A Wide Field Survey of Two z=0.5 Galaxy Clusters
Welcome to our access page for data products from
our wide field survey of the clusters
Cl 0024+17 (z=0.4) and MS 0451-03
(z=0.54).
The Project
Our collaboration has been collecting, since 2001, wide-field multiwavelength photometry and spectroscopy of these two massive galaxy clusters, including large HST mosaics that allow morphological classification of all cluster galaxies. We have been pursuing this project in the belief that a comprehensive "case study" of two massive clusters with quite distinct properties can provide a valuable complement to surveys that scan the high redshift universe with more breadth but less depth. As part of our effort, we make available here our photometric and spectroscopic catalogs, along with supplementary data sets such as spiral rotation curves.
The primary members of our collaboration include:
Richard S. Ellis (Caltech), Tommaso Treu (UC Santa Barbara), Jean-Paul
Kneib (Marseille), Sean M. Moran (Caltech), Graham
P. Smith (Birmingham), Ian Smail (Durham), Jim Geach (Durham),
Priya Natarayan (Yale), R. Michael Rich (UCLA), Alan Dressler (OCIW), Oliver Czoske (Bonn), and Phil
Marshall (KIPAC/UC Santa Barbara).
If you would like access to information or data products not
listed below, please contact
us (Sean Moran) and we will try to make
available any additional data and measurements that are requested.
Publications and Press Releases
- A Wide-Field Survey of Two z~0.5 Galaxy Clusters: Identifying the Physical Processes Responsible for the Observed Transformation of Spirals into S0s.
- Moran, S.M., Ellis, R.S., Treu, T., Smith, G.P., Rich, R.M., & Smail, I. 2007, ApJ, in press: arXiv ADS
- The Dynamical Distinction Between Elliptical and Lenticular Galaxies in Distant Clusters: Further Evidence for the Recent Origin of S0 Galaxies
- Moran, S.M., Loh, B.L., Ellis, R.S., Treu, T., Bundy, K., & MacArthur, L.A. 2007, ApJ, 665, 1067 arXiv ADS
- Dynamical Evidence for Environmental Evolution of Intermediate Redshift Spiral Galaxies
- Moran, S.M., Miller, N., Treu, T., Ellis, R.S. & Smith, G.P. 2007, ApJ, 659, 1138 arXiv ADS
- A Panoramic Mid-infrared Survey of Two Distant Clusters
- Geach, J.E., Smail, I., Ellis, R.S., Moran, S.M., Smith, G.P., Treu, T., Kneib, J.-P., Edge, A.C. & Kodama, T. 2006, ApJ, 649, 661 arXiv ADS
- GALEX Observations of "Passive Spirals" in the Cluster Cl 0024+17: Clues to the Formation of S0 Galaxies
- Moran, S.M., Ellis, R.S., Treu, T., Salim, S., Rich, R.M., Smith, G.P., & Kneib, J.-P. 2006, ApJ, 641, L97 arXiv ADS
- A Wide Field Hubble Space Telescope Survey of the Cluster Cl 0024+16 at z=0.4. III: Spectroscopic Signatures of Environmental Evolution in Early Type Galaxies
- Moran, S.M., Ellis, R.S., Treu, T., Smail, I., Dressler, A. Coil, A.L., & Smith, G.P. 2005, ApJ, 634, 977 arXiv ADS
- Evolution Since z=1 of the Morphology-density Relation of Galaxies
- Smith, G.P., Treu, T., Ellis, R.S., Moran, S.M., & Dressler, A. 2005, ApJ, 620, 78arXiv ADS
- A Wide-Field Hubble Space Telescope Study of the Cluster Cl 0024+1654 at z=0.4. II. The Cluster Mass Distribution
- Kneib, J.-P., Hudelot, P., Ellis, R.S., Treu, T., Smith, G.P., Marshall, P., Czoske, O., Smail, I., & Natarajan, P. 2003, ApJ, 598, 804 arXiv ADS Press Release
- A Wide-Field Hubble Space Telescope Study of the Cluster Cl 0024+16 at z = 0.4. I. Morphological Distributions to 5 Mpc Radius
- Treu, T., Ellis, R.S., Kneib, J.-P., Dressler, A., Smail, I., Czoske, O., Oemler, A., & Natarajan, P. 2003, ApJ, 591, 53 arXiv ADS
(Updated 09/06/07)
Imaging
In addition to the HST mosaics, we have
obtained multi-wavelength imaging spanning from the UV to the mid-IR.
