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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…