Hui Li
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View article: Mechanism of the electrochemical hydrogenation of graphene
Mechanism of the electrochemical hydrogenation of graphene Open
The electrochemical hydrogenation of graphene induces a robust and reversible conductor-insulator transition, of strong interest in logic-and-memory applications. However, its mechanism remains unknown. Here we show that it proceeds as a r…
View article: LenNet: direct detection and localization of strong gravitational lenses in wide-field sky survey images
LenNet: direct detection and localization of strong gravitational lenses in wide-field sky survey images Open
Strong gravitational lenses are invaluable for tackling fundamental astrophysics questions, such as the nature of dark matter and cosmic expansion. However, current sky surveys’ “crop-and-classify” lens search method faces a critical chall…
View article: A Dense Molecular Ringlike Structure in Gaseous CO Depletion Region G34.74−0.12
A Dense Molecular Ringlike Structure in Gaseous CO Depletion Region G34.74−0.12 Open
We report the discovery of a dense molecular ringlike structure in a dense (10 5 cm −3 ), cold (parsec-scale CO depletion at a factor of 5), and young (10 4 yr) star-forming region G34.74−0.12, revealed by C 18 O (2−1), HNC (1−0), and N 2 …
View article: Tracing the Origins of Hot Halo Gas in Milky Way–type Galaxies with SMUGGLE
Tracing the Origins of Hot Halo Gas in Milky Way–type Galaxies with SMUGGLE Open
Current galaxy formation models predict the existence of X-ray-emitting gaseous halos around Milky Way (MW)–type galaxies. To investigate properties of this coronal gas in MW-like galaxies, we analyze a suite of high-resolution simulations…
View article: The ALMA Survey of 70 <i>μ</i>m Dark High-mass Clumps in Early Stages (ASHES). XII. Unanchored Forked Stream in the Propagating Path of a Protostellar Outflow
The ALMA Survey of 70 <i>μ</i>m Dark High-mass Clumps in Early Stages (ASHES). XII. Unanchored Forked Stream in the Propagating Path of a Protostellar Outflow Open
Outflows are key indicators of ongoing star formation. We report the discovery of an unanchored forked stream within the propagating path of an extremely young protostellar outflow in the 70 μ m-dark clump G34.74-0.12, based on Atacama Lar…
View article: Probing Turbulence, Gravity, Supernovae, and Magnetic Field Effects with the 6D Kinematics of Young Stars in Milky Way Star-forming Regions
Probing Turbulence, Gravity, Supernovae, and Magnetic Field Effects with the 6D Kinematics of Young Stars in Milky Way Star-forming Regions Open
The dynamics of star-forming gas can be affected by many physical processes, such as turbulence, gravity, supernova explosions, and magnetic fields. In this paper, we investigate several nearby star-forming regions (Orion, Upper Sco, Tauru…
View article: The Importance of Tidal Forces in Molecular Cloud Dynamics
The Importance of Tidal Forces in Molecular Cloud Dynamics Open
We investigate the role of tidal forces in molecular cloud formation by examining how apparent boundedness, as diagnosed by the classical virial parameter, relates to the actual gravitational state of clouds subject to tidal forces from th…
View article: The ALMA Survey of 70 $μ$m Dark High-mass Clumps in Early Stages (ASHES). XII. Unanchored Forked Stream in the Propagating Path of a Protostellar Outflow
The ALMA Survey of 70 $μ$m Dark High-mass Clumps in Early Stages (ASHES). XII. Unanchored Forked Stream in the Propagating Path of a Protostellar Outflow Open
Outflows are key indicators of ongoing star formation. We report the discovery of an unanchored forked stream within the propagating path of an extremely young protostellar outflow in the 70 $μ$m-dark clump G34.74-0.12, based on ALMA 1.3 m…
View article: N-body simulations of galaxy bars generated by satellite collisions: effects of the impact geometry
N-body simulations of galaxy bars generated by satellite collisions: effects of the impact geometry Open
Bars, a common and important structure in disk galaxies, can be induced by galaxy interactions. Although there have been some studies on bar formation in flybys or collisions, the vast parameter space still leaves many scenarios that requi…
View article: Optical+Near-IR Analysis of a Newly Confirmed Einstein Ring at <i>z </i>∼ 1 from the Kilo-Degree Survey: Dark Matter Fraction, Total and Dark Matter Density Slope, and Initial Mass Function*
