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Document History for Document ID 448333.0
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| ID:
448333.0,
MPI für Astronomie / Publikationen_mpia |
| Spectroscopic confirmation of a massive red-sequence-selected galaxy cluster at z = 1.34 in the SpARCS-South Cluster Survey |
| Authors: | Wilson, Gillian; Muzzin, Adam; Yee, H. K. C.; Lacy, Mark; Surace, Jason; Gilbank, David; Blindert, Kris; Hoekstra, Henk; Majumdar, Subhabrata; Demarco, Ricardo; Gardner, Jonathan P.; Gladders, Michael D.; Lonsdale, Carol | | Language: | English | | Date of Publication (YYYY-MM-DD): | 2009 | | Title of Journal: | The Astrophysical Journal | | Journal Abbrev.: | ApJ | | Volume: | 698 | | Issue / Number: | 2 | | Start Page: | 1943 | | End Page: | 1950 | | Review Status: | Peer-review | | Audience: | Experts Only | | Abstract / Description: | The Spitzer Adaptation of the Red-sequence Cluster Survey (SpARCS) is a z'-passband imaging survey, consisting of deep (z' sime 24 AB) observations made from both hemispheres using the CFHT 3.6 m and CTIO 4 m telescopes. The survey was designed with the primary aim of detecting galaxy clusters at z > 1. In tandem with pre-existing 3.6 mum observations from the Spitzer Space Telescope SWIRE Legacy Survey, SpARCS detects clusters using an infrared adaptation of the two-filter red-sequence cluster technique. The total effective area of the SpARCS cluster survey is 41.9 deg2. In this paper, we provide an overview of the 13.6 deg2 Southern CTIO/MOSAIC II observations. The 28.3 deg2 Northern CFHT/MegaCam observations are summarized in a companion paper by Muzzin et al. In this paper, we also report spectroscopic confirmation of SpARCS J003550--431224, a very rich galaxy cluster at z = 1.335, discovered in the ELAIS-S1 field. To date, this is the highest spectroscopically confirmed redshift for a galaxy cluster discovered using the red-sequence technique. Based on nine confirmed members, SpARCS J003550--431224 has a preliminary velocity dispersion of 1050 ± 230 km s--1. With its proven capability for efficient cluster detection, SpARCS is a demonstration that we have entered an era of large, homogeneously selected z > 1 cluster surveys. | | Free Keywords: | cosmology: observations; galaxies: clusters: general; galaxies: high-redshift; infrared: galaxies; surveys | | External Publication Status: | published | | Document Type: | Article |
| Communicated by: | N. N. | | Affiliations: | MPI für Astronomie
| | Identifiers: | URL:http://adsabs.harvard.edu/abs/2009ApJ...698.1943W [ID No:1] | |
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