Archival ground-based optical imaging is from Subaru Suprime-Cam for
MS0451,
and CFHT CFH12k camera for Cl0024. J and Ks images were
taken with WIRC on the Palomar 200 inch. Seeing ranged from 0.6" to 1"
for all imaging.
Our master catalogs (below) include photometry from all optical/NIR data,
to the 3-sigma depths listed here:
Palomar images can be downloaded by clicking on the links in the
table, but please NOTE that files are > 150MB in size.
GALEX UV, Spitzer MIR and HST images are
available for download from the respective archives:
For further information on the data and survey, please refer to
Chapter 2 of the PhD
thesis of Sean Moran.
Photometric/Redshift Catalogs
We provide for download our `master catalogs' for each cluster, in
fits table format. These include photometry for all
objects detected and extracted in the HST and ground-based imaging
(73318 and 59728 objects for Cl 0024 and MS0451, respectively), and include
spectroscopic or photometric redshifts where available. Visually
determined morphological types are given for all objects brighter than I=22.5.
For each object in these catalogs, a variety of tags listing
photometry, redshifts, and positions are included. The associated
README for each catalog contains a description of
the contents of each catalog, along with important caveats and
warnings about using the various fields. These catalogs have undergone
minimal cleaning for public release and are still quite raw, so please
do consult the READMEs. In particular, the MS0451 catalog currently
contains a small number of duplicate objects, from repeat observations
and/or multiple objects in the same spectroscopic slit. For a list
of unique redshifts for MS0451, refer to Online Data below.
Plain text versions of these full catalogs are quite large, but we
provide here truncated catalogs containing only those galaxies with
spectroscopically confirmed redshifts, in both plain text and fits
table formats.
Spectral Line Measurements
Object names in each of these files can be cross-referenced with
the master catalogs. In MS0451, object names are listed in the field
'SPECNAME' of the master catalog, while in Cl0024, object names are
constructed by combining three master catalog tags as follows: p+'HST_POS+i+'HST_ID'+c+'HST_CHIP'
Spiral Rotation Curves
Online Data/Machine-Readable Tables
Questions or problems?
Please send email to smm at astro.caltech.edu.
B V R I J Ks Cl0024 27.8 26.9 26.6 25.9 21.6 19.7 MS0451 28.1 27.0 27.3 25.8 - 20.2
Cl0024 master catalog
(7.4MB) Cl0024 README
MS0451 master catalog
(4.3MB)
MS0451 README Cl0024
Text (278kB)
FITS (215kB)
MS0451
Text (235kB)
FITS (181kB)
Spectral line measurements for all
cluster members with quality spectra, along with a subset of field
galaxies (mostly in the range
0.3 < z < 0.65) are made available here, split into seperate text files
for early-type (elliptical+S0) and spiral galaxies for each cluster,
and for the field. For early type galaxies, we also include measured
velocity dispersions (See text of Moran
et al. 2007c). Each file with spectral line strenths has a companion
file (in the same format) that gives the uncertainty in each
measurement. Uncertainties marked 999.0 indicate that the line was not
measured with > 3 sigma significance, while uncertainties of 99.0
denote an emission line that is only an upper limit due to
nondetection of the surrounding continuum (i.e., the emission
line is at least as strong as indicated).
We provide in
this directory text files containing measured
rotation curves for all field and cluster spirals in the redshift
range 0.3
Machine-readable tables, as
presented in our papers Moran et al. (2005) and
Moran et al. (2007c) (when its ApJ issue is released)
can be downloaded through each paper's ADS entry.
Table 2 from Moran et al. (2007c) is
available for direct download here; this is a spectroscopic
redshift catalog for MS0451 that has been cleaned of all
duplicate entries (unlike the master catalog above).
Page last updated on 08/28/07.