VizieR Online Data Catalog: SZ galaxy clusters from the ACTPol (Hilton+, 2018)

A description of the Atacama Cosmology Telescope (ACT) ACTPol maps used in this work can be found in Naess+ (2014JCAP...10..007N) and Louis+ (2017JCAP...06..031L).

ACTPol observed two deep fields on the celestial equator, referred to as D5 and D6, from 2013 September 11 to 2013 December 14 (Season 13), using a single 148GHz detector array (PA1). Each of the D5 and D6 fields covers an area of roughly 70deg². In Season 14 (2014-August-20--December-31), an additional 148GHz detector array was added to the ACTPol receiver (PA2), and we obtained observations of a wider, approximately 700deg² field, referred to as D56, in which the deeper D5 and D6 fields are embedded.

The ACTPol D56 field also overlaps with the previous ACT survey of the celestial equator, conducted using the Millimeter Bolometric Array Camera (MBAC) receiver (Swetz+ 2011ApJS..194...41S) at a frequency of 148GHz. These observations took place during 2009-2010 and covered the entire 270deg² SDSS S82 optical survey region.

In this work, we combine the 148GHz observations obtained by ACT using both the MBAC and ACTPol receivers. The resulting survey area, which we refer to as the E-D56 field, is shown in Figure 1.

We obtained riz imaging of 24 cluster candidates located within the ACTPol E-D56 survey area using the SOAR telescope. We used the SOAR Optical Imager (SOI) for the first observing run, during 2015-October-31--2015-November-2. For the second run, which took place during 2017 January 5–9, we used the Goodman Spectrograph. See Section 4.1.1.

We observed seven candidates in the Ks band with the Near-infrared Camera and Fabry-Perot Spectrometer (NICFPS) at the ARC 3.5m telescope on 2015-October-2 (0.8" seeing) and 2015-November-23 (1.3" seeing). See Section 4.1.2.

We obtained spectroscopic redshifts for five clusters with the SALT, using the Robert Stobie Spectrograph (RSS) in its multi-object spectroscopy (MOS) mode. The observations were obtained in programs 2015-2-MLT-003 and 2016-1-MLT-008. See Section 4.2.

(1 data file).