GEM (Galaxy Evolution Meeting) is a research group studying galaxy evolution, located at Yonsei University. Our research focuses on understanding how galaxies form and evolve over cosmic time. We use observational data from various telescopes and theoretical simulations to investigate galaxy properties, star formation, active galactic nuclei (AGN), and environmental effects on galaxy evolution. Our goal is to contribute to a comprehensive picture of the universe's structure and its evolution.

GEM (은하 진화 모임)은 연세대학교에 위치한 은하 진화를 연구하는 연구 그룹입니다. 저희 연구는 우주 시간 동안 은하가 어떻게 형성되고 진화하는지 이해하는 데 중점을 둡니다. 우리는 다양한 망원경의 관측 데이터와 이론적 시뮬레이션을 사용하여 은하 특성, 별 형성, 활동성 은하핵 (AGN), 그리고 은하 진화에 대한 환경적 영향을 조사합니다. 우리의 목표는 우주의 구조와 그 진화에 대한 포괄적인 그림을 그리는 데 기여하는 것입니다.

The Calibration and Data Products of GALEX

Y 2 Isochrones with an Improved Core Overshoot Treatment

Toward Better Age Estimates for Stellar Populations: The Y 2 Isochrones for Solar Mixture

The GALEX Ultraviolet Atlas of Nearby Galaxies

Observational evidence for AGN feedback in early-type galaxies

The green valley is a red herring: Galaxy Zoo reveals two evolutionary pathways towards quenching of star formation in early- and late-type galaxies★

Star Formation in NGC 5194 (M51a): The Panchromatic View fromGALEXtoSpitzer

The UV‐Optical Galaxy Color‐Magnitude Diagram. I. Basic Properties

The Y 2 Isochrones for α‐Element Enhanced Mixtures

A Search for Extended Ultraviolet Disk (XUV‐Disk) Galaxies in the Local Universe

UV‐Optical Colors as Probes of Early‐Type Galaxy Evolution

The SAURON project - XVI. On the sources of ionization for the gas in elliptical and lenticular galaxies

The UV‐Optical Galaxy Color‐Magnitude Diagram. III. Constraints on Evolution from the Blue to the Red Sequence

The Multiwavelength Survey by Yale‐Chile (MUSYC): Survey Design and Deep Public UBVRI z ′ Images and Catalogs of the Extended Hubble Deep Field–South

Introducing the NEWHORIZON simulation: Galaxy properties with resolved internal dynamics across cosmic time

The Effect of Environment on the Ultraviolet Color‐Magnitude Relation of Early‐Type Galaxies

Super-Helium-rich Populations and the Origin of Extreme Horizontal-Branch Stars in Globular Clusters

The correlation of star formation quenching with internal galaxy properties and environment

Galaxy Zoo: a sample of blue early-type galaxies at low redshift

The Space Density and Colors of Massive Galaxies at 2 &lt; z &lt; 3: The Predominance of Distant Red Galaxies

Dust plays a pivotal role in shaping the observed morphology of galaxies. While traditional cosmological simulations often assume a fixed dust-to-gas (DTG) or dust-to-metal (DTM) mass ratio to model dust effects, recent advancements have enabled on-the-fly (OTF) dust modeling that captures the spatial and temporal evolution of dust. In this work, we investigate the impact of dust modeling on galaxy morphology using the NewCluster simulation, which implements a detailed OTF dust model. We generate mock images of NewCluster galaxies under both OTF and fixed DTM models using the radiative transfer code SKIRT, and compare their morphology to JWST observations. We measure morphology indices and use the Gini-M20 test to classify galaxies. We find that the OTF galaxy models exhibit brighter centers and more pronounced bulges than those of the fixed DTM models, resulting in a lower late-type galaxy (LTG) fraction, particularly at high redshifts. This central brightening is linked to a phenomenon we refer to as the DTM cavity, a localized depression in the DTM ratio driven by intense bulge starbursts. Our results highlight the importance of modeling dust evolution in a physically motivated manner, as fixed DTM models fail to capture key morphological features.

How dust models shape high-z galaxy morphology: Insights from the NewCluster simulation

Galaxy Evolution Meeting (GEM) Group

교수님 소개

이석영

연구실 소개

연구실 키워드

알럼나이가 간 회사

연구실 지원 방법

대우 조건

연도별 논문 인용수

저널 & 학회 논문 출판 수

연구실 논문 목록

The Role of Environment in the Evolution of Passive Galaxies

Star Formation Quenching in High-Redshift Galaxies

AGN Feedback and Galaxy Growth

연구실 보유 특허

대학별 입시끈

우리 연구실 모집