Optical+Near-IR Analysis of a Newly Confirmed Einstein Ring at <i>z </i>∼ 1 from the Kilo-Degree Survey: Dark Matter Fraction, Total and Dark Matter Density Slope, and Initial Mass Function* Open
We report the spectroscopic confirmation of a bright blue Einstein ring in the Kilo-Degree Survey (KiDS) footprint: the Einstein “blue eye.” Spectroscopic data from X-Shooter at the Very Large Telescope (VLT) show that the lens is a typica…
View article: A New Framework for Interstellar Medium Emission Line Models: Connecting Multiscale Simulations across Cosmological Volumes
A New Framework for Interstellar Medium Emission Line Models: Connecting Multiscale Simulations across Cosmological Volumes Open
The James Webb Space Telescope (JWST) and Atacama Large Millimeter/submillimeter Array have detected emission lines from the ionized interstellar medium (ISM) in some of the first galaxies at z ≳ 6. These measurements present an opportunit…
View article: Understanding the baryon cycle: Fueling star formation via inflows in Milky Way-like galaxies
Understanding the baryon cycle: Fueling star formation via inflows in Milky Way-like galaxies Open
Context. Galaxies are not isolated systems, as they interact with their surroundings throughout their lifetimes by both ejecting gas via stellar feedback and accreting gas from their environment. Understanding the interplay between the gas…
View article: The life cycle of giant molecular clouds in simulated Milky Way-mass galaxies
The life cycle of giant molecular clouds in simulated Milky Way-mass galaxies Open
In this work, we trace the complete life cycle of individual GMCs in high-resolution Milky Way-mass galaxy simulations to determine how different stellar feedback mechanisms and galactic-scale processes govern cloud lifetimes, mass evoluti…
View article: Stellar Streams Reveal the Mass Loss of Globular Clusters
Stellar Streams Reveal the Mass Loss of Globular Clusters Open
Globular cluster (GC) streams, debris of stars tidally stripped from their progenitor GCs, have densities that correlate positively with the GC mass-loss rate. In this work, we employ a novel particle spray algorithm that can accurately re…
View article: Two Channels of Metal-rich Compact Stellar System Formation: Starbursts under High Ram Pressure versus Tidal Stripping
Two Channels of Metal-rich Compact Stellar System Formation: Starbursts under High Ram Pressure versus Tidal Stripping Open
Most galaxies follow a well-defined scaling relation between metallicity and stellar mass; however, some outliers at the low-mass end of the observed galaxy population exhibit unusually high metallicity for their mass. Understanding how th…
View article: The Star Clusters as Links between Galaxy Evolution and Star Formation Project. I. Numerical Method
The Star Clusters as Links between Galaxy Evolution and Star Formation Project. I. Numerical Method Open
Stellar clusters are critical constituents within galaxies: They are the result of highest-density star formation, and through their spatially and temporally correlated feedback, they regulate their host galaxy evolution. We present a nove…
View article: Proton Acceleration in Low-β Magnetic Reconnection with Energetic Particle Feedback
Proton Acceleration in Low-β Magnetic Reconnection with Energetic Particle Feedback Open
Magnetic reconnection regions in space and astrophysics are known as active particle acceleration sites. There is ample evidence showing that energetic particles can take a substantial amount of converted energy during magnetic reconnectio…
View article: Size Growth on Short Timescales of Star-forming Galaxies: Insights from Size Variation with Rest-frame Wavelength with JADES
Size Growth on Short Timescales of Star-forming Galaxies: Insights from Size Variation with Rest-frame Wavelength with JADES Open
We investigate size variation with rest-frame wavelength for star-forming galaxies based on the second James Webb Space Telescope Advanced Deep Extragalactic Survey data release. Star-forming galaxies are typically smaller at longer wavele…
View article: Stellar streams reveal the mass loss of globular clusters
Stellar streams reveal the mass loss of globular clusters Open
Globular cluster (GC) streams, debris of stars that tidally stripped from their progenitor GCs, have densities that correlate positively with the GC mass loss rate. In this work, we employ a novel particle spray algorithm that can accurate…
View article: Bursty Star Formation in Dwarfs is Sensitive to Numerical Choices in Supernova Feedback Models
Bursty Star Formation in Dwarfs is Sensitive to Numerical Choices in Supernova Feedback Models Open
