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CLASH: Discovery of a Bright z~6.2 Dwarf Galaxy Quadruply Lensed by MACS J0329.6-0211
A. Zitrin, J. Moustakas, L. Bradley +22
We report the discovery of a z_{phot}=6.18^{+0.05}_{-0.07} (95% confidence level) dwarf galaxy, lensed into four images by the galaxy cluster MACS J0329.6-0211 (z_{l}=0.45). The ga…
The Hubble Space Telescope Cluster Supernova Survey: VI. The Volumetric Type Ia Supernova Rate
K. Barbary, G. Aldering, R. Amanullah +40
We present a measurement of the volumetric Type Ia supernova (SN Ia) rate out to z ~ 1.6 from the Hubble Space Telescope Cluster Supernova Survey. In observations spanning 189 orbi…
Early-type galaxies at z~1.3. IV. Scaling relations in different environments
A. Raichoor, S. Mei, S. A. Stanford +15
We present the Kormendy and mass-size relations for early-type galaxies (ETGs) as a function of environment at z~1.3. Our sample includes 76 visually classified ETGs with masses 10…
Recommendations of the Virtual Astronomical Observatory (VAO) Science Council for the VAO second year activity
G. Fabbiano, C. Brogan, D. Calzetti +9
The VAO (Virtual Astronomical Observatory) Science Council (VAO-SC) met on July 27-28, 2011 at the Harvard-Smithsonian Center for Astrophysics in Cambridge MA, to review the VAO pe…
Scaling Relations and Overabundance of Massive Clusters at z>~1 from Weak-Lensing Studies with HST
M. J. Jee, K. S. Dawson, H. Hoekstra +22
We present weak gravitational lensing analysis of 22 high-redshift (z >~1) clusters based on Hubble Space Telescope images. Most clusters in our sample provide significant lensing…
A Precise Cluster Mass Profile Averaged from the Highest-Quality Lensing Data
Keiichi Umetsu, Tom Broadhurst, Adi Zitrin +3
We outline our methods for obtaining high precision mass profiles, combining independent weak-lensing distortion, magnification, and strong-lensing measurements. For massive cluste…