2018MNRAS.474.2635S

Query : 2018MNRAS.474.2635S

2018MNRAS.474.2635S - Mon. Not. R. Astron. Soc., 474, 2635-2678 (2018/February-3)

Cluster mass calibration at high redshift: HST weak lensing analysis of 13 distant galaxy clusters from the South Pole Telescope Sunyaev-Zel'dovich Survey.

SCHRABBACK T., APPLEGATE D., DIETRICH J.P., HOEKSTRA H., BOCQUET S., GONZALEZ A.H., VON DER LINDEN A., McDONALD M., MORRISON C.B., RAIHAN S.F., ALLEN S.W., BAYLISS M., BENSON B.A., BLEEM L.E., CHIU I., DESAI S., FOLEY R.J., DE HAAN T., HIGH F.W., HILBERT S., MANTZ A.B., MASSEY R., MOHR J., REICHARDT C.L., SARO A., SIMON P., STERN C., STUBBS C.W. and ZENTENO A.

Abstract (from CDS):

We present an HST/Advanced Camera for Surveys (ACS) weak gravitational lensing analysis of 13 massive high-redshift (z_median = 0.88) galaxy clusters discovered in the South Pole Telescope (SPT) Sunyaev-Zel'dovich Survey. This study is part of a larger campaign that aims to robustly calibrate mass-observable scaling relations over a wide range in redshift to enable improved cosmological constraints from the SPT cluster sample. We introduce new strategies to ensure that systematics in the lensing analysis do not degrade constraints on cluster scaling relations significantly. First, we efficiently remove cluster members from the source sample by selecting very blue galaxies in V - I colour. Our estimate of the source redshift distribution is based on Cosmic Assembly Near-infrared Deep Extragalactic Legacy Survey (CANDELS) data, where we carefully mimic the source selection criteria of the cluster fields. We apply a statistical correction for systematic photometric redshift errors as derived from Hubble Ultra Deep Field data and verified through spatial cross-correlations. We account for the impact of lensing magnification on the source redshift distribution, finding that this is particularly relevant for shallower surveys. Finally, we account for biases in the mass modelling caused by miscentring and uncertainties in the concentration-mass relation using simulations. In combination with temperature estimates from Chandrawe constrain the normalization of the mass-temperature scaling relation ln (E(z)M_500c/10¹⁴ M_☉) = A + 1.5ln (kT/7.2 keV) to A=1.81^+0.24_–0.14(stat.)±0.09(sys.), consistent with self-similar redshift evolution when compared to lower redshift samples. Additionally, the lensing data constrain the average concentration of the clusters to c_200c=5.6^+3.7_–1.8.

Journal keyword(s): gravitational lensing: weak - galaxies: clusters: general - cosmology: observations

Simbad objects: 19

Full paper

View the references in ADS

Number of rows : 19

N	Identifier	Otype	ICRS (J2000) RA	ICRS (J2000) DEC	Sp type	#ref 1850 - 2026	#notes
1	ACT-CL J0000.9-5748	ClG	00 01 00	-57 48.5	~	57	0
2	ACT-CL J0102-4915	ClG	01 02 52.50	-49 14 58.0	~	296	0
3	ACT-CL J0205.7-5829	ClG	02 05 46.5	-58 29 08	~	54	0
4	NAME GOODS Southern Field	reg	03 32 28.0	-27 48 30	~	1623	1
5	NAME Hubble Ultra Deep Field	reg	03 32 39.0	-27 47 29	~	1900	0
6	SPT-CL J0533-5005	ClG	05 33 37	-50 05.8	~	37	0
7	ACT-CL J0539.9-5744	ClG	05 39 59.538	-57 44 37.28	~	20	0
8	ACT-CL J0546.6-5345	ClG	05 46 37.6557	-53 45 33.242	~	98	0
9	ACT-CL J0559.7-5249	ClG	05 59 43.20	-52 49 27.1	~	63	0
10	ACT-CL J0615.8-5746	ClG	06 15 50.8888	-57 46 36.826	~	80	0
11	NAME COSMOS Field	reg	10 00 28.60	+02 12 21.0	~	3639	0
12	NAME GOODS-N Field	reg	12 36 55.0	+62 14 15	~	1364	1
13	ACT-CL J2040.2-5725	ClG	20 40 13.2	-57 25 18	~	19	0
14	ACT-CL J2106.0-5844	ClG	21 06 04.3	-58 44 32	~	103	0
15	PSZSPT J2331-5052	ClG	23 31 51	-50 51.9	~	53	0
16	ACT-CL J2337.4-5942	ClG	23 37 24.2	-59 42 17	~	52	0
17	ACT-CL J2341.2-5119	ClG	23 41 12.3	-51 19 43	~	52	0
18	ACT-CL J2342.7-5411	ClG	23 42 45.6153	-54 11 11.527	~	44	0
19	ACT-CL J2359.7-5010	ClG	23 59 44	-50 10.2	~	38	0

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