69 citations · 479 across the 36 of their papers we have counts for
36 papers
Constructing a Mock Galaxy Catalog for the All-sky SPECtroscopic Survey of Nearby Galaxies (A-SPEC) Using the Machine-assisted Semi-Simulation Model
Dongkok Kim, Yongseok Jo, Ho Seong Hwang +26
We present a methodology for constructing a mock galaxy catalog for the All-sky SPECtroscopic survey of nearby galaxies (A-SPEC) using the Machine-assisted Semi-Simulation Model. T…
Only obscured yet luminous active galactic nuclei are closely associated with galaxy mergers: Direct observational evidence from type 2 active galactic nuclei
Yongmin Yoon, Yongjung Kim, Dohyeong Kim +2
To establish a more comprehensive understanding of the connection between galaxy mergers and active galactic nuclei (AGNs), it is essential to disentangle the contributions of intr…
Black Hole Properties of Type-1 Active Galactic Nuclei in the North Ecliptic Pole Wide Field: I. Mid-infrared Sources with Optical Counterparts
Dohyeong Kim, Myungshin Im, Hyunjin Shim +11
We present measurements of black hole (BH) properties of 861 Type-1 active galactic nuclei (AGNs) in the North Ecliptic Pole (NEP)-Wide field. These AGNs are detected in both optic…
K-DRIFT Science Theme: New Theoretical Framework Using the Galaxy Replacement Technique for LSB studies
Kyungwon Chun, Jihye Shin, Rory Smith +13
Low-surface-brightness (LSB) structures provide critical insights into the hierarchical formation of galaxies and galaxy clusters. The KASI Deep Rolling Imaging Fast Telescope (K-D…
K-DRIFT Science Theme: Galaxies in the Faint Universe
Woowon Byun, Yongmin Yoon, Jongwan Ko +17
Low-surface-brightness (LSB) structures serve as evidence of the intricate mass assembly of galaxies, and dedicatedly studying them promises to give us profound insights into the e…
A New Collision Avoidance Fiber Assignment Algorithm for Robotic Fiber Positioners in Multi-Object Spectroscopy
Minseong Kwon, Ho Seong Hwang, Jong Chul Lee +22
We present a new fiber assignment algorithm for a robotic fiber positioner system in multi-object spectroscopy. Modern fiber positioner systems typically have overlapping patrol re…
K-DRIFT Science Theme: Illuminating the Next Era of Galaxy Cluster Science
Jaewon Yoo, Kyungwon Chun, Jongwan Ko +13
The KASI Deep Rolling Imaging Fast Telescope (K-DRIFT) is a pioneering instrument designed to explore low-surface-brightness (LSB) phenomena. This white paper presents a compelling…
Direct observational evidence that higher-luminosity type 1 active galactic nuclei are most commonly triggered by galaxy mergers
Yongmin Yoon, Yongjung Kim, Dohyeong Kim +2
We examine the connection between galaxy mergers and the triggering of active galactic nuclei (AGNs) using a sample of 614 type 1 AGNs at , along with a control sample of i…
K-DRIFT: Unveiling New Imagery of the Hidden Universe
Jongwan Ko, Woowon Byun, Kwang-Il Seon +31
Low-surface-brightness (LSB) structures play a crucial role in understanding galaxy evolution by providing significant insights into galaxy interactions, the histories of mass asse…
Diverse Rotation Curves of Galaxies in a Simulated Universe: the Observed Dependence on Stellar Mass and Morphology Reproduced
Daeun Jeong, Ho Seong Hwang, Haeun Chung +1
We use the IllustrisTNG cosmological hydrodynamical simulation to study the rotation curves of galaxies in the local universe. To do that, we first select the galaxies with 9.4 …
The Most Massive Early-type Galaxies Exhibit Tidal Features More Frequently in Lower-density Environments
Yongmin Yoon, Jae-Woo Kim, Jongwan Ko
The most massive early-type galaxies (ETGs) are known to form through numerous galaxy mergers. Thus, it is intriguing to study whether their formation in low-density environments,…
Shell-type Tidal Features Are More Frequently Detected in Slowly Rotating Early-type Galaxies than Stream- and Tail-type Features
