Redshifts, Sample Purity, and BCG Positions for the Galaxy Cluster Catalog From the First 720 Square Degrees of the South Pole Telescope Survey

Song, J.; Zenteno, A.; Stalder, B.; Desai, S.; Bleem, L. E.; Aird, K. A.; Armstrong, R.; Ashby, M. L. N.; Bayliss, M.; Bazin, G.; Benson, B. A.; Bertin, E.; Brodwin, M.; Carlstrom, J. E.; Chang, C. L.; Cho, H. M.; Clocchiatti, A.; Crawford, T. M.; Crites, A. T.; Haan, T. de; Dobbs, M.; Dudley, J. P.; Foley, R. J.; George, E. M.; Gettings, D.; Gladders, M. D.; Gonzalez, Anthony H.; Halverson, N. W.; Harrington, N. L.; High, F. W.; Holder, G. P.; Holzapfel, W. L.; Hoover, S.; Hrubes, J. D.; Joy, M.; Keisler, R.; Knox, L.; Lee, A. T.; Leitch, E. M.; Liu, J.; Lueker, M.; Luong-Van, D.; Marrone, Daniel P.; McDonald, Michael; McMahon, Jeffrey; Mehl, J.; Meyer, S. S.; Mocanu, L. M.; Mohr, J. J.; Montroy, T. E.; Natoli, T.; Nurgaliev, D.; Padin, S.; Plagge, T.; Pryke, C.; Reichardt, Christian; Rest, A.; Ruel, J.; Ruhl, J. E.; Saliwanchik, B. R.; Saro, A.; Sayre, J. T.; Schaffer, K. K.; Shaw, L.; Shirokoff, E.; Šuhada, R.; Spieler, H.; Stanford, S. A.; Staniszewski, Z.; Stark, A. A.; Story, K. T.; Stubbs, C. W.; Engelen, A. van; Vanderlinde, K.; Vieira, J. D.; Williamson, A. R.; Zahn, O.

doi:10.1088/0004-637x/761/1/22

Cited by 106 publications

(126 citation statements)

References 88 publications

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“…Where available, we use the BCGs identified in the Weighing the Giants project (54 clusters; von der Linden et al 2014) or for the SPT survey (18 clusters in common with our sample; Song et al 2012). For the remaining clusters, we query the DR7 and DR10 catalog and imaging databases of the Sloan Digital Sky Survey 15 (SDSS; Abazajian et al 2009, Ahn et al 2014), which provides BCGs for an additional 123 clusters.…”

Section: Comparison With Bcg/x-ray Offsetsmentioning

confidence: 99%

Cosmology and astrophysics from relaxed galaxy clusters – I. Sample selection

Mantz

Allen

Morris

et al. 2015

Monthly Notices of the Royal Astronomical Society

114

204

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This is the first in a series of papers studying the astrophysics and cosmology of massive, dynamically relaxed galaxy clusters. Here we present a new, automated method for identifying relaxed clusters based on their morphologies in X-ray imaging data. While broadly similar to others in the literature, the morphological quantities that we measure are specifically designed to provide a fair basis for comparison across a range of data quality and cluster redshifts, to be robust against missing data due to point-source masks and gaps between detectors, and to avoid strong assumptions about the cosmological background and cluster masses. Based on three morphological indicators -Symmetry, Peakiness and Alignment -we develop the SPA criterion for relaxation. This analysis was applied to a large sample of cluster observations from the Chandra and ROSAT archives. Of the 361 clusters which received the SPA treatment, 57 (16 per cent) were subsequently found to be relaxed according to our criterion. We compare our measurements to similar estimators in the literature, as well as projected ellipticity and other image measures, and comment on trends in the relaxed cluster fraction with redshift, temperature, and survey selection method. Code implementing our morphological analysis will be made available on the web. 1

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Section: Comparison With Bcg/x-ray Offsetsmentioning

confidence: 99%

Cosmology and astrophysics from relaxed galaxy clusters – I. Sample selection

Mantz

Allen

Morris

et al. 2015

Monthly Notices of the Royal Astronomical Society

114

204

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“…After this cut, we were left with a sample of 82 clusters. From this follow-up imaging, we initially select the BCG 27 as the brightest red sequence galaxy within an aperture of R 200 centered on the SZ peak, following Song et al (2012). We then visually inspect each cluster and select a new BCG if one, or both, of two conditions are met: (i) there is a similarly bright galaxy that is significantly closer to the X-ray peak (29% of systems); (ii) there is a bright blue galaxy on or near the X-ray peak that was not selected due to our initial preference for red galaxies (3% of systems).…”

Section: Cluster Sample and Bcg Selectionmentioning

confidence: 99%

“…The acquisition, reduction, and calibration of these data are presented in detail in Song et al (2012) and Bleem et al (2015). Aperture photometry for the BCG was obtained from SExtractor (Bertin & Arnouts 1996), following Song et al (2012) and Bleem et al (2015).…”

