2025 天文年會 (ASROC Annual Meeting)

Observable-to-mass-and-redshift relations of galaxy clusters in RASS-MCMF and ACT-DR5 MCMF with weak lensing shear measurements from HSC

Not scheduled

15m

International Conference Hall 圓形國際會議廳 (College of Management, National Formosa University 國立虎尾科技大學第三校區文理暨管理大樓)

Board: 43

Either Poster-EA

Speaker

I-HSUAN LI (National Cheng Kung University)

Description

We present weak lensing shear measurements of two ICM-selected galaxy cluster samples. The cluster samples, RASS-MCMF and ACT-DR5 MCMF, are selected by applying the Multi-Component Matched Filter (MCMF) algorithm to the second ROSAT All-Sky-Survey (RASS) source catalog (2RXS) and the ACT-DR5 dataset, respectively. For the RASS-MCMF catalog, 171 out of 8449 clusters within the redshift range $0.1 \leq z < 0.75$ are covered by the Hyper Suprime-Cam (HSC) survey, enabling weak lensing shear measurements. In the ACT-DR5 MCMF catalog, 273 out of 6237 clusters within $0.1 \leq z < 1.7$ are covered in the same HSC field. Using the measured shear profiles of these clusters, we further model the observable-to-mass-and-redshift relations.