Shude Mao
YOU?
Author Swipe
View article: KMT-2022-BLG-1818Lb,c: A Cold Super-Jupiter with a Saturn Sibling
KMT-2022-BLG-1818Lb,c: A Cold Super-Jupiter with a Saturn Sibling Open
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. The second planet was identified from implausible physical param…
View article: Binary-lens Microlensing Degeneracy: Impact on Planetary Sensitivity and Mass-ratio Function
Binary-lens Microlensing Degeneracy: Impact on Planetary Sensitivity and Mass-ratio Function Open
Gravitational microlensing is a unique method for discovering cold planets across a broad mass range. Reliable statistics of the microlensing planets require accurate sensitivity estimates. However, the impact of the degeneracies in binary…
View article: Orbit-based structural decomposition and stellar population recovery for edge-on barred galaxies
Orbit-based structural decomposition and stellar population recovery for edge-on barred galaxies Open
In our previous paper, we developed an orbit-superposition method for edge-on barred galaxies and constructed a set of dynamical models based on different mock observations of three galaxies from the Auriga simulations. In this study, we a…
View article: A Comprehensive Analysis of Three Microlensing Planet Candidates with the Planet/Binary Degeneracy
A Comprehensive Analysis of Three Microlensing Planet Candidates with the Planet/Binary Degeneracy Open
We present observations and analyses of three high-magnification microlensing events: KMT-2022-BLG-0954, KMT-2024-BLG-0697, and MOA-2024-BLG-018. All three exhibit the “Planet/Binary” degeneracy, with planetary solutions corresponding to m…
View article: High-order stellar kinematics in MaNGA integral-field spectroscopy survey: classification, stellar population, and the impact of galaxy bars and mergers
High-order stellar kinematics in MaNGA integral-field spectroscopy survey: classification, stellar population, and the impact of galaxy bars and mergers Open
We extract with ppxf and analyse the high-order stellar kinematic moments $h_{\rm 3}$ (related to skewness) and $h_{\rm 4}$ (related to kurtosis) in a complete subsample of 2230 galaxies with well-sampled line-of-sight velocity distributio…
View article: A Vertically Orientated Dark Matter Halo Marks a Flip of the Galactic Disk
A Vertically Orientated Dark Matter Halo Marks a Flip of the Galactic Disk Open
Unveiling the 3D shape of the Milky Way's dark-matter halo is critical to understanding its formation history. We created an innovative dynamical model with minimal assumptions on the internal dynamical structures and accommodates a highly…
View article: Gravitational lensing by a spiral galaxy I: the influence from bar's structure to the flux ratio anomaly
Gravitational lensing by a spiral galaxy I: the influence from bar's structure to the flux ratio anomaly Open
Gravitational lens flux ratio anomalies are a powerful probe of small-scale mass structures within lens galaxies. These anomalies are often attributed to dark matter subhalos, but the baryonic components of the lens can also play a signifi…
View article: Uncovering 3D dark-matter distribution of the Milky Way using an empirical triaxial orbit-superposition model: Method validation
Uncovering 3D dark-matter distribution of the Milky Way using an empirical triaxial orbit-superposition model: Method validation Open
We introduce the empirical, triaxial orbit-superposition model, a novel dynamical model for the Milky Way halo. This model relies on minimal physical assumptions that the system is stationary, meaning the distribution function in 6D phase …
View article: MaNGA DynPop. VII. A Unified Bulge–Disk–Halo Model for Explaining Diversity in Circular Velocity Curves of 6000 Spiral and Early-type Galaxies
MaNGA DynPop. VII. A Unified Bulge–Disk–Halo Model for Explaining Diversity in Circular Velocity Curves of 6000 Spiral and Early-type Galaxies Open
We derive circular velocity curves (CVCs) from stellar dynamical models for ∼6000 nearby galaxies in the final data release of the Sloan Digital Sky Survey-IV MaNGA survey with integral-field spectroscopy, exploring connections between the…
View article: Orbit-based structural decomposition and stellar population recovery for edge-on barred galaxies
Orbit-based structural decomposition and stellar population recovery for edge-on barred galaxies Open
