681 citations · 1.9k across the 19 of their papers we have counts for
20 papers
Mass Production of 2023 KMTNet Microlensing Planets. III: Three Planets from the Subprime Field
Hongyu Li, Zhixing Li, Weicheng Zang +56
To complete the analysis of the 2023 KMTNet subprime-field microlensing planetary events identified by its AlertFinder system, we present the analysis of six events, KMT-2023-BLG-(…
Mass Production of 2023 KMTNet Microlensing Planets. II: Two Planets and A Brown Dwarf
Zhixing Li, Hongyu Li, Weicheng Zang +63
To expand the homogeneous microlensing planetary sample of the Korea Microlensing Telescope Network (KMTNet), we investigate six planetary candidates identified by the AnomalyFinde…
KMT-2025-BLG-1616Lb: First Microlensing Bound Planet From DREAMS
Hongjing Yang, Weicheng Zang, Yoon-Hyun Ryu +60
We present observations and analysis of the bound planetary microlensing event KMT-2025-BLG-1616. The planetary signal was captured by the Korea Microlensing Telescope Network (KMT…
KMT-2022-BLG-1818Lb,c: A Cold Super-Jupiter with a Saturn Sibling
Hongyu Li, Jiyuan Zhang, Cheongho Han +72
We present the discovery and analysis of the sixth microlensing two-planet system, KMT-2022-BLG-1818Lb,c, detected by a follow-up program targeting high-magnification events. Both…
Photometric and Kinematic Misalignments and Their Evolution Among Fast and Slow Rotators in the Illustris Simulation
Lisiyuan Yang, Dandan Xu, Shude Mao +2
We use the Illustris simulation to study the distributions of ellipticities and kinematic misalignments of galactic projections, as well as the intrinsic shapes and rotation of the…
Constraining the inner density slope of massive galaxy clusters
Qiuhan He, Hongyu Li, Ran Li +7
We determine the inner density profiles of massive galaxy clusters (M > M) in the Cluster-EAGLE (C-EAGLE) hydrodynamic simulations, and investi…
Evaluating the ability of triaxial Schwarzschild modelling to estimate properties of galaxies from the Illustris simulation
Yunpeng Jin, Ling Zhu, R. J. Long +4
We evaluate the capabilities of Schwarzschild's orbit-superposition method by applying it to galaxies from the large scale, high resolution Illustris simulation. Nine early-type ga…
SDSS--IV MaNGA : The Inner Density Slopes of nearby galaxies
Ran Li, Hongyu Li, Shi Shao +12
We derive the mass weighted total density slopes within the effective (half-light) radius, , for more than 2000 nearby galaxies from the SDSS-IV MaNGA survey using Jeans-anisot…
Orbit properties of massive prolate galaxies in the Illustris simulation
Yougang Wang, Shude Mao, Hongyu Li +3
We explore orbit properties of 35 prolate-triaxial galaxies selected from the Illustris cosmological hydrodynamic simulation. We present a detailed study of their orbit families, a…
SDSS-IV MaNGA: pattern speeds of barred galaxies
Rui Guo, Shude Mao, E. Athanassoula +5
The MaNGA project has obtained IFU data for several thousand nearby galaxies, including barred galaxies. With the two dimensional spectral and kinematic information provided by IFU…
Recovering stellar population parameters via two full-spectrum fitting algorithms in the absence of model uncertainties
Junqiang Ge, Renbin Yan, Michele Cappellari +3
Using mock spectra based on Vazdekis/MILES library fitted within the wavelength region 3600-7350Å, we analyze the bias and scatter on the resulting physical parameters induced by t…
SDSS-IV MaNGA: Stellar angular momentum of about 2300 galaxies: unveiling the bimodality of massive galaxy properties
Mark T. Graham, Michele Cappellari, Hongyu Li +14
We measure , a proxy for galaxy specific stellar angular momentum within one effective radius, and the ellipticity, , for about 2300 galaxies of all morphological types…
SDSS-IV MaNGA: Global stellar population and gradients for about 2000 early-type and spiral galaxies on the mass-size plane
Hongyu Li, Shude Mao, Michele Cappellari +12
We perform full spectrum fitting stellar population analysis and Jeans Anisotropic modelling (JAM) of the stellar kinematics for about 2000 early-type galaxies (ETGs) and spiral ga…
SDSS-IV MaNGA: A Distinct Mass Distribution Explored in Slow-Rotating Early-type Galaxies
Yu Rong, Hongyu Li, Jie Wang +8
We study the radial acceleration relation (RAR) for early-type galaxies (ETGs) in the SDSS MaNGA MPL5 dataset. The complete ETG sample show a slightly offset RAR from the relation…
The origin and properties of massive prolate galaxies in the Illustris simulation
Hongyu Li, Shude Mao, Eric Emsellem +3
We study galaxy shapes in the Illustris cosmological hydrodynamic simulation. We find that massive galaxies have a higher probability of being prolate. For galaxies with stellar ma…
The Fourteenth Data Release of the Sloan Digital Sky Survey: First Spectroscopic Data from the extended Baryon Oscillation Spectroscopic Survey and from the second phase of the Apache Point Observatory Galactic Evolution Experiment
Bela Abolfathi, D. S. Aguado, Gabriela Aguilar +344
The fourth generation of the Sloan Digital Sky Survey (SDSS-IV) has been in operation since July 2014. This paper describes the second data release from this phase, and the fourtee…
SDSS-IV MaNGA: variation of the stellar initial mass function in spiral and early-type galaxies
Hongyu Li, Junqiang Ge, Shude Mao +10
We perform Jeans anisotropic modeling (JAM) on elliptical and spiral galaxies from the MaNGA DR13 sample. By comparing the stellar mass-to-light ratios estimated from stellar popul…
SDSS-IV MaNGA: environmental dependence of stellar age and metallicity gradients in nearby galaxies
Zheng Zheng, Huiyuan Wang, Junqiang Ge +20
We present a study on the stellar age and metallicity distributions for 1105 galaxies using the STARLIGHT software on MaNGA integral field spectra. We derive age and metallicity gr…
SDSS-IV MaNGA IFS Galaxy Survey --- Survey Design, Execution, and Initial Data Quality
Renbin Yan, Kevin Bundy, David R. Law +47
The MaNGA Survey (Mapping Nearby Galaxies at Apache Point Observatory) is one of three core programs in the Sloan Digital Sky Survey IV. It is obtaining integral field spectroscopy…
Assessing the Jeans Anisotropic Multi-Gaussian Expansion method with the Illustris simulation
Hongyu Li, Ran Li, Shude Mao +3
We assess the effectiveness of the Jeans-Anisotropic-MGE (JAM) technique with a state-of-the-art cosmological hydrodynamic simulation, the Illustris project. We perform JAM modelli…