161 citations · 1.3k across the 31 of their papers we have counts for
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How Magnetic Fields Regulate Cooling and Mixing in Turbulent Radiative Mixing Layers
Rajsekhar Mohapatra, Lachlan Lancaster, Drummond Fielding +2
Turbulent radiative mixing layers (TRMLs) are expected wherever hot and cold gas move past one another, including in the solar corona, galactic winds, and cold filaments in galaxy…
Illuminating M82: Simulating X-ray Emission from Galactic Winds in a Starburst Galaxy
Allison Lin, Lachlan Lancaster, Viraj Pandya +6
We generate mock X-ray observations from a suite of idealized high-resolution ( pc), tall-box ( kpc) simulations of star formation driven gala…
Clumps in a Cocoon: Geometry and Mixing Set the Universal X-ray to H Surface Brightness Ratio
Zirui Chen, S. Peng Oh, Drummond B. Fielding +3
Recent observations reveal a universal X-ray to H surface-brightness ratio, , in galactic winds, ram-pressure stripped tails, and clust…
The Origin of Da Scaling: Suppressed Cooling in Fast-Cooling Mixing Layers
Lachlan Lancaster, Drummond B. Fielding, Rajsekhar Mohapatra +1
In numerical experiments simulating Turbulent Radiative Mixing Layers (TRMLs) it is observed that as the cooling time in the mixed gas, , becomes very short compared…
Ceci n'est pas une Couche de Mélange: The Meaning of Resolved Turbulent Radiative Mixing
Lachlan Lancaster, Rajsekhar Mohapatra, Drummond B. Fielding +1
Turbulent Radiative Mixing Layers (TRMLs) are of fundamental importance to the transport of energy and momentum in multi-phase, astrophysical fluids. We use measurements of the "mi…
Cosmic Ray Feedback in Galactic Disks: Star Formation, Cosmic Ray Transport, and Multiphase Outflows in TIGRESS++ Simulations
Chang-Goo Kim, Lucia Armillotta, Eve C. Ostriker +5
We present new simulations of local star-forming disks that self-consistently evolve cosmic rays (CRs) and multiphase gas using TIGRESS++. To isolate the role of CRs, we conduct pa…
Blue Monsters and Dusty Descendants: Reconciling UV and IR Emission from Galaxies from z=7, up to z= 14
Laura Sommovigo, Lachlan Lancaster, Shyam H. Menon +3
Recent JWST observations reveal massive, UV-bright galaxies at with little apparent dust attenuation, whereas ALMA detections at show similarly massive system…
The Co-Evolution of Stellar Wind-blown Bubbles and Photoionized Gas II: 3D RMHD Simulations and Tests of Semi-Analytic Models
Lachlan Lancaster, Chang-Goo Kim, Jeong-Gyu Kim +2
In a companion paper (Paper I) we presented a Co-Evolution Model (CEM) in which to consider the evolution of feedback bubbles driven by massive stars through both stellar winds and…
The Co-Evolution of Stellar Wind-blown Bubbles and Photoionized Gas I: Physical Principles and a Semi-Analytic Model
Lachlan Lancaster, Jeong-Gyu Kim, Greg L. Bryan +3
We propose a new framework for the simultaneous feedback of stellar winds and photo-ionizing radiation from massive stars, distinguishing the locations where forces are applied, an…
Density modulated star formation efficiency: implications for the observed abundance of ultra-violet luminous galaxies at z>10
Rachel S. Somerville, L. Y. Aaron Yung, Lachlan Lancaster +3
The number density of UV luminous galaxies discovered by the James Webb Space Telescope at ultra high redshift () is higher, and declines much more slowly with increa…
Geometry, Dissipation, Cooling, and the Dynamical Evolution of Wind-Blown Bubbles
Lachlan Lancaster, Eve C. Ostriker, Chang-Goo Kim +2
Bubbles driven by energy and mass injection from small scales are ubiquitous in astrophysical fluid systems and essential to feedback across multiple scales. In particular, O stars…
The Interplay between the IMF and Star Formation Efficiency through Radiative Feedback at High Stellar Surface Densities
