319 citations · 1.6k across the 57 of their papers we have counts for
57 papers
Hector Galaxy Survey: Falling in Between - Infalling Galaxies in the Midst of the Abell 3667 Merger
Oğuzhan Çakır, Matt Owers, Gabriella Quattropani +38
Whether cluster mergers enhance ram pressure stripping (RPS) and accelerate member galaxy evolution remains an open question. Here, we investigate galaxy populations in the nearby…
Hector Galaxy Survey: Optical IFU and Chandra Reveal a Low-Luminosity AGN Behind Extended LINER Emission
Kyuseok Oh, Gabriella Quattropani, Pratyush Kumar Das +25
We present evidence that the Hector Galaxy Survey galaxy C901005481609968 (), which exhibits spatially extended LINER-like emission in optical integral-field spe…
Hector Galaxy Survey: Data Processing, Quality Control and Early Science
S. Oh, M. L. P. Gunawardhana, S. M. Croom +52
The Hector Galaxy Survey is a new optical integral field spectroscopy (IFS) survey currently using the AAT to observe up to 15,000 galaxies at low redshift (). The Hector…
Spatially Resolved Star Formation Rate and Dust Attenuation of Nearby Galaxies from CALIFA, GALEX, and WISE Data
Jong Chul Lee, Joon Hyeop Lee, Hyunjin Jeong +2
We study star formation rate (SFR) indicators and dust attenuation of 74 nearby star-forming galaxies on kiloparsec scales, based on GALEX far-ultraviolet (FUV) and WISE mid-infrar…
Impact of Internal Dust Correction on the Stellar Populations of Galaxies Estimated Using the Full Spectrum Fitting
Joon Hyeop Lee, Hyunjin Jeong, Jiwon Chung +2
Full spectrum fitting is a powerful tool for estimating the stellar populations of galaxies, but the fitting results are often significantly influenced by internal dust attenuation…
One-sided H alpha Excess before the First Pericentre Passage in Galaxy Pairs
Jiwon Chung, Joon Hyeop Lee, Hyunjin Jeong
We present novel insights into the interplay between tidal forces and star formation in interacting galaxies before their first pericentre passage. We investigate seven close pair…
The SAMI Galaxy Survey: impact of star formation and AGN feedback processes on the ionized gas velocity dispersion
Sree Oh, Matthew Colless, Stefania Barsanti +12
We investigate the influence of star formation and instantaneous AGN feedback processes on the ionized gas velocity dispersion in a sample of 1285 emission-line galaxies with stell…
Discovery of a large-scale H I plume in the NGC 7194 Group
Mina Pak, Junhyun Baek, Joon Hyeop Lee +5
We present the discovery of a new H I structure in the NGC 7194 group from the observations using the Karl G. Jansky Very Large Array. NGC 7194 group is a nearby (z ~ 0.027) small…
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…
Galaxy Quenching with Mass Growth History of Galaxy Groups and Clusters: The Importance of Post-Processing
So-Myoung Park, Kyungwon Chun, Jihye Shin +5
We investigate the fraction of quenched satellite galaxies in host galaxy groups and clusters using TNG300 in the IllustrisTNG cosmological magnetohydrodynamical simulations. Simul…
Witnessing a Transformation to Blue-cored Dwarf Early-type Galaxies in Filaments and the Cluster Outskirts: Gas-phase Abundances and Internal Kinematics Perspectives
Jiwon Chung, Joon Hyeop Lee, Hyunjin Jeong +1
The presence of transitional dwarf galaxies in filaments and cluster outskirts may be closely related to pre-processing in the filament; however, the underlying mechanism is not ye…
Age-Divided Mean Stellar Populations from Full Spectrum Fitting as the Simplified Star Formation and Chemical Evolution History of a Galaxy: Methodology and Reliability
Joon Hyeop Lee, Mina Pak, Hyunjin Jeong +1
We introduce a practical methodology for investigating the star formation and chemical evolution history of a galaxy: age-divided mean stellar populations (ADPs) from full spectrum…