Simulations of galaxy formation are mostly unable to resolve the energy-conserving phase of individual supernova events, having to resort to subgrid models to distribute the energy and momentum resulting from stellar feedback. However, the…
View article: Analytical strong line diagnostics and their redshift evolution
Analytical strong line diagnostics and their redshift evolution Open
The JWST is allowing new measurements of gas-phase metallicities in galaxies between cosmic noon and cosmic dawn. The most robust approach uses luminosity ratios between the excited auroral transition, [O iii] 4364 Å, and the lower [O iii]…
View article: Two Channels of Metal-Rich Compact Stellar System Formation: Starbursts under High Ram Pressure versus Tidal Stripping
Two Channels of Metal-Rich Compact Stellar System Formation: Starbursts under High Ram Pressure versus Tidal Stripping Open
Most galaxies follow well-defined scaling relations of metallicity and stellar mass; however, some outliers at the low mass end of the observed galaxy population exhibit unusually high metallicity for their mass. Understanding how these ob…
View article: RIGEL: Simulating dwarf galaxies at solar mass resolution with radiative transfer and feedback from individual massive stars
RIGEL: Simulating dwarf galaxies at solar mass resolution with radiative transfer and feedback from individual massive stars Open
Context. Feedback from stars in the form of radiation, stellar winds, and supernovae is crucial to regulating the star formation activity of galaxies. Dwarf galaxies are especially susceptible to these processes, making them an ideal test …
View article: X-rays from a newly discovered superbubble in M31
X-rays from a newly discovered superbubble in M31 Open
A superbubble is a hot, dilute, and X-ray-emitting gas cavity produced by stellar winds and supernova explosions. It is an intriguing feature for the study of stellar feedback processes. We report a study of possible superbubbles in the An…
View article: The nature of diffuse ionized gas in star-forming galaxies
The nature of diffuse ionized gas in star-forming galaxies Open
We present an analysis of the diffuse ionized gas (DIG) in a high-resolution simulation of an isolated Milky Way-like galaxy, incorporating on-the-fly radiative transfer and non-equilibrium thermochemistry. We utilize the Monte-Carlo radia…
View article: Bursty Star Formation in Dwarfs is Sensitive to Numerical Choices in Supernova Feedback Models
Bursty Star Formation in Dwarfs is Sensitive to Numerical Choices in Supernova Feedback Models Open
Simulations of galaxy formation are mostly unable to resolve the energy-conserving phase of individual supernova events, having to resort to subgrid models to distribute the energy and momentum resulting from stellar feedback. However, the…
View article: eDIG-CHANGES. II. Project Design and Initial Results on NGC 3556
eDIG-CHANGES. II. Project Design and Initial Results on NGC 3556 Open
The extraplanar diffuse ionized gas (eDIG) represents ionized gases traced by optical/UV lines beyond the stellar extent of galaxies. We herein introduce a novel multislit narrow-band spectroscopy method to conduct spatially resolved spect…
View article: RIGEL: Simulating dwarf galaxies at solar mass resolution with radiative transfer and feedback from individual massive stars
RIGEL: Simulating dwarf galaxies at solar mass resolution with radiative transfer and feedback from individual massive stars Open
We introduce the RIGEL model, a novel framework to self-consistently model the effects of stellar feedback in the multiphase ISM of dwarf galaxies with radiative transfer (RT) on a star-by-star basis. The RIGEL model integrates detailed im…
View article: Evolution and distribution of superbubbles in simulated Milky Way-like galaxies
Evolution and distribution of superbubbles in simulated Milky Way-like galaxies Open
Stellar feedback plays a crucial role in regulating baryon cycles of a galactic ecosystem, and may manifest itself in the formation of superbubbles in the interstellar medium. In this work, we used a set of high-resolution simulations to s…
View article: The nature of diffuse ionised gas in star-forming galaxies
The nature of diffuse ionised gas in star-forming galaxies Open
We present an analysis of the diffuse ionised gas (DIG) in a high-resolution simulation of an isolated Milky Way-like galaxy, incorporating on-the-fly radiative transfer and non-equilibrium thermochemistry. We utilise the Monte-Carlo radia…