In our previous paper, we developed an orbit-superposition method for edge-on barred galaxies and constructed a set of dynamical models based on different mock observations of three galaxies from the Auriga simulations. In this study, we a…
View article: Dynamical Instability of Multiplanet Systems and Free-floating Planets
Dynamical Instability of Multiplanet Systems and Free-floating Planets Open
The ejection of planets by the instability of planetary systems is a potential source of free-floating planets. We numerically simulate multiplanet systems to study the evolution process, the properties of the surviving systems, and the st…
View article: The degeneracy between microlensing wave effect and precession in strongly lensed gravitational wave
The degeneracy between microlensing wave effect and precession in strongly lensed gravitational wave Open
Microlensing induced by the stellar field within a strong lensing galaxy can introduce fluctuations in the waveforms of strongly-lensed gravitational waves. When fitting these signals with templates that do not account for microlensing,pos…
View article: A New Brown Dwarf Orbiting an M Star and an Investigation of the Eccentricity Distribution of Transiting Long-period Brown Dwarfs
A New Brown Dwarf Orbiting an M Star and an Investigation of the Eccentricity Distribution of Transiting Long-period Brown Dwarfs Open
The orbital eccentricities of brown dwarfs encode valuable information on their formation and evolution history, providing insights into whether they resemble giant planets or stellar binaries. Here, we report the discovery of TOI-5575 b, …
View article: Recovering the pattern speeds of edge-on barred galaxies via an orbit-superposition method
Recovering the pattern speeds of edge-on barred galaxies via an orbit-superposition method Open
We developed an orbit-superposition method for edge-on barred galaxies and evaluated its capability to recover the bar pattern speed Ω p . We selected three simulated galaxies (Au-18, Au-23, and Au-28) with known pattern speeds from the Au…
View article: Introduction to the Chinese Space Station Survey Telescope (CSST)
Introduction to the Chinese Space Station Survey Telescope (CSST) Open
The Chinese Space Station Survey Telescope (CSST) is an upcoming Stage-IV sky survey telescope, distinguished by its large field of view (FoV), high image quality, and multi-band observation capabilities. It can simultaneously conduct prec…
View article: MOA-2022-BLG-091Lb and KMT-2024-BLG-1209Lb: Microlensing planets detected through weak caustic-crossing signals
MOA-2022-BLG-091Lb and KMT-2024-BLG-1209Lb: Microlensing planets detected through weak caustic-crossing signals Open
Aims . The light curves of the microlensing events MOA-2022-BLG-091 and KMT-2024-BLG-1209 exhibit anomalies with very similar features. These anomalies appear near the peaks of the light curves, where the magnifications are moderately high…
View article: MOA-2022-BLG-091Lb and KMT-2024-BLG-1209Lb: Microlensing planets detected through weak caustic-crossing signals
MOA-2022-BLG-091Lb and KMT-2024-BLG-1209Lb: Microlensing planets detected through weak caustic-crossing signals Open
The light curves of the microlensing events MOA-2022-BLG-091 and KMT-2024-BLG-1209 exhibit anomalies with very similar features. These anomalies appear near the peaks of the light curves, where the magnifications are moderately high, and a…
View article: A negative stellar mass−gaseous metallicity gradient relation of dwarf galaxies modulated by stellar feedback
A negative stellar mass−gaseous metallicity gradient relation of dwarf galaxies modulated by stellar feedback Open
Baryonic cycling is reflected in the spatial distribution of metallicity within galaxies; however, gas-phase metallicity distribution and its connection with other properties of dwarf galaxies are largely unexplored. We present the first s…
View article: KMT-2022-BLG-1818Lb,c: A Cold Super-Jupiter with a Saturn Sibling
KMT-2022-BLG-1818Lb,c: A Cold Super-Jupiter with a Saturn Sibling Open
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 planets are subject to the well-known ''Close/Wide'' degene…
View article: Systematic Reanalysis of KMTNet Microlensing Events. II. Two New Planets in Giant-source Events
Systematic Reanalysis of KMTNet Microlensing Events. II. Two New Planets in Giant-source Events Open
In this work, we continue to apply the updated KMTNet tender-love care photometric pipeline to historical microlensing events. We apply the pipeline to a subsample of events from the KMTNet database, which we refer to as the giant source s…