KMTNet Nearby Galaxy Survey: Overview and a Survey Description
Woowon Byun, Yun-Kyeong Sheen, Kwang-Il Seon +8
Recently, there has been an increasing demand for deep imaging surveys to investigate the history of the mass assembly of galaxies in detail by examining the remnants of mergers an…
The origin of the nuclear star-forming ring in NGC 3182
Mina Pak, Joon Hyeop Lee, Hyunjin Jeong +1
We investigate the stellar and ionized gas kinematics, and stellar populations of NGC3182 galaxy using integral field spectrograph data from the Calar Alto Legacy Integral Field Ar…
Improved AI-generated Solar Farside Magnetograms by STEREO and SDO Data Sets and Their Release
Hyun-Jin Jeong, Yong-Jae Moon, Eunsu Park +2
Here we greatly improve Artificial Intelligence (AI)-generated solar farside magnetograms using data sets of Solar Terrestrial Relations Observatory (STEREO) and Solar Dynamics Obs…
Stellar Populations of Spectroscopically Decomposed Bulge-Disk for S0 Galaxies from the CALIFA survey
Mina Pak, Joon Hyeop Lee, Sree Oh +4
We investigate the stellar population properties of bulges and disks separately for 34 S0s using integral field spectroscopy from the Calar Alto Legacy Integral Field Area survey.…
KMTNet Nearby Galaxy Survey III. Deficient H flux in the Extended Disks of Spiral Galaxies
Woowon Byun, Yun-Kyeong Sheen, Kwang-Il Seon +9
We perform a deep wide-field imaging survey of nearby galaxies using H and broadband filters to investigate the characteristics of star formation in galaxies. Motivated by the f…
The Sami Galaxy Survey: stellar populations of passive spiral galaxies in different environment
Mina Pak, Sree Oh, Joon Hyeop Lee +17
We investigate the stellar populations of passive spiral galaxies as a function of mass and environment, using integral field spectroscopy data from the Sydney-AAO Multi-object Int…
Solar Coronal Magnetic Field Extrapolation from Synchronic Data with AI-generated Farside
Hyun-Jin Jeong, Yong-Jae Moon, Eunsu Park +1
Solar magnetic fields play a key role in understanding the nature of the coronal phenomena. Global coronal magnetic fields are usually extrapolated from photospheric fields, for wh…
Compact elliptical galaxies in different local environments: a mixture of galaxies with different origins?
Suk Kim, Hyunjin Jeong, Soo-Chang Rey +4
We present the stellar populations of 138 compact elliptical galaxies (cEs) in the redshift range of using the Sloan Digital Sky Survey (SDSS) DR12. Our cEs are divided…
KMTNet Nearby Galaxy Survey II. Searching for Dwarf Galaxies in Deep and Wide-field Images of the NGC 1291 system
Woowon Byun, Yun-Kyeong Sheen, Hong Soo Park +11
We present newly discovered dwarf galaxy candidates in deep and wide-field images of NGC 1291 obtained with the Korea Microlensing Telescope Network. We identify 15 dwarf galaxy ca…
Mysterious Coherence in Several-Megaparsec Scales Between Galaxy Rotation and Neighbor Motion
Joon Hyeop Lee, Mina Pak, Hyunmi Song +3
In our recent report, observational evidence supports that the rotational direction of a galaxy tends to be coherent with the average motion of its nearby neighbors within 1 Mpc. W…
Impact of Galaxy Mergers on the Colours of Cluster Galaxies
Sree Oh, Keunho Kim, Joon Hyeop Lee +9
We examine the ultraviolet and optical colours of 906 cluster galaxies from the KASI-Yonsei Deep Imaging Survey of Clusters (KYDISC). Galaxies have been divided into two categories…
Stellar populations of nine passive spiral galaxies from the CALIFA survey: are they progenitors of S0s?
Mina Pak, Joon Hyeop Lee, Hyunjin Jeong +3
We investigate the stellar population properties of passive spiral galaxies in the CALIFA survey. Nine spiral galaxies that have NUV-r > 5 and no/weak nebular emission lines in the…