activity
20082026
most citedBeyond halo mass: quenching galaxy mass assembly at the edge of filaments

45 citations · 426 across the 43 of their papers we have counts for

collaborators
Showing astro-ph.GAShow all

29 papers · 1 filter

astro-ph.GA2026

ODIN: Rest-frame Optical Morphologies and Star Formation Activity of Lyα Emitters at z=2.4, 3.1, and 4.5

Sang Hyeok Im, Ho Seong Hwang, Jeong Hwan Lee +19

We analyze the rest-frame optical (~8000 Å) morphologies and star formation activity of Lyα emitters (LAEs) at redshifts , , and , identified in the ODIN survey. To…

astro-ph.GA2026★ 1 cited

ODIN: Clustering Properties of Ly Blobs at 2.4 and 3.1

Byeongha Moon, Yujin Yang, Eric Gawiser +18

Spatially extended Ly nebulae, known as Ly blobs (LABs), are a rare population at that are thought to trace proto-groups or the progenitors of massive galaxies in the…

astro-ph.GA2025

Effect of local environment on Ly line profile in DESI/ODIN LAEs

Ana Sofía M. Uzsoy, Arjun Dey, Anand Raichoor +51

Lyman-Alpha Emitters (LAEs) are star-forming galaxies with significant Ly emission and are often used as tracers of large-scale structure at high redshift. We explore the relati…

astro-ph.GA2025

ODIN: Characterizing the Three-dimensional Structure of Two Protocluster Complexes at

Vandana Ramakrishnan, Ashley Ortiz, Byeongha Moon +52

We present a detailed study of the 3D morphology of two extended associations of multiple protoclusters at . These protocluster 'complexes', designated COSMOS-z3.1-A and COS…

astro-ph.GA2025

ODIN: Star Formation Histories Reveal Formative Starbursts Experienced by Lyman Alpha Emitting Galaxies at Cosmic Noon

Nicole M. Firestone, Eric Gawiser, Kartheik G. Iyer +27

In this work, we test the frequent assumption that Lyman Alpha Emitting galaxies (LAEs) are experiencing their first major burst of star formation at the time of observation. To th…

astro-ph.GA2024★ 5 cited

Quenching of Galaxies at Cosmic Noon: Understanding the Effect of Environment

Akriti Singh, Lucia Guaita, Pascale Hibon +16

The aim of this study is to identify quiescent galaxies in the 2-deg COSMOS field at and analyze their environment. Using data from the ODIN survey and COSMOS2020…

astro-ph.GA2024

ODIN: Strong Clustering of Protoclusters at Cosmic Noon

Vandana Ramakrishnan, Kyoung-Soo Lee, Nicole Firestone +15

The One-hundred-deg DECam Imaging in Narrowbands (ODIN) survey is carrying out a systematic search for protoclusters during Cosmic Noon, using Ly-emitting galaxies (LAEs) as…

astro-ph.GA2024★ 7 cited

Galaxy populations in protoclusters at cosmic noon

Moira Andrews, M. Celeste Artale, Ankit Kumar +20

We investigate the physical properties and redshift evolution of simulated galaxies residing in protoclusters at cosmic noon, to understand the influence of the environment on gala…

astro-ph.GA2024

Testing Lyman Alpha Emitters and Lyman-Break Galaxies as Tracers of Large-Scale Structures at High Redshifts

Sang Hyeok Im, Ho Seong Hwang, Jaehong Park +21

We test whether Lyman alpha emitters (LAEs) and Lyman-break galaxies (LBGs) can be good tracers of high-z large-scale structures, using the Horizon Run 5 cosmological hydrodynamica…

astro-ph.GA2024★ 1 cited

ODIN: Identifying Protoclusters and Cosmic Filaments Traced by Ly-emitting Galaxies

Vandana Ramakrishnan, Kyoung-Soo Lee, Maria Celeste Artale +22

To understand the formation and evolution of massive cosmic structures, studying them at high redshift, in the epoch when they formed the majority of their mass is essential. The O…

astro-ph.GA2024★ 12 cited

A Deep Redshift Survey of the Perseus Cluster: Spatial Distribution and Kinematics of Galaxies

Wooseok Kang, Ho Seong Hwang, Hyunmi Song +3

We study the global kinematics of the Perseus galaxy cluster (Abell 426) at redshift z = 0.017 using a large sample of galaxies from our new MMT/Hectospec spectroscopic observation…

astro-ph.GA2024

Understanding the Formation and Evolution of Dark Galaxies in a Simulated Universe

Gain Lee, Ho Seong Hwang, Jaehyun Lee +2

We study the formation and evolution of dark galaxies using the IllustrisTNG cosmological hydrodynamical simulation. We first identify dark galaxies with stellar-to-total mass rati…

astro-ph.GA2023★ 15 cited

ODIN: Improved Narrowband Ly Emitter Selection Techniques for = 2.4, 3.1, and 4.5

