115 citations · 934 across the 23 of their papers we have counts for
23 papers
Modeling the Dynamics and Thermochemistry for the Outer Atmospheres of the Ultra-hot Jupiter WASP-121b
Lile Wang, Yiren Lin, Ji Wang +1
We present three-dimensional simulations of the ultra-hot Jupiter (UHJ) WASP-121b from the planetary surface to extended outflows, coupling hydrodynamics with consistent non-equili…
Observational Signatures of Disk Winds in Protoplanetary Disks: Differentiating Magnetized and Photoevaporative Outflows With Fully Coupled Thermochemistry
Xiao Hu, Jaehan Bae, Zhaohuan Zhu +1
Magnetized winds and photoevaporative winds are critical in shaping protoplanetary disk evolution. Using 2D axisymmetric (magneto-)hydrodynamic simulations with Athena++ implementi…
High-resolution [O I] line spectral mapping of TW Hya supportive of a magnetothermal wind
Min Fang, Lile Wang, Gregory J. Herczeg +6
Disk winds are thought to play a critical role in the evolution and dispersal of protoplanetary disks. A primary diagnostic of this physics is emission from the wind, especially in…
Gap Opening in Protoplanetary Disks: Gas Dynamics from Global Non-ideal MHD Simulations with Consistent Thermochemistry
Xiao Hu, Zhi-Yun Li, Lile Wang +2
Recent high angular resolution ALMA observations have revealed numerous gaps in protoplanetary disks. A popular interpretation has been that planets open them. Most previous invest…
Detection of Atmospheric Escape from Four Young Mini Neptunes
Michael Zhang, Heather A. Knutson, Fei Dai +5
We use Keck/NIRSPEC to survey a sample of of young (1 Gyr), short period mini Neptunes orbiting nearby K dwargs to measure their mass loss via the metastable helium line. We det…
Dynamical Effects of Colliding Outflows in Binary Systems
Lile Wang, Xinyu Li
The outflow of an object traveling in a fluid can shape the fluid morphology by forming a forward bow shock which accelerates the object via gravitational feedback. This dynamical…
The Maximum Mass-Loss Efficiency for a Photoionization-Driven Isothermal Parker Wind
Shreyas Vissapragada, Heather A. Knutson, Leonardo A. dos Santos +2
Observations of present-day mass-loss rates for close-in transiting exoplanets provide a crucial check on models of planetary evolution. One common approach is to model the planeta…
Escaping Helium from TOI 560.01, a Young Mini Neptune
Michael Zhang, Heather A. Knutson, Lile Wang +2
We report helium absorption from the escaping atmosphere of TOI 560.01 (HD 73583b), a , d mini Neptune orbiting a young (600 Myr) K dwarf. Using Keck/…
Detection of Ongoing Mass Loss from HD 63433c, a Young Mini Neptune
Michael Zhang, Heather A. Knutson, Lile Wang +9
We detect Lyman absorption from the escaping atmosphere of HD 63433c, a , d mini Neptune orbiting a young (440 Myr) solar analogue in the Ursa Major M…
Metastable Helium Absorptions with 3D Hydrodynamics and Self-Consistent Photochemistry II: WASP-107b, Stellar Wind, Radiation Pressure, and Shear Instability
Lile Wang, Fei Dai
This paper presents simulations of the metastable helium (He*) observations of WASP-107b, so far the highest signal-to-noise ratio detection that is confirmed by three different in…
Metastable Helium Absorptions with 3D Hydrodynamics and Self-Consistent Photochemistry I: WASP-69b, Dimensionality, XUV Flux Level, Spectral Types, and Flares
Lile Wang, Fei Dai
The metastable Helium (He*) lines near are ideal probes of atmospheric erosion--a common phenomenon of close-in exoplanet evolution. A handful of exoplanet observat…
No escaping helium from 55 Cnc e
Michael Zhang, Heather A. Knutson, Lile Wang +3
We search for escaping helium from the hot super Earth 55 Cnc e by taking high-resolution spectra of the 1083 nm line during two transits using Keck/NIRSPEC. We detect no helium ab…
The role of FUV Pumping in exciting the [Oi] lines in Protostellar Disks and Winds
Ahmad Nemer, Jeremy Goodman, Lile Wang
We use Cloudy to re-examine excitation of [Oi] 6300 A and [Oi] 5577 A in the X-ray driven photo-evaporative wind models of Owen and collaborators, and in more recent magnetothermal…
Dusty outflows in planetary atmospheres: Understanding "super-puffs" and transmission spectra of sub-Neptunes
Lile Wang, Fei Dai
`Super-puffs' are planets with anomalously low mean densities (). With a low surface gravity, the extended atmosphere is susceptible to extreme h…
Global Simulations of Protoplanetary Disk Outflows with Coupled Non-ideal Magnetohydrodynamics and Consistent Thermochemistry
Lile Wang, Xue-Ning Bai, Jeremy Goodman
Magnetized winds may be important in dispersing protoplanetary disks and influencing planet formation. We carry out global full magnetohydrodynamic simulations in axisymmetry, coup…
Evaporation of Low-Mass Planet Atmospheres: Multidimensional Hydrodynamics with Consistent Thermochemistry
Lile Wang, Fei Dai
Direct and statistical observational evidences suggest that photoevaporation is important in eroding the atmosphere of sub-Neptune planets. We construct full hydrodynamic simulatio…
Hydrodynamic Photoevaporation of Protoplanetary Disks with Consistent Thermochemistry
Lile Wang, Jeremy J. Goodman
Photoevaporation is an important dispersal mechanism for protoplanetary disks. We conduct hydrodynamic simulations coupled with ray-tracing radiative transfer and consistent thermo…
Searching for Binary Supermassive Black Holes via Variable Broad Emission Line Shifts: Low Binary Fraction
Lile Wang, Jenny E. Greene, Wenhua Ju +3
Supermassive black hole binaries (SMBHs) are expected to result from galaxy mergers, and thus are natural byproducts (and probes) of hierarchical structure formation in the Univers…
Wind-driven Accretion in Transitional Protostellar Disks
Lile Wang, Jeremy J. Goodman
Transitional protostellar disks have inner cavities heavily depleted in dust and gas, yet most show signs of ongoing accretion, often at rates comparable to full disks. We show tha…
Inflow Generated X-ray Corona Around Supermassive Black Holes and Unified Model for X-ray Emission
Lile Wang, Renyue Cen
Three-dimensional hydrodynamic simulations, covering the spatial domain from hundreds of Schwarzschild radii to around the central supermassive black hole of mass…
Steady-State Axisymmetric MHD Solutions with Various Boundary Conditions
Lile Wang, Yu-Qing Lou
Axisymmetric magnetohydrodynamics (MHD) can be invoked for describing astrophysical magnetized flows and formulated to model stellar magnetospheres including main sequence stars (e…
An analytic model for redshift-space distortions
Lile Wang, Beth Reid, Martin White
Understanding the formation and evolution of large-scale structure is a central problem in cosmology and enables precise tests of General Relativity on cosmological scales and cons…
Dynamic Voids Surrounded by Shocked Conventional Polytropic Gas Envelopes
Yu-Qing Lou, Li-Le Wang
With proper physical mechanisms of energy and momentum input from around the centre of a self-gravitating polytropic gas sphere, a central spherical "void" or "cavity" or "bubble"…