22 citations · 37 across the 18 of their papers we have counts for
13 papers · 1 filter
Recycled Gas Dominates the Metal-rich Fuel of Supermassive Black Holes
Dongyun Kwak, Ena Choi, Hannah Jhee +5
Understanding the origin and chemical properties of gas accreted by supermassive black holes (SMBHs) is essential for linking black hole growth to galaxy evolution. Using a suite o…
Comparing the Near-infrared Spectral Energy Distributions from Different Stellar Population Synthesis Models with SPHEREx Observations
Jeong Hwan Lee, Minjin Kim, Woong-Seob Jeong +17
While stellar population synthesis (SPS) models have been widely used for spectral analysis in optical wavelengths, their characteristics remain uncertain in the near-infrared (NIR…
A UV-to-Near-infrared QSO Composite Spectrum from the SPHEREx All-Sky Survey
Minjin Kim, Yongjung Kim, Woong-Seob Jeong +19
We present a composite spectrum of type 1 SDSS QSOs (median ), constructed using SPHEREx spectrophotometric data and covering a rest-frame wavelength…
Can BLR line profile shape improve single-epoch black hole mass estimates?
Lizvette Villafaña, Tommaso Treu, Shu Wang +7
The virial coefficient (), which is meant to encapsulate broad-line region (BLR) geometry and kinematics, remains one of the largest sources of systematic uncertainty in black h…
Dynamical Modeling of the Broad-Line Region with High-Mass Active Galactic Nuclei and Constraints on the Virial Factor
Shu Wang, Jong-Hak Woo, Lizvette Villafaña +2
We present the results of broad-line region (BLR) dynamical modeling for eight high-mass active galactic nuclei (AGNs) from the Seoul National University AGN Monitoring Project, by…
BASS. LI. Cool gas supply of HI-massive local Seyfert galaxies
Jeein Kim, Aeree Chung, O. Ivy Wong +19
We present neutral atomic hydrogen (HI) imaging observations of 22 HI-rich (), hard X-ray-selected local Seyferts to explore how cool gas is su…
New black hole mass calibrations and the fundamental plane of the broad-line region size, luminosity, and velocity
Jong-Hak Woo, Jimin Kim, Hojin Cho +1
We present a new calibration of the broad-line region (BLR) size-luminosity-velocity relation using a sample of 157 AGNs with reliable Hbeta time-delay (\lag) measurements from Wan…
Environment and Gas Fraction in Type-2 AGN versus Non-AGN Galaxies
Jyoti Yadav, Jong-Hak Woo, Ashraf Ayubinia
We investigate the environmental parameters and gas fraction (f) properties of type~2 AGN and non-AGN galaxies, utilizing a large sample of galaxies from SDSS DR7 with z $\…
A Modified 3D Biconical Outflow Model: Spatial Constraints on AGN-driven Outflows
Changseok Kim, Jong-Hak Woo
We present a modified outflow model and its application to constrain ionized outflow properties of active galactic nuclei (AGNs). By adding a rotating disk component to the biconic…
A Comparison of Star Formation Rates by Different Tracers in Nearby Galaxies
Huynh Anh N. Le, Jong-Hak Woo, Yongquan Xue +3
We utilize a large sample of 113,000 galaxies () from the Sloan Digital Sky Survey with high-quality data to compare star formation rates (SFRs) across multiple diag…
Central Massive Black Holes Are Not Ubiquitous in Local Low-Mass Galaxies
Fan Zou, Elena Gallo, Anil C. Seth +13
The black-hole occupation fraction () defines the fraction of galaxies that harbor central massive black holes (MBHs), irrespective of their accretion activity leve…
Multi-wavelength properties of 850-m selected sources from the North Ecliptic Pole SCUBA-2 survey
H. Shim, D. Lee, Y. Kim +25
We present the multi-wavelength counterparts of 850-m selected submillimetre sources over a 2-deg field centred on the North Ecliptic Pole. In order to overcome the large be…
Enhancing the H2O Megamaser Detection Rate Using Optical and Mid-infrared Photometry
C. Y. Kuo, A. Constantin, J. A. Braatz +8
Water megamasers from circumnuclear disks in galaxy centers provide the most accurate measurements of supermassive black hole masses and uniquely probe the sub-parsec accretion pro…