626 citations · 1.9k across the 40 of their papers we have counts for
43 papers
Early onset of the hot circumgalactic medium around Milky Way galaxies
Víctor Rufo-Pastor, Oscar Agertz, Santi Roca-Fábrega +6
Hot coronae are key regulators in Milky Way (MW)-type galaxy formation and are thought to emerge once a galaxy's dark matter halo crosses a critical mass threshold, $M_{\mathrm{vir…
The driving mode of turbulence in disc galaxy simulations with adaptive mesh refinement
James Watt, Christoph Federrath, Thorsten Tepper-Garcia +2
Turbulence is a key ingredient in controlling the structure of the interstellar medium (ISM) and star formation, yet we still lack a detailed understanding of its drivers in galaxi…
Nexus-CDM: Isolated Galaxy Simulations with Cosmologically Evolving Dark-Matter Halos I. Method and Validation
Thor Tepper-García, Joss Bland-Hawthorn, Oscar Agertz +1
Galaxy evolution can be modelled in two complementary ways. Standalone simulations place a single galaxy in isolation, evolving it under controlled initial conditions without the s…
Temperature asymmetry in the Milky Way's hot circumgalactic medium induced by the Magellanic Clouds
Alexandru Oprea, Filippo Fraternali, Else Starkenburg +2
The Milky Way is surrounded by a hot diffuse circumgalactic medium (CGM) with temperatures of millions of degrees. Recent X-ray observations with the eROSITA satellite discovered a…
Galactic seismology: can a disc-crossing impulse explain the large-scale perturbations in the Milky Way's disc?
Pavadol Yamsiri, Joss Bland-Hawthorn, Thor Tepper-Garcia
Prior to its infall, the Sagittarius (Sgr) dwarf galaxy was a major satellite with a mass of M. For the past , it has been heav…
Towards Understanding the Milky Way's Matter Field and Dynamical Accretion History based on AI-GS3 Hunter
Hai-Feng Wang, Guan-Yu Wang, Giovanni Carraro +5
We present GS3 Hunter (Galactic-Seismology Substructures and Streams Hunter), a novel deep-learning method that combines Siamese Neural Networks and K-means clustering to identify…
HI terminal velocity curves -- Lessons learned from N-body/hydrodynamic `surrogate' models of the Milky Way
Hillary Davis, Thor Tepper-Garcia, Naomi McClure-Griffiths +2
The development of an N-body/hydrodynamic `surrogate' model of the Milky Way (MW) - a model that resembles the MW in several key aspects after many Gyrs of evolution - would be ext…
Galactic seismology: can the Gaia 'phase spiral' co-exist with a clumpy, turbulent interstellar medium?
Thor Tepper-García, Joss Bland-Hawthorn, Timothy R. Bedding +2
The Gaia satellite revealed a remarkable spiral pattern ('phase spiral', PS) in the z-Vz phase-plane throughout the solar neighbourhood, where z and Vz are the displacement and vel…
Turbulent gas-rich discs at high redshift: origin of thick stellar discs through 3D 'baryon sloshing'
Joss Bland-Hawthorn, Thor Tepper-Garcia, Oscar Agertz +8
In response to recent observations from JWST and ALMA, we explore a new class of dynamically self-consistent models using our AGAMA/Ramses hydrodynamic N-body framework (Nexus) tha…
Signatures of simulated spiral arms on radial actions
P. A. Palicio, A. Recio-Blanco, T. Tepper-Garcia +7
Among the various implications of the spiral arms, it has been observed in the Milky Way disc that the distribution of radial actions from the Gaia Data Release 3 exhibits structur…
Nexus: A framework for conrolled simulations of idealised galaxies
Thor Tepper-Garcia, Joss Bland-Hawthorn, Eugene Vasiliev +3
Motivated by the need for realistic, dynamically self-consistent, evolving galaxy models that avoid the complexity of full, and zoom-in, cosmological simulations, we have developed…
Discovery of a dormant 33 solar-mass black hole in pre-release Gaia astrometry
Gaia Collaboration, P. Panuzzo, T. Mazeh +412
