Candidate Clusters of Galaxies at z > 1.3 Identified in the Spitzer South Pole Telescope Deep Field Survey

• Published in: The Astrophysical Journal
• Main Authors: Rettura, Alessandro, Martinez-Manso, J., Stern, Daniel, Mei, Simona, Ashby, Matthew L. N., Brodwin, Mark, Gettings, D., Gonzalez, Anthony H., Stanford, Spencer Adam, Bartlett, James G.
• Other Authors: Jet Propulsion Laboratory, California Institute of Technology, MS 169-234, Pasadena, CA 91109, USA, Department of Astronomy, University of Florida, Galaxies, Etoiles, Physique, Instrumentation (GEPI), Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Université Paris Cité (UPCité), Infrared Processing Analysis Center, California Institute of Technology (IPAC), Harvard-Smithsonian Center for Astrophysics, Department of Physics and Astronomy, University of Missouri, Kansas City, MO 64110, USA, Department of Physics, Le Conte Hall, University of California, AstroParticule et Cosmologie (APC (UMR_7164)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris
• Format: Article in Journal/Newspaper
• Language: English
• Published: HAL CCSD 2014
• Subjects: [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph]; South pole
• Online Access: https://hal.science/hal-03743081; https://doi.org/10.1088/0004-637X/797/2/109

International audience We present 279 galaxy cluster candidates at z > 1.3 selected from the 94 deg 2 Spitzer South Pole Telescope Deep Field (SSDF) survey. We use a simple algorithm to select candidate high-redshift clusters of galaxies based on Spitzer/IRAC mid-infrared data combined with shallow all-sky optical data. We identify distant cluster candidates adopting an overdensity threshold that results in a high purity (80%) cluster sample based on tests in the Spitzer Deep, Wide-Field Survey of the Boötes field. Our simple algorithm detects all three 1.4 < z