2021MNRAS.502.4435A

Query : 2021MNRAS.502.4435A

2021MNRAS.502.4435A - Mon. Not. R. Astron. Soc., 502, 4435-4456 (2021/April-2)

The WaZP galaxy cluster sample of the dark energy survey year 1.

AGUENA M., BENOIST C., DA COSTA L.N., OGANDO R.L.C., GSCHWEND J., SAMPAIO-SANTOS H.B., LIMA M., MAIA M.A.G., ALLAM S., AVILA S., BACON D., BERTIN E., BHARGAVA S., BROOKS D., CARNERO ROSELL A., CARRASCO KIND M., CARRETERO J., COSTANZI M., DE VICENTE J., DESAI S., DIEHL H.T., DOEL P., EVERETT S., EVRARD A.E., FERRERO I., FERTE A., FLAUGHER B., FOSALBA P., FRIEMAN J., GARCIA-BELLIDO J., GILES P., GRUENDL R.A., GUTIERREZ G., HINTON S.R., HOLLOWOOD D.L., HONSCHEID K., JAMES D.J., JELTEMA T., KUEHN K., KUROPATKIN N., LAHAV O., MELCHIOR P., MIQUEL R., MORGAN R., PALMESE A., PAZ-CHINCHON F., PLAZAS A.A., ROMER A.K., SANCHEZ E., SANTIAGO B., SCHUBNELL M., SERRANO S., SEVILLA-NOARBE I., SMITH M., SOARES-SANTOS M., SUCHYTA E., TARLE G., TO C., TUCKER D.L. and WILKINSON R.D.

Abstract (from CDS):

We present a new (2+1)D galaxy cluster finder based on photometric redshifts called Wavelet Z Photometric (WAZP) applied to DES first year (Y1A1) data. The results are compared to clusters detected by the South Pole Telescope (SPT) survey and the redMaPPer cluster finder, the latter based on the same photometric data. WAZP searches for clusters in wavelet-based density maps of galaxies selected in photometric redshift space without any assumption on the cluster galaxy populations. The comparison to other cluster samples was performed with a matching algorithm based on angular proximity and redshift difference of the clusters. It led to the development of a new approach to match two optical cluster samples, following an iterative approach to minimize incorrect associations. The WAZP cluster finder applied to DES Y1A1 galaxy survey (1511.13 deg2 up to mi = 23 mag) led to the detection of 60 547 galaxy clusters with redshifts 0.05 < z < 0.9 and richness Ngals >= 5. Considering the overlapping regions and redshift ranges between the DES Y1A1 and SPT cluster surveys, all SZ based SPT clusters are recovered by the WAZP sample. The comparison between WAZP and redMaPPer cluster samples showed an excellent overall agreement for clusters with richness Ngals (λ for redMaPPer) greater than 25 (20), with 95 per cent recovery on both directions. Based on the cluster cross-match, we explore the relative fragmentation of the two cluster samples and investigate the possible signatures of unmatched clusters.

Abstract Copyright: © 2021 The Author(s) Published by Oxford University Press on behalf of Royal Astronomical Society

Journal keyword(s): methods: data analysis - surveys - galaxies: clusters: general - galaxies: distances and redshifts

Simbad objects: 1

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Number of rows : 1
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 ACT-CL J2218.1-5532 ClG 22 18 10.1 -55 32 48           ~ 5 0

Query : 2021MNRAS.502.4435A

Basic data :
ACT-CL J2218.1-5532 -- Cluster of Galaxies
Other object types: otypes_help 		ClG (2015ApJS,ACT,...)
ICRS coord. (ep=J2000) : 		22 18 10.1 -55 32 48 (Radio) [ ] E 2015ApJS..216...27B
FK4 coord. (ep=B1950 eq=1950) : 		22 14 53.6 -55 47 51 [ ]
Gal coord. (ep=J2000) : 		336.3559 -50.4469 [ ]
Radial velocity / Redshift / cz : 		V(km/s) 154716 [23983] / z(photometric) 0.770 [0.080] / cz 230840 [23983]
   E 2019ApJ...878...55B
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ACT-CL J2218.1-5532 SPT-CL J2218-5532

References (5 between 1850 and 2026) (Total 5)
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