Section: Uv-optical-ir Photometry and Spectral Energy Distribution (Smentioning

confidence: 99%

STAR-FORMING BRIGHTEST CLUSTER GALAXIES AT 0.25 < z < 1.25: A TRANSITIONING FUEL SUPPLY

McDonald

Stalder

Bayliss

et al. 2016

ApJ

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We present a multiwavelength study of the 90 brightest cluster galaxies (BCGs) in a sample of galaxy clusters selected via the Sunyaev Zel'dovich effect by the South Pole Telescope, utilizing data from various ground-and space-based facilities. We infer the star-formation rate (SFR) for the BCG in each cluster-based on the UV and IR continuum luminosity, as well as the [O II]λλ3726,3729 emission line luminosity in cases where spectroscopy is available-and find seven systems with SFR > 100 M e yr −1 . We find that the BCG SFR exceeds 10 M e yr −1 in 31 of 90 (34%) cases at 0.25<z<1.25, compared to ∼1%-5% at z∼0 from the literature. At z1, this fraction increases to 92 31 6 -+ %, implying a steady decrease in the BCG SFR over the past ∼9 Gyr. At low-z, we find that the specific SFR in BCGs is declining more slowly with time than for field or cluster galaxies, which is most likely due to the replenishing fuel from the cooling ICM in relaxed, cool core clusters. At z0.6, the correlation between the cluster central entropy and BCG star formation-which is well established at z∼0-is not present. Instead, we find that the most star-forming BCGs at high-z are found in the cores of dynamically unrelaxed clusters. We use data from the Hubble Space Telescope to investigate the rest-frame near-UV morphology of a subsample of the most star-forming BCGs, and find complex, highly asymmetric UV morphologies on scales as large as ∼50-60 kpc. The high fraction of star-forming BCGs hosted in unrelaxed, non-cool core clusters at early times suggests that the dominant mode of fueling star formation in BCGs may have recently transitioned from galaxygalaxy interactions to ICM cooling.

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“…We complemented our analysis of the Planck SZ-cluster catalog using X-ray selected clusters from the Meta Catalog of X-ray Clusters (MCXC; Piffaretti et al 2011); and tSZ selected clusters from the Atacama Cosmological Telescope (ACT; Hincks et al 2010;Hasselfield et al 2013) and the South Pole Telescope (SPT) tSZ catalogs (Chang et al 2009;Song et al 2012;Reichardt et al 2013). Table 1 summarizes the main characteristics of these catalogs.…”

Section: Other Catalogs Of Galaxy Clustersmentioning

confidence: 99%

Measurement of theT_CMBevolution from the Sunyaev-Zel’dovich effect

Hurier¹,

Aghanim²,

Douspis³

et al. 2014

A&A

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In the standard hot cosmological model, the black-body temperature of the cosmic microwave background (CMB), T CMB , increases linearly with redshift. Across the line of sight CMB photons interact with the hot (∼10 7−8 K ) and diffuse gas of electrons from galaxy clusters. This interaction leads to the well-known thermal Sunyaev-Zel'dovich effect (tSZ), which produces a distortion of the black-body emission law, depending on T CMB . Using tSZ data from the Planck satellite, it is possible to constrain T CMB below z = 1. Focusing on the redshift dependance of T CMB , we obtain T CMB (z) = (2.726 ± 0.001) × (1 + z) 1−β K with β = 0.009 ± 0.017, which improves on previous constraints. Combined with measurements of molecular species absorptions, we derive β = 0.006 ± 0.013. These constraints are consistent with the standard (i.e. adiabatic, β = 0) Big-Bang model.

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Redshifts, Sample Purity, and BCG Positions for the Galaxy Cluster Catalog From the First 720 Square Degrees of the South Pole Telescope Survey

Cited by 106 publications

References 88 publications

Cosmology and astrophysics from relaxed galaxy clusters – I. Sample selection

Cosmology and astrophysics from relaxed galaxy clusters – I. Sample selection

STAR-FORMING BRIGHTEST CLUSTER GALAXIES AT 0.25 < z < 1.25: A TRANSITIONING FUEL SUPPLY

Measurement of theT_CMBevolution from the Sunyaev-Zel’dovich effect

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Redshifts, Sample Purity, and BCG Positions for the Galaxy Cluster Catalog From the First 720 Square Degrees of the South Pole Telescope Survey

Cited by 106 publications

References 88 publications

Cosmology and astrophysics from relaxed galaxy clusters – I. Sample selection

Cosmology and astrophysics from relaxed galaxy clusters – I. Sample selection

STAR-FORMING BRIGHTEST CLUSTER GALAXIES AT 0.25 < z < 1.25: A TRANSITIONING FUEL SUPPLY

Measurement of theTCMBevolution from the Sunyaev-Zel’dovich effect

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Measurement of theT_CMBevolution from the Sunyaev-Zel’dovich effect