Nicole M. Firestone, Eric Gawiser, Vandana Ramakrishnan +25

Lyman-Alpha Emitting galaxies (LAEs) are typically young, low-mass, star-forming galaxies with little extinction from interstellar dust. Their low dust attenuation allows their Ly$…

astro-ph.GA2023★ 15 cited

Estimators of Bolometric Luminosity and Black Hole Mass with Mid-infrared Continuum Luminosities for Dust-obscured Quasars: Prevalence of Dust-obscured SDSS Quasars

Dohyeong Kim, Myungshin Im, Minjin Kim +4

We present bolometric luminosity () and black hole (BH) mass () estimators based on mid-infrared (MIR) continuum luminosity (hereafter, ) that…

astro-ph.GA2023

The One-hundred-deg^2 DECam Imaging in Narrowbands (ODIN): Survey Design and Science Goals

Kyoung-Soo Lee, Eric Gawiser, Changbom Park +39

We describe the survey design and science goals for ODIN (One-hundred-deg^2 DECam Imaging in Narrowbands), a NOIRLab survey using the Dark Energy Camera (DECam) to obtain deep (AB~…

astro-ph.GA2023

Photometric Selection of Unobscured QSOs in the Ecliptic Poles: KMTNet in the South Field and Pan-STARRS in the North Field

Woowon Byun, Minjin Kim, Yun-Kyeong Sheen +18

We search for quasi-stellar objects (QSOs) in a wide area of the south ecliptic pole (SEP) field, which has been and will continue to be intensively explored through various space…

astro-ph.GA2022★ 6 cited

Metallicity-PAH Relation of MIR-selected Star-forming Galaxies in AKARI North Ecliptic Pole-wide Survey

Hyunjin Shim, Ho Seong Hwang, Woong-Seob Jeong +9

We investigate the variation in the mid-infrared spectral energy distributions of 373 low-redshift () star-forming galaxies, which reflects a variety of polycyclic aromatic…

astro-ph.GA2022★ 18 cited

Spatial distribution of dark matter in and around galaxy clusters traced by galaxies, gas and intracluster stars in a simulated universe

Jihye Shin, Jong Chul Lee, Ho Seong Hwang +5

To understand how well galaxies, gas and intracluster stars trace dark matter in and around galaxy clusters, we use the IllustrisTNG cosmological hydrodynamical simulation and comp…

astro-ph.GA2022★ 4 cited

Is Abell 2261 a fossil galaxy cluster in a transitional dynamical state?

Hyowon Kim, Jongwan Ko, Rory Smith +5

Abell 2261 (A2661) is a well-studied fossil cluster, but previous studies give contradictory results on its dynamical states, such as its X-ray central entropy and magnitude gap. T…

astro-ph.GA2021★ 16 cited

Ly-alpha Radiative Transfer: A Stokes Vector Approach to Ly-alpha Polarization

Kwang-Il Seon, Hyunmi Song, Seok-Jun Chang

Ly-alpha emitting galaxies and giant Ly-alpha blobs (LABs) have been extensively observed to study the formation history of galaxies. However, the origin of their extended Ly-alpha…

astro-ph.GA2021★ 35 cited

Crucial Factors for Lyα Transmission in the Reionizing Intergalactic Medium: Infall Motion, HII Bubble Size, and Self-shielded Systems

Hyunbae Park, Intae Jung, Hyunmi Song +7

Using the CoDa II simulation, we study the Ly transmissivity of the intergalactic medium (IGM) during reionization. At , a typical galaxy without an active galactic nucleus…

astro-ph.GA2021★ 14 cited

Searching for MgII absorbers in and around galaxy clusters

Jong Chul Lee, Ho Seong Hwang, Hyunmi Song

To study environmental effects on the circumgalactic medium (CGM), we use the samples of redMaPPer galaxy clusters, background quasars and cluster galaxies from the SDSS. With ~82…

astro-ph.GA2020★ 45 cited

Beyond halo mass: quenching galaxy mass assembly at the edge of filaments

Hyunmi Song, Clotilde Laigle, Ho Seong Hwang +6

We examine how the mass assembly of central galaxies depends on their location in the cosmic web. The HORIZON-AGN simulation is analysed at z~2 using the DISPERSE code to extract m…

astro-ph.GA2020★ 23 cited

Lyman-alpha radiative transfer: Modeling spectrum and surface brightness profile of Lyman-alpha emitting galaxies at z=3-6

Hyunmi Song, Kwang-Il Seon, Ho Seong Hwang

We perform Lyman-alpha radiative transfer calculations for reproducing Lyman-alpha properties of star-forming galaxies at high redshifts. We model a galaxy as a halo in which the d…