455 citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Seoul National UniversityKR86 papers
- Korea Astronomy and Space Science InstituteKR24 papers
- Institute for Basic ScienceKR16 papers
- Princeton UniversityUS11 papers
- Korea Institute for Advanced StudyKR8 papers
- Center for Theoretical PhysicsPL7 papers
- University of California, IrvineUS7 papers
- Yonsei UniversityKR7 papers
- Institute of Astronomy and Astrophysics, Academia SinicaTW6 papers
- Institute of Space and Astronautical ScienceJP5 papers
- Japan Aerospace Exploration AgencyJP5 papers
- Jet Propulsion LaboratoryUS5 papers
20 papers · 1 filter
The Splashback Mass Function in the Presence of Massive Neutrinos
Suho Ryu, Jounghun Lee
We present a complementary methodology to constrain the total neutrino mass, , based on the diffusion coefficient of the splashback mass function of dark matter halos. An…
Detection of the Mass-Dependent Dual-Type Transition of Galaxy Spins in IllustrisTNG Simulations
Jounghun Lee, Jun-Sung Moon, Suho Ryu +1
A numerical detection of the mass-dependent spin transition of the galaxies is presented. Analyzing a sample of the galaxies with stellar masses in the range of $10^{9}< (M_{\star}…
The Diffusion Coefficient of the Splashback Mass Function as a Probe of Cosmology
Suho Ryu, Jounghun Lee
We present an analytic model for the splashback mass function of dark matter halos, which is parameterized by a single coefficient and constructed in the framework of the generaliz…
Breaking the Dark Degeneracy with the Drifting Coefficient of the Field Cluster Mass Function
Suho Ryu, Jounghun Lee, Marco Baldi
We present a numerical analysis supporting the evidence that the redshift evolution of the drifting coefficient of the field cluster mass function is capable of breaking several co…
The Halo Spin Transition as a Probe of Dark Energy
Jounghun Lee, Noam I Libeskind
We present a numerical evidence supporting the claim that the mass-dependent transitions of the halo spin orientations from the intermediate to the minor principal directions of th…
Evolution of the Deterministic Collapse Barrier of the Field Clusters as a Probe of Cosmology
Suho Ryu, Jounghun Lee
The collapse barrier, , of the field clusters located in the low-density environment is deterministic rather than diffusive, unlike that of the wall counterparts located in…
How the Coherent Tides Obstruct the Radial Infalls of Satellite Galaxies onto Clusters
Jounghun Lee
A direct numerical evidence for the obstructing effect of the coherent tides on the infall-zone satellites around the cluster halos is presented. Analyzing the numerical data from…
Turning Around along the Cosmic Web
Jounghun Lee, Gustavo Yepes
A bound-violation designates a case that the turn-around radius of a bound object exceeds the upper limit put by the spherical collapse model based on the standard CDM paradigm.…
AKARI Observation of the Sub-degree Scale Fluctuation of the Near-infrared Background
H. J. Seo, Hyung Mok Lee, T. Matsumoto +3
We report spatial fluctuation analysis of the sky brightness in near-infrared from observations toward the north ecliptic pole (NEP) by the AKARI at 2.4 and 3.2 micron. As a follow…
A New Dynamical Mass Measurement for the Virgo Cluster using the Radial Velocity Profile of the Filament Galaxies
Jounghun Lee, Suk Kim, Soo-Chang Rey
The radial velocities of the galaxies in the vicinity of a cluster shows deviation from the pure Hubble flow due to their gravitational interaction with the cluster. According to a…
An observational signal of the void shape correlation and its link to the cosmic web
Jounghun Lee, Fiona Hoyle
The shapes of cosmic voids are prone to distortions by the external tidal forces since their low-densities imply a lower internal resistance. This susceptibility of the void shapes…
Detection of the velocity shear effect on the spatial distributions of the galactic satellites in isolated systems
Jounghun Lee, Yun-Young Choi
We report a detection of the effect of the large-scale velocity shear on the spatial distributions of the galactic satellites around the isolated hosts. Identifying the isolated ga…
The Extended Zel'dovich Mass Functions of Clusters and Isolated Clusters in the Presence of Primordial Non-Gaussianity
Seunghwan Lim, Jounghun Lee
We present new formulae for the mass functions of the clusters and the isolated clusters with non Gaussian initial conditions. For this study, we adopt the Extended Zel'dovich (EZL…
Shock Waves and Cosmic Ray Acceleration in the Outskirts of Galaxy Clusters
Sungwook E. Hong, Dongsu Ryu, Hyesung Kang +1
The outskirts of galaxy clusters are continuously disturbed by mergers and gas infall along filaments, which in turn induce turbulent flow motions and shock waves. We examine the p…
The 3.3 micron PAH Emission as a Star Formation Rate Indicator
Ji Hoon Kim, Myungshin Im, Hyung Mok Lee +13
Polycyclic Aromatic Hydrocarbon (PAH) emission features dominate the mid-infrared spectra of star-forming galaxies and can be useful to calibrate star formation rates and diagnose…
Optical Images and Source Catalog of AKARI North Ecliptic Pole Wide Survey Field
Yiseul Jeon, Myungshin Im, Mansur Ibrahimov +3
We present the source catalog and the properties of the , and band images obtained to support the {\it AKARI} North Ecliptic Pole Wide (NEP-Wide) survey. The NEP-Wide i…
The Anisotropic Two-Point Correlation Functions of the Nonlinear Traceless Tidal Field in the Principal-Axis Frame
Jounghun Lee, Oliver Hahn, Cristiano Porciani
Galaxies on the largest scales of the Universe are observed to be embedded in the filamentary cosmic web which is shaped by the nonlinear tidal field. As an efficient tool to quant…
An Ultraviolet Study of Star-Forming Regions in M31
Yongbeom Kang, Luciana Bianchi, Soo-Chang Rey
We present a comprehensive study of star-forming (SF) regions in the nearest large spiral galaxy M31. We use GALEX far-UV (1344-1786 Å, FUV) and near-UV (1771-2831 Å, NUV) imaging…
Ages of M33 Star Clusters Based on the HST/WFPC2 Photometry
Won-Kee Park, Hong Soo Park, Myung Gyoon Lee
We present a result of age estimation for star clusters in M33. We obtain color-magnitude diagrams (CMDs) of resolved stars in 242 star clusters from the HST/WFPC2 images. We estim…
Probing the Warm Dark Matter with High-z Quasar Luminosity Function
Hyunmi Song, Jounghun Lee
In a warm dark matter (WDM) cosmology, the first objects to form at z>=20 are one dimensional filaments with mean length on the order of the WDM free-streaming scale. Gao and Theun…