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Combining Strong and Weak Gravitational Lensing in Abell 1689
- M. Limousin, J. Richard, K. Knudsen
- Physics
- 6 December 2006
We present a reconstruction of the mass distribution of galaxy cluster Abell 1689 at z = 0.18 using detected strong lensing features from deep ACS observations and extensive ground based…
A Wide-Field Survey of Two z ~ 0.5 Galaxy Clusters: Identifying the Physical Processes Responsible for the Observed Transformation of Spirals into S0s
We present new results from our comparative survey of two massive, intermediate-redshift galaxy clusters, Cl 0024+17 (z = 0.39) and MS 0451–03 (z = 0.54). Combining optical and UV imaging with…
The Dark Matter Distribution in the Central Regions of Galaxy Clusters: Implications for Cold Dark Matter
- D. Sand, T. Treu, Graham P. Smith, R. Ellis
- Physics
- 17 September 2003
We have undertaken a spectroscopic survey of gravitational arcs in a carefully chosen sample of six clusters, each containing a dominant brightest cluster galaxy. We use these systems to study the…
A Hubble Space Telescope lensing survey of X-ray luminous galaxy clusters – IV. Mass, structure and thermodynamics of cluster cores at z = 0.2
- Graham P. Smith, J. Kneib, I. Smail, P. Mazzotta, H. Ebeling, O. Czoske
- Physics
- 11 May 2005
We present a comprehensive space-based study of ten X-ray luminous galaxy clusters (L_X>=8e44erg/s[0.1-2.4keV]) at z=0.2. Hubble Space Telescope observations reveal numerous gravitationally-lensed…
Evolution since z = 1 of the Morphology-Density Relation for Galaxies
- Graham P. Smith, T. Treu, R. Ellis, S. Moran, A. Dressler
- Physics
- 18 March 2004
We measure the morphology-density relation of galaxies at z = 1 across the full 3 orders of magnitude in projected galaxy density available in low-redshift studies. Our study adopts techniques that…
A Keck Survey for Gravitationally Lensed Lyα Emitters in the Redshift Range 8.5 < z < 10.4: New Constraints on the Contribution of Low-Luminosity Sources to Cosmic Reionization
- D. Stark, R. Ellis, J. Richard, J. Kneib, Graham P. Smith, Michael R. Santos
- Physics
- 1 July 2007
We discuss new observational constraints on the abundance of faint high-redshift Lyα emitters secured from a deep Keck near-infrared spectroscopic survey that utilizes the strong magnification…
HUBBLE SPACE TELESCOPE OBSERVATIONS OF A SPECTACULAR NEW STRONG-LENSING GALAXY CLUSTER: MACS J1149.5+2223 AT z = 0.544
- Graham P. Smith, H. Ebeling, I. Smail
- Physics
- 10 November 2009
We present Advanced Camera for Surveys observations of MACS J1149.5+2223, an X-ray luminous galaxy cluster at z = 0.544 discovered by the Massive Cluster Survey. The data reveal at least seven…
A Wide-Field Hubble Space Telescope Study of the Cluster Cl 0024+1654 at z=0.4. II. The Cluster Mass Distribution
- J. Kneib, P. Hudelot, P. Natarajan
- Physics
- 15 July 2003
We present a comprehensive lensing analysis of the rich cluster Cl 0024+1654 (z = 0.395) based on panoramic sparse-sampled imaging conducted with the WFPC2 and STIS cameras on board the Hubble Space…
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
- S. Moran, R. Ellis, Graham P. Smith
- Physics
- 2 August 2005
We report results from a panoramic spectroscopic survey of 955 objects in the field of the rich cluster Cl 0024+1654 (z ≃ 0.4), complementing the HST imaging presented in the first paper in this…
LoCuSS: first results from strong-lensing analysis of 20 massive galaxy clusters at z= 0.2
- J. Richard, Graham P. Smith, S. Moran
- Physics
- 17 November 2009
We present a statistical analysis of a sample of 20 strong lensing clusters drawn from the Local Cluster Substructure Survey, based on high-resolution Hubble Space Telescope imaging of the cluster…
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