activity
20232026
collaborators

6 papers

astro-ph.CO2026

Weak-lensing Shear-Selected Galaxy Clusters from the Hyper Suprime-Cam Subaru Strategic Program: III. A precision cosmological sample enabled by optical confirmation

I-Non Chiu, Kai-Feng Chen, Masamune Oguri +9

We develop fCAMIRA (forced-mode CAMIRA), a tool for optical cluster confirmation, and apply it to a sample of 129 weak-lensing (WL) shear-selected galaxy clusters identified in ape…

astro-ph.CO2026

XMM-Newton observations of ten high-redshift CAMIRA clusters of galaxies

Naomi Ota, Ikuyuki Mitsuishi, Nobuhiro Okabe +9

We present results from XMM-Newton observations of ten high-redshift () galaxy clusters selected from the CAMIRA catalog based on high richness (). These m…

astro-ph.CO2025

Catalogs of optically-selected clusters and photometric luminous red galaxies from the Hyper Suprime-Cam Subaru Strategic Program final year dataset

Masamune Oguri, Yen-Ting Lin, Nobuhiro Okabe +9

We construct samples of optically-selected clusters and photometric luminous red galaxies (LRGs) from the Hyper Suprime-Cam Subaru Strategic Program final year dataset covering $\s…

astro-ph.GA2025

Merger fraction in galaxy groups and clusters at z < 0.2: A non-parametric morphological study with Subaru Hyper Suprime-Cam

Anri Yanagawa, Yoshiki Toba, Naomi Ota +7

We investigate the environmental dependence of galaxy mergers using high-resolution imaging data from the Hyper Suprime-Cam (HSC) Subaru Strategic Program. We focus on galaxy group…

astro-ph.GA2024

AGN properties of ~1 million member galaxies of galaxy groups and clusters at z < 1.4 based on the Subaru Hyper Suprime-Cam survey

Yoshiki Toba, Aoi Hashiguchi, Naomi Ota +17

Herein, we present the statistical properties of active galactic nuclei (AGNs) for approximately 1 million member galaxies of galaxy groups and clusters, with 0.1 cluster redsh…

astro-ph.GA2023

MMT/Binospec Spectroscopic Survey of Two 0.8 Galaxy Clusters in the Eye of Horus Field

Jiyun Di, Eiichi Egami, Kenneth C. Wong +4

The discovery of the Eye of Horus (EoH), a rare double source-plane lens system ( 0.795; 1.302 and 1.988), has also led to the identification of two h…