Shyam H. Menon, Lachlan Lancaster, Blakesley Burkhart +3
The observed rest-UV luminosity function at cosmic dawn () measured by JWST revealed an excess of UV-luminous galaxies relative to many pre-launch theoretical predicti…
Structure, Kinematics, and Observability of the Large Magellanic Cloud's Dynamical Friction Wake in Cold vs. Fuzzy Dark Matter
Hayden R. Foote, Gurtina Besla, Philip Mocz +7
The Large Magellanic Cloud (LMC) will induce a dynamical friction (DF) wake on infall to the Milky Way (MW). The MW's stellar halo will respond to the gravity of the LMC and the da…
Ultra-Diffuse Galaxies as Extreme Star-forming Environments II: Star Formation and Pressure Balance in HI-Rich UDGs
Erin Kado-Fong, Chang-Goo Kim, Jenny E. Greene +1
In addition to occupying the extreme, diffuse tail of the dwarf galaxy population, Ultra-Diffuse Galaxies (UDGs) are themselves a key laboratory in which to study star formation in…
Star Formation Regulation and Self-Pollution by Stellar Wind Feedback
Lachlan Lancaster, Eve C. Ostriker, Jeong-Gyu Kim +1
Stellar winds contain enough energy to easily disrupt the parent cloud surrounding a nascent star cluster, and for this reason have been considered candidates for regulating star f…
A Search for Wandering Black Holes in the Milky Way with Gaia and DECaLS
Jenny E. Greene, Lachlan Lancaster, Yuan-Sen Ting +6
We present a search for "hyper-compact" star clusters in the Milky Way using a combination of Gaia and the Dark Energy Camera Legacy Survey (DECaLS). Such putative clusters, with s…
Efficiently Cooled Stellar Wind Bubbles in Turbulent Clouds II. Validation of Theory with Hydrodynamic Simulations
Lachlan Lancaster, Eve C. Ostriker, Jeong-Gyu Kim +1
In a companion paper, we develop a theory for the evolution of stellar wind driven bubbles in dense, turbulent clouds. This theory proposes that turbulent mixing at a fractal bubbl…
Efficiently Cooled Stellar Wind Bubbles in Turbulent Clouds I. Fractal Theory and Application to Star-Forming Clouds
Lachlan Lancaster, Eve C. Ostriker, Jeong-Gyu Kim +1
Winds from massive stars have velocities of 1000 km/s or more, and produce hot, high pressure gas when they shock. We develop a theory for the evolution of bubbles driven by the co…
Hyper Suprime-Cam Low Surface Brightness Galaxies II: A Hubble Space Telescope Study of the Globular Cluster Systems of Ultra-Diffuse Galaxies in Groups
Jean J. Somalwar, Jenny E. Greene, Johnny P. Greco +4
We increase the sample of ultra diffuse galaxies (UDGs) in lower density environments with characterized globular cluster (GC) populations using new Hubble Space Telescope observat…
First star-forming structures in fuzzy cosmic filaments
Philip Mocz, Anastasia Fialkov, Mark Vogelsberger +10
In hierarchical models of structure formation, the first galaxies form in low-mass dark matter potential wells, probing the behavior of dark matter on kiloparsec (kpc) scales. Even…
The Halo's Ancient Metal-Rich Progenitor Revealed with BHB Stars
Lachlan Lancaster, Sergey E. Koposov, Vasily Belokurov +2
Using the data from the Sloan Digital Sky Survey and the Gaia satellite, we assemble a pure sample of 3000 Blue Horizontal Branch (BHB) stars with 7-D information, including…
Apocenter Pile-Up: Origin of the Stellar Halo Density Break
Alis J. Deason, Vasily Belokurov, Sergey E. Koposov +1
We measure the orbital properties of halo stars using 7-dimensional information provided by Gaia and the Sloan Digital Sky Survey. A metal-rich population of stars, present in both…
Quantifying the Smoothness of the Stellar Halo: A Link to Accretion History
Lachlan Lancaster, Vasily Belokurov, N. Wyn Evans
We investigate the utility of the 3-dimensional Two-Point Correlation Function (3D 2PCF) in quantifying substructure in the stellar halo of the Milky Way, particularly as a means o…