THE ATACAMA COSMOLOGY TELESCOPE: SUNYAEV–ZEL'DOVICH-SELECTED GALAXY CLUSTERS AT 148 GHz IN THE 2008 SURVEY

By T. Marriage, V. Acquaviva, P. Ade, P. Aguirre, M. Amiri, J. Appel, L. Barrientos, E. Battistelli, J. Richard Bond, B. Brown and 61 more. 2010

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We report on 23 clusters detected blindly as Sunyaev–ZEL'DOVICH (SZ) decrements in a 148 GHz, 455 deg2 map of the southern sky made with data from the Atacama Cosmology Telescope 2008 observing season. All SZ detections announced in this work have confirmed optical counterparts. Ten of the clusters are new discoveries. One newly discovered cluster, ACT-CL J0102−4915, with a redshift of 0.75 (photometric), has an SZ decrement comparable to the most massive systems at lower redshifts. Simulations of the cluster recovery method reproduce the sample purity measured by optical follow-up. In particular, for clusters detected with a signal-to-noise ratio greater than six, simulations are consistent with optical follow-up that demonstrated this subsample is 100% pure. The simulations further imply that the total sample is 80% complete for clusters with mass in excess of 6 × 1014 solar masses referenced to the cluster volume characterized by 500 times the critical density. The Compton y–X-ray luminosity mass comparison for the 11 best-detected clusters visually agrees with both self-similar and non-adiabatic, simulation-derived scaling laws.

Subfields: Astronomy and Astrophysics, Statistical and Nonlinear Physics

View Paper: https://www.semanticscholar.org/paper/0af3e5e77393a3943227917b81b1d0745c6c5372

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Citations in the corpus

Observational probes of cosmic acceleration (2012, background): “All three projects have released SZ-selected cluster samples (Vanderlinde et al., 2010; Marriage et al., 2011; Planck Collaboration et al., 2011a; Williamson et al., 2011; Reichardt et al., 2013).”
NINE-YEAR WILKINSON MICROWAVE ANISOTROPY PROBE (WMAP) OBSERVATIONS: COSMOLOGICAL PARAMETER RESULTS (2012, background): “In the past two years, many new SZ-selected clusters have been reported by Planck (Planck Collaboration VIII 2011), ACT (Marriage et al. 2011; Menanteau et al. 2012), and SPT (Williamson et al. 2011; Reichardt et al. 2012b), and they are providing new impetus for cosmological studies.”
THE ATACAMA COSMOLOGY TELESCOPE: ACT-CL J0102−4915 “EL GORDO,” A MASSIVE MERGING CLUSTER AT REDSHIFT 0.87 (2011, methodology): “In this paper we report on ACT-CL J0102−4915, a recentlydiscovered system (Marriage et al. 2011) which appears to be an excellent new example of a bullet cluster at redshift z = 0.87.”
GALAXY CLUSTERS DISCOVERED VIA THE SUNYAEV–ZEL'DOVICH EFFECT IN THE 2500-SQUARE-DEGREE SPT-SZ SURVEY (2014, background): “…et al. 2000), REFLEX (Böhringer et al. 2004), and MACS (Ebeling et al. 2001) cluster catalogs; the 861 confirmed clusters from the all-sky Planck survey (Planck Collaboration et al. 2014a); and the 91 clusters that comprise the ACT cluster sample (Marriage et al. 2011; Hasselfield et al. 2013).”
The Atacama Cosmology Telescope: A Catalog of >4000 Sunyaev–Zel’dovich Galaxy Clusters (2020, background): “…by the South Pole Telescope (SPT; e.g., Williamson et al. 2011; Bleem et al. 2015b, 2020; Huang et al. 2020a), the Planck satellite mission (Planck Collaboration et al. 2014b, 2016b), and the Atacama Cosmology Telescope (ACT; Marriage et al. 2011; Hasselfield et al. 2013; Hilton et al. 2018).”
COSMOLOGICAL CONSTRAINTS FROM SUNYAEV–ZEL'DOVICH-SELECTED CLUSTERS WITH X-RAY OBSERVATIONS IN THE FIRST 178 deg2 OF THE SOUTH POLE TELESCOPE SURVEY (2011, background): “Recently, the first SZ cluster catalogs from three surveys have been released: the South Pole Telescope (SPT; Staniszewski et al. 2009; Vanderlinde et al. 2010; Williamson et al. 2011), the Atacama Cosmology Telescope (Marriage et al. 2011), and the Planck satellite (Planck Collaboration et al. 2011”
GALAXY CLUSTERS DISCOVERED VIA THE SUNYAEV–ZEL’DOVICH EFFECT IN THE FIRST 720 SQUARE DEGREES OF THE SOUTH POLE TELESCOPE SURVEY (2012, methodology): “We query the SIMBAD4 and NED5 databases, and we manually search more recently published cluster catalogs such as the PLCKESZ (Planck Collaboration et al. 2011) and ACT-CL (Marriage et al. 2011) catalogs.”