Takumi TANAKA

I study Little Red Dots (LRDs), a newly discovered population of compact red sources in the early Universe. My goal is to understand their nature and their connection to the formation and rapid growth of the first supermassive black holes.

Selected publications:
・Tanaka et al., 2026: Discovery of dual LRDs
・Tanaka et al., 2025: A z>10 (most distant) LRD candidate

I investigate how supermassive black holes and their host galaxies grow together across cosmic time, using AGN–host decomposition, spectroscopy, and large extragalactic surveys.

Selected publications:
・Tanaka et al., 2025: JWST statistical census of the SMBH-galaxy mass relation at Cosmic Noon
・Tanaka et al., 2026: Merger-driven buildup of the mass relation

I use rare galaxy populations and data-driven techniques, including machine learning, to uncover unusual or quick evolutionary pathways such as galaxy rejuvenation.

Selected publications:
・Tanaka et al. 2022: Deep anomaly detection using Subaru Hyper Suprime-Cam data
・Tanaka et al., 2024: The nature of rejuvenation galaxies