Phriksee , A , Jullo , E , Limousin , M , Shan , H , Finoguenov , A , Komonjinda , S , Wannawichian , S & Sawangwit , U 2020 , ' Weak lensing analysis of CODEX clusters using dark energy camera legacy survey : mass-richness relation ' , Monthly Notices of the Royal Astronomical Society , vol. 491 , no. 2 , pp. 1643-1655 . https://doi.org/10.1093/mnras/stz3049
Title: | Weak lensing analysis of CODEX clusters using dark energy camera legacy survey : mass-richness relation |
Author: | Phriksee, Anirut; Jullo, Eric; Limousin, Marceau; Shan, HuanYuan; Finoguenov, Alexis; Komonjinda, Siramas; Wannawichian, Suwicha; Sawangwit, Utane |
Contributor organization: | Department of Physics |
Date: | 2020-01 |
Language: | eng |
Number of pages: | 13 |
Belongs to series: | Monthly Notices of the Royal Astronomical Society |
ISSN: | 0035-8711 |
DOI: | https://doi.org/10.1093/mnras/stz3049 |
URI: | http://hdl.handle.net/10138/312446 |
Abstract: | We present the weak-lensing analysis of 279 CODEX clusters using imaging data from 4200 deg(2) of the DECam Legacy Survey (DECaLS) Data Release 3. The cluster sample results from a joint selection in X-ray, optical richness in the range 20 proportional to M-0 (lambda/40)(F lambda). By measuring the CODEX cluster sample as an individual cluster, we obtain the best-fitting values, M-0 = 3.24(-0.27)(+0.29) x 10(14)M(circle dot), and F-lambda = 1.00(-0.22)(+0.22) for the richness scaling index, consistent with a power-law relation. Moreover, we separate the cluster sample into three richness groups; lambda = 20-30, 30-50, and 50-110, and measure the stacked excess surface mass density profile in each group. The results show that both methods are consistent. In addition, we find an excellent agreement between our weak lensing based scaling relation and the relation obtained with dynamical masses estimated from cluster member velocity dispersions measured by the SDSS-IV/SPIDERS team. This suggests that the cluster dynamical equilibrium assumption involved in the dynamical mass estimates is statistically robust for a large sample of clusters. |
Subject: |
gravitational lensing: weak
galaxy: clusters: general large-scale structure of Universe HALO-MASS SCALING RELATIONS PEAK STATISTICS GALAXY CLUSTERS MATTER HALOES CALIBRATION CONSTRAINTS PRECISION PROFILES COVARIANCE 115 Astronomy, Space science |
Peer reviewed: | Yes |
Rights: | cc_by_nc_sa |
Usage restriction: | openAccess |
Self-archived version: | publishedVersion |
Total number of downloads: Loading...
Files | Size | Format | View |
---|---|---|---|
stz3049.pdf | 2.254Mb |
View/ |