ( Goettingen, D )

emailB. Milvang-Jensen ( Copenhagen, DK )

emailG. Rudnick ( NOAO, USA )

emailR. Saglia ( Munich, D )

emailL. Simard ( U. Victoria, C )

emailS. Bamford ( Nottingham, UK )

emailI. Whiley ( Nottingham, UK )

emailO. Johnson (ROE, Scotland )

emailA. von der Linden (MPA-Garching, D )

emailJ. Moustakas (U. Arizona, USA )

emailR. Finn (Siena College, USA )

emailF. Barazza (Geneve, CH )

Scientific investigationstop

First projects planned by consortium scientists include:

Gravitational lensing, very high-z objects, galaxy counts, mass-to-light ratios, stellar population (early/late type galaxies), star formation and dust, morphologies, AGNs, scaling relations, luminosity function, cluster structure and dynamics, evolution of clusters and cluster galaxies.

Images of clusterstop

Low redshift clusters(z~0.5)

Cluster cl1238 - Composite image (BVI)

linkLarge jpg image of cl1238 (793 ko)

 

Cluster cl1119 - Composite image (BVI)

linkLarge jpg image of cl1119 (702 ko)

 

Cluster cl1420 - Composite image (BVI)

linkLarge jpg image of cl1420 (709 ko)

 

Cluster cl1411 - Composite image (BVI)

linkLarge jpg image of cl1411 (795 ko)

 

Cluster cl1353 - Composite image (BVI)

linkLarge jpg image of cl1353 (720 ko)

 

Cluster cl1301 - Composite image (BVI)

linkLarge jpg image of cl1301 (773 ko)

 

Cluster cl1232 - Composite image (BVI)

linkLarge jpg image of cl1232 (769 ko)

 

Cluster cl1202 - Composite image (BVI)

linkLarge jpg image of cl1202 (807 ko)

 

Cluster Cl1018 - Composite image (BVI)

linkLarge jpg image of cl1018 (665 ko)

 

Cluster cl1059 - Composite image (BVI)

linkLarge jpg image of cl1059 (771 ko)

 

High redshift clusters (0.6< z < 0.8)

Cluster cl1054-11 - Composite image (VRI)

linkLarge jpg image of cl1054-11 (594 ko)

 

Cluster cl1354 - Composite image (VRI)

linkLarge jpg image of cl1354 (487 ko)


Cluster cl1103 - Composite image (VRI)

linkLarge jpg image of cl1103 (562 ko)

 

Cluster cl1040 - Composite image (VRI)

linkLarge jpg image of cl1040 (545 ko)

 

Cluster cl1138 - Composite image (VRI)

linkLarge jpg image of cl1138 (577 ko)

 

Cluster cl1037 - Composite image (VRI)

linkLarge jpg image of cl1037 (623 ko)


Cluster cl1122 - Composite image (VRI)

linkLarge jpg image of cl1122 (565 ko)

 

Cluster cl1216 - Composite image (VRI)

linkLarge jpg image of cl1216 (528 ko)

 

Cluster cl1227 - Composite image (VRI)

linkLarge jpg image of cl1227 (461 ko)

 

Cluster cl1054-12 - Composite image (VRI)

linkLarge jpg image of cl1054-12 (623 ko)

 

Cluster cl1037 - Weak lensing mass reconstruction superposed on the I image.

linkLarge jpg image of cl1037 (389 ko)

 

Comments to: Gregory Rudnick grudnick@mpa-garching.mpg.detop
last modified 19/08/04