View article: Microlensing events indicate that super-Earth exoplanets are common in Jupiter-like orbits
Microlensing events indicate that super-Earth exoplanets are common in Jupiter-like orbits Open
Exoplanets classified as super-Earths are commonly observed on short-period orbits, close to their host stars, but their abundance on wider orbits is poorly constrained. Gravitational microlensing is sensitive to exoplanets on wide orbits.…
View article: Systematic Search for FFPs in KMTNet Full-Frame Images. I. Photometry Pipeline
Systematic Search for FFPs in KMTNet Full-Frame Images. I. Photometry Pipeline Open
To exhume the buried signatures of free-floating planets (FFPs) with small angular Einstein radius $θ_{\rm E}$, we build a new full-frame difference image pipeline for the Korean Microlensing Telescope Network (KMTNet) survey based on the …
View article: Dynamical Models of the Milky Way in Action Space with LAMOST DR8 and Gaia EDR3
Dynamical Models of the Milky Way in Action Space with LAMOST DR8 and Gaia EDR3 Open
This work explores dynamical models of the Milky Way (MW) by analyzing a sample of 86,109 K giant stars selected through cross-matching the LAMOST DR8 and Gaia EDR3 surveys. Our earlier torus models of Q. Wang et al. did not include Gaia d…
View article: Asteroseismology with TESS: Emergence of Dipole Mode Suppression from Subgiants?
Asteroseismology with TESS: Emergence of Dipole Mode Suppression from Subgiants? Open
Dipole mode suppression is an observed behavior of solar-like oscillations in evolved stars. This study aims to search for depressed dipole modes in giant stars using data from the Transiting Exoplanet Survey Satellite (TESS) and investiga…
View article: Dynamical Models of the Milky Way in Action Space with LAMOST DR8 and GAIA EDR3
Dynamical Models of the Milky Way in Action Space with LAMOST DR8 and GAIA EDR3 Open
This work explores dynamical models of the Milky Way (MW) by analyzing a sample of 86,109 K giant stars selected through cross-matching the LAMOST DR8 and Gaia EDR3 surveys. Our earlier torus models in Wang et al. (2017) did not include Ga…
View article: LensWatch. II. Improved Photometry and Time-delay Constraints on the Strongly Lensed Type Ia Supernova 2022qmx (“SN Zwicky”) with Hubble Space Telescope Template Observations
LensWatch. II. Improved Photometry and Time-delay Constraints on the Strongly Lensed Type Ia Supernova 2022qmx (“SN Zwicky”) with Hubble Space Telescope Template Observations Open
Strongly lensed supernovae (SNe) are a rare class of transient that can offer tight cosmological constraints that are complementary to methods from other astronomical events. We present a follow-up study of one recently discovered strongly…
View article: Metallicity Dependence of Giant Planets around M Dwarfs
Metallicity Dependence of Giant Planets around M Dwarfs Open
We investigate the stellar metallicity ([Fe/H] and [M/H]) dependence of giant planets around M dwarfs by comparing the metallicity distribution of 746 field M dwarfs without known giant planets with a sample of 22 M dwarfs hosting confirme…
View article: Dwarf Galaxy Integral-field Survey (DGIS): survey overview and the result of global mass-metallicity relation
Dwarf Galaxy Integral-field Survey (DGIS): survey overview and the result of global mass-metallicity relation Open
Low-mass galaxies are the building blocks of massive galaxies in the framework of hierarchical structure formation. To enable detailed studies of galactic ecosystems in dwarf galaxies by spatially resolving different galactic components, w…
View article: A Dynamic and Multilayered Examination of Comment Networks in a Crowdsourcing Challenge Community
A Dynamic and Multilayered Examination of Comment Networks in a Crowdsourcing Challenge Community Open
This study examines how participants of crowdsourcing challenges (ideators) provide comments to one another under the dual community forces of collaboration and competition. Content analysis reveals comment types with various degrees of co…
View article: Microlensing Events in Five Years of Photometry from the Zwicky Transient Facility
Microlensing Events in Five Years of Photometry from the Zwicky Transient Facility Open
Microlensing has a unique advantage for detecting dark objects in the Milky Way, such as free-floating planets, neutron stars, and stellar-mass black holes. Most microlensing surveys focus on the Galactic bulge, where higher stellar densit…