activity
20242026
collaborators

22 papers

astro-ph.GA2026

Environmental Sculpting of Galaxy Structure at Fixed Stellar Mass: A Multi-Scale Analysis Across Cosmic Time using 3 Million HSC Galaxies

Caitlin Igel, Aritra Ghosh, Andrew J. Connolly +4

The extent to which galaxy structure is shaped by environment beyond the local universe, once stellar mass is controlled, remains an open question in galaxy evolution. We address t…

astro-ph.GA2026

Subaru meets JWST: A Direct Measurement of Ly Escape Fraction at with Dual Narrow-Band Imaging

Shunta Shimizu, Nobunari Kashikawa, Ryo Emori +15

We present a direct measurement of the Ly escape fraction, , for H emitters (HAEs) at in the JWST CEERS field by combining JWST/NIRCam…

astro-ph.GA2026

Strong environmental AGN enhancement among DSFGs in z > 2 protoclusters

Monica Natalia Isla Llave, Fabio Vito, Alberto Traina +17

Galaxy protoclusters (PCs) at z > 2 are dense regions in which cold gas availability and elevated galaxy interaction rates trigger intense, often dust-obscured, star formation. The…

astro-ph.GA2026

There and back again? Neutral outflows in z~3.5 quiescent galaxies

Pengpei Zhu, Kei Ito, Francesco Valentino +16

Neutral gas outflows play a crucial role in the baryon cycle of galaxies, their properties provide key insights into the transition from star formation to quiescence. In this work,…

astro-ph.GA2026

Spider-Webb: enhanced star formation in low-mass galaxies within the Spiderweb protocluster revealed by JWST Pa narrow-band imaging

Kazuki Daikuhara, Tadayuki Kodama, Yusei Koyama +10

Understanding the role of the environment in galaxy evolution is key to revealing the physical processes that regulate galaxy growth. We study the star formation activity of \pab\…

astro-ph.GA2026

DeepDive: Simultaneous Formation of Massive Quiescent Galaxies in High-Redshift Galaxy Proto-clusters

Takumi Kakimoto, Masayuki Tanaka, Kei Ito +19

We report on the spectroscopic confirmation of overdense regions of massive quiescent galaxies (QGs) in the early Universe with JWST/NIRSpec. Based on data from the DeepDive NIRSpe…