Tyrone E. Woods
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View article: The Next Generation Virgo Cluster Survey (NGVS). XL. The Morphological Classification of Virgo Cluster Galaxies
The Next Generation Virgo Cluster Survey (NGVS). XL. The Morphological Classification of Virgo Cluster Galaxies Open
We present a study of morphologies, based on deep imaging of the Virgo Cluster from the Next Generation Virgo Cluster Survey, for 3689 Virgo cluster members spanning a mass range of ∼10 11 –10 5 M ⊙ . Our analysis introduces a …
View article: A Supermassive Black Hole in a Diminutive Ultracompact Dwarf Galaxy Discovered with JWST/NIRSpec+IFU
A Supermassive Black Hole in a Diminutive Ultracompact Dwarf Galaxy Discovered with JWST/NIRSpec+IFU Open
The integral-field unit mode of the Near-Infrared Spectrograph (NIRSpec+IFU) mounted on the James Webb Space Telescope has now enabled kinematic studies of smaller and less massive compact stellar systems in which to search for central mas…
View article: A Virgo Environmental Survey Tracing Ionised Gas Emission (VESTIGE)
A Virgo Environmental Survey Tracing Ionised Gas Emission (VESTIGE) Open
We reconstructed the star formation histories of seven massive ( M ⋆ ≳ 10 10 M ⊙ ) early-type galaxies (ETGs) in the Virgo cluster by analysing their spatially resolved stellar population (SP) properties including their ultraviolet (UV) an…
View article: FORECASTOR – II. Simulating galaxy surveys with the Cosmological Advanced Survey Telescope for Optical and UV Research
FORECASTOR – II. Simulating galaxy surveys with the Cosmological Advanced Survey Telescope for Optical and UV Research Open
The Cosmological Advanced Survey Telescope for Optical and UV Research (CASTOR) is a planned flagship space telescope, covering the blue-optical and UV part of the spectrum. Here, we introduce the CASTOR image simulator, a python GalSim pa…
View article: Probing the Diversity of Type Ia Supernova Light Curves in the Open Supernova Catalog
Probing the Diversity of Type Ia Supernova Light Curves in the Open Supernova Catalog Open
The ever-growing sample of observed supernovae (SNe) enhances our capacity for comprehensive SN population studies, providing a richer data set for understanding the diverse characteristics of Type Ia supernovae (SNe Ia) and possibly those…
View article: FORECASTOR. I. Finding Optics Requirements and Exposure Times for the Cosmological Advanced Survey Telescope for Optical and UV Research Mission
FORECASTOR. I. Finding Optics Requirements and Exposure Times for the Cosmological Advanced Survey Telescope for Optical and UV Research Mission Open
The Cosmological Advanced Survey Telescope for Optical and ultraviolet Research (CASTOR) is a proposed Canadian-led 1 m class space telescope that will carry out ultraviolet and blue optical wide-field imaging, spectroscopy, and photometry…
View article: FORECASTOR -- II. Simulating Galaxy Surveys with the Cosmological Advanced Survey Telescope for Optical and UV Research
FORECASTOR -- II. Simulating Galaxy Surveys with the Cosmological Advanced Survey Telescope for Optical and UV Research Open
The Cosmological Advanced Survey Telescope for Optical and UV Research (CASTOR) is a planned flagship space telescope, covering the blue-optical and UV part of the spectrum. Here we introduce the CASTOR image simulator, a Python GalSim pac…
View article: Explaining the high nitrogen abundances observed in high-z galaxies via population III stars of a few thousand solar masses
Explaining the high nitrogen abundances observed in high-z galaxies via population III stars of a few thousand solar masses Open
The chemical enrichment of the early Universe is a crucial element in the formation and evolution of galaxies, and Population III (PopIII) stars must play a vital role in this process. In this study, we examine metal enrichment from massiv…
View article: Explaining the high nitrogen abundances observed in high-<i>z</i> galaxies via population III stars of a few thousand solar masses
Explaining the high nitrogen abundances observed in high-<i>z</i> galaxies via population III stars of a few thousand solar masses Open
The chemical enrichment of the early Universe is a crucial element in the formation and evolution of galaxies, and Population III (Pop III) stars must play a vital role in this process. In this study, we examine metal enrichment from massi…
View article: Probing the Diversity of Type Ia Supernova Light Curves in the Open Supernova Catalog
Probing the Diversity of Type Ia Supernova Light Curves in the Open Supernova Catalog Open
The ever-growing sample of observed supernovae enhances our capacity for comprehensive supernova population studies, providing a richer dataset for understanding the diverse characteristics of Type Ia supernovae and possibly that of their …
View article: On the Formation and Interaction of Multiple Supermassive Stars in Cosmological Flows
On the Formation and Interaction of Multiple Supermassive Stars in Cosmological Flows Open
Supermassive primordial stars with masses exceeding ∼10 5 M ⊙ that form in atomically cooled halos are the leading candidates for the origin of high-redshift quasars at z > 6. Recent numerical simulations, however, find that multiple accre…
View article: From Stellar Death to Cosmic Revelations: Zooming in on Compact Objects, Relativistic Outflows and Supernova Remnants with AXIS
From Stellar Death to Cosmic Revelations: Zooming in on Compact Objects, Relativistic Outflows and Supernova Remnants with AXIS Open
Compact objects and supernova remnants provide nearby laboratories to probe the fate of stars after they die, and the way they impact, and are impacted by, their surrounding medium. The past five decades have significantly advanced our und…
View article: Critical accretion rates for rapidly growing massive Population III stars
Critical accretion rates for rapidly growing massive Population III stars Open
Efforts to understand the origin and growth of massive black holes observed in the early Universe have spurred significant interest in the evolution and fate of rapidly accreting primordial (metal-free) stars. Here, we investigate the evol…
View article: The Evolution of Population III and Extremely Metal-poor Binary Stars
The Evolution of Population III and Extremely Metal-poor Binary Stars Open
Numerical simulations have now shown that Population III (Pop III) stars can form in binaries and small clusters and that these stars can be in close proximity to each other. If so, they could be subject to binary interactions such as mass…
View article: Critical accretion rates for rapidly growing massive Population