Yongmin Yoon, Jongwan Ko, Haeun Chung +2
To enhance our understanding of the impact of galaxy mergers on the kinematics of early-type galaxies (ETGs), we examine differences in specific stellar angular momentum within the…
Low-mass Quiescent Galaxies Are Small in Isolated Environments: Environmental Dependence of the Mass-Size Relation of Low-mass Quiescent Galaxies
Yongmin Yoon, Jae-Woo Kim, Jongwan Ko
We study the mass-size relation of quiescent galaxies across various environments, with a particular focus on its environmental dependence at the low-mass part of $\log(M_\mathrm{s…
Cosmological Parameter Constraints from the SDSS Density and Momentum Power Spectra
Stephen Appleby, Motonari Tonegawa, Changbom Park +3
We extract the galaxy density and momentum power spectra from a subset of early-type galaxies in the SDSS DR7 main galaxy catalog. Using galaxy distance information inferred from t…
Impact of Galaxy Mergers on Stellar Population Profiles of Early-type Galaxies
Yongmin Yoon, Jongwan Ko, Jae-Woo Kim
We study the impact of galaxy mergers on stellar population profiles/gradients of early-type galaxies (ETGs) using ETGs at in the Stripe 82 region of the Sloan Digital Sk…
The Fundamental Plane Is Not a Plane: Warped Nature of the Fundamental Plane of Early-type Galaxies and Its Implication for Galaxy Formation
Yongmin Yoon, Changbom Park
Based on early-type galaxies (ETGs) in from Sloan Digital Sky Survey data, we show that the fundamental plane (FP) of ETGs is not a plane…
The Infrared Medium-deep Survey. IX. Discovery of Two New Quasars and Space Density down to mag
Yongjung Kim, Myungshin Im, Yiseul Jeon +17
We present the result of the Infrared Medium-deep Survey (IMS) quasar survey, using the combination of the IMS near-infrared images and the Canada-France-Hawaii Telescope…
Evidence for Impact of Galaxy Mergers on Stellar Kinematics of Early-type Galaxies
Yongmin Yoon, Changbom Park, Haeun Chung +1
We provide observational evidence that galaxy mergers significantly affect stellar kinematics of early-type galaxies (ETGs) such as specific stellar angular momentum within the hal…
Rotation Curves of Galaxies and Their Dependence on Morphology and Stellar Mass
Yongmin Yoon, Changbom Park, Haeun Chung +1
We study how stellar rotation curves (RCs) of galaxies are correlated on average with morphology and stellar mass () using the final release of Sloan Digital Sky S…
Frequency of Tidal Features Correlates with Age and Internal Structure of Early-type Galaxies
Yongmin Yoon, Gu Lim
Previous studies suggest that compact young early-type galaxies (ETGs) were formed by recent mergers. However, it has not yet been revealed whether tidal features that are direct e…
The Infrared Medium-deep Survey. VIII. Quasar Luminosity Function at
Yongjung Kim, Myungshin Im, Yiseul Jeon +27
Faint quasars with mag are known to be the potentially important contributors to the ultraviolet ionizing background in the post-reionization era. Howeve…
Dependence of the Fundamental Plane of Early-type Galaxies on Age and Internal Structure
Yongmin Yoon, Changbom Park
We investigate the scatter in the fundamental plane (FP) of early-type galaxies (ETGs) and its dependence on age and internal structure of ETGs, using ETGs with $M_r\le-19…
Star Formation Enhancement in Barred Disk Galaxies in Interacting Galaxy Clusters
Yongmin Yoon, Myungshin Im
A recent study shows that bars can be induced via interaction of galaxy clusters, but it has been unclear if the bar formation by the interaction between clusters is related to the…
The Infrared Medium-deep Survey. \Romannum{7}. Faint Quasars at in the ELAIS-N1 Field
Suhyun Shin, Myungshin Im, Yongjung Kim +26
The intergalactic medium (IGM) at 5 to 6 is largely ionized, and yet the main source for the IGM ionization in the early universe is uncertain. Of the possible contributors…