Gravitational waves from black-hole merging events have revealed a population of extra-galactic BHs residing in short-period binaries with masses that are higher than expected base…
Turbulent gas-rich disks at high redshift: bars & bulges in a radial shear flow
Joss Bland-Hawthorn, Thor Tepper-Garcia, Oscar Agertz +1
Recent observations of high-redshift galaxies () reveal that a substantial fraction have turbulent, gas-rich disks with well-ordered rotation and elevated levels of s…
Galactic-Seismology Substructures and Streams Hunter with LAMOST and Gaia. I. Methodology and Local Halo Results
Guan-Yu Wang, Hai-Feng Wang, Yang-Ping Luo +4
We present a novel, deep-learning based method -- dubbed Galactic-Seismology Substructures and Streams Hunter, or GS Hunter for short, to search for substructures and streams…
The far side of the Galactic bar/bulge revealed through semi-regular variables
Daniel R. Hey, Daniel Huber, Benjamin J. Shappee +8
The Galactic bulge and bar are critical to our understanding of the Milky Way. However, due to the lack of reliable stellar distances, the structure and kinematics of the bulge/bar…
The rapid onset of stellar bars in the baryon-dominated centers of disk galaxies
J. Bland-Hawthorn, T. Tepper-Garcia, O. Agertz +1
Recent observations of high-redshift galactic disks () show a strong negative trend in the dark matter fraction with increasing baryonic surface density. For…
A new resonance-like feature in the outer disc of the Milky Way
Ronald Drimmel, Shourya Khanna, Elena D'Onghia +18
Modern astrometric and spectroscopic surveys have revealed a wealth of structure in the phase space of stars in the Milky Way, with evidence of resonance features and non-equilibri…
The disturbed outer Milky Way disc
Paul J. McMillan, Jonathan Petersson, Thor Tepper-Garcia +9
The outer parts of the Milky Way's disc are significantly out of equilibrium. Using only distances and proper motions of stars from Gaia's Early Data Release 3, in the range |b|<10…
Kinematic-Chemical analysis and Time tagging for the Diagonal Ridge Structure of the Galactic Outer Disk with LAMOST Red Giant Branch Stars
Peng Yang, Hai-Feng Wang, Zhi-Quan Luo +2
We investigate the kinematic-chemical distribution of Red Giant Branch (RGB) stars from the LAMOST survey crossed matched with Gaia DR2 proper motions, and present time tagging for…
Galactic seismology: joint evolution of impact-triggered stellar and gaseous disc corrugations
Thor Tepper-Garcia, Joss Bland-Hawthorn, Ken Freeman
Evidence for wave-like corrugations are well established in the Milky Way and in nearby disc galaxies. These were originally detected as a displacement of the interstellar medium a…
GASKAP-HI Pilot Survey Science I: ASKAP Zoom Observations of HI Emission in the Small Magellanic Cloud
N. M. Pingel, J. Dempsey, N. M. McClure-Griffiths +53
We present the most sensitive and detailed view of the neutral hydrogen (HI) emission associated with the Small Magellanic Cloud (SMC), through the combination of data from the Aus…
The role of the halo magnetic field on accretion through High-Velocity Clouds
Asger Grønnow, Thor Tepper-García, Joss Bland-Hawthorn +1
High-Velocity Clouds (HVCs) are believed to be an important source of gas accretion for star formation in the Milky Way. Earlier numerical studies have found that the Galactic magn…
A barred Milky Way surrogate from an N-body simulation
T. Tepper-Garcia, J. Bland-Hawthorn, E. Vasiliev +10
We present an N-body model for the barred Milky Way (MW) galaxy that reproduces many of its properties, including the overall mass distribution, the disc kinematics, and the proper…
The GALAH Survey: Chemical Clocks
Michael R. Hayden, Sanjib Sharma, Joss Bland-Hawthorn +27
Previous studies have found that the elemental abundances of a star correlate directly with its age and metallicity. Using this knowledge, we derive ages for a sample of 250,000 st…