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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
earth and planetary sciences
Southern cosmology survey. I. optical cluster detections and predictions for the southern common-area millimeter-wave experiments
Astrophysical Journal, Volume 698, No. 2, Year 2009
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Description
We present first results from the Southern Cosmology Survey, a new multiwavelength survey of the southern sky coordinated with the Atacama Cosmology Telescope (ACT), a recently commissioned ground-based millimeter (mm)-band cosmic microwave background (CMB) experiment. This article presents full analysis of archival optical multiband imaging data covering an 8deg 2 region near right ascension 23 hr and declination -55°, obtained by the Blanco 4 m telescope and Mosaic-II camera in late 2005. We describe the pipeline we have developed to process this large data volume, obtain accurate photometric redshifts, and detect optical clusters. Our cluster finding process uses the combination of a matched spatial filter, photometric redshift probability distributions, and richness estimation. We present photometric redshifts, richness estimates, luminosities, and masses for eight new optically selected clusters with mass greater than 3 × 1014 M at redshifts out to 0.7. We also present estimates for the expected Sunyaev-Zel'dovich effect (SZE) signal from these clusters as specific predictions for upcoming observations by ACT, the South Pole Telescope and Atacama Pathfinder Experiment. © 2009. The American Astronomical Society.
Authors & Co-Authors
Menanteau, Felipe
United States, New Brunswick
Rutgers University–new Brunswick
Hughes, John P.
United States, New Brunswick
Rutgers University–new Brunswick
Jimenez, R.
Spain, Barcelona
Institució Catalana de Recerca I Estudis Avançats
United States, Princeton
Princeton University
Hërnàndez-Monteagudo, Carlos
Germany, Garching Bei Munchen
Max Planck Institute for Astrophysics
Verde, Licia
Spain, Barcelona
Institució Catalana de Recerca I Estudis Avançats
United States, Princeton
Princeton University
Kosowsky, Arthur B.
United States, Pittsburgh
University of Pittsburgh
Moodley, Kavilan
South Africa, Durban
University of Kwazulu-natal
Infante, Leopoldo
Chile, Santiago
Pontificia Universidad Católica de Chile
Roche, Nathan D.
United States, Philadelphia
University of Pennsylvania
Statistics
Citations: 9
Authors: 9
Affiliations: 8
Identifiers
Doi:
10.1088/0004-637X/698/2/1221
ISSN:
0004637X
e-ISSN:
15384357
Study Design
Cross Sectional Study
Study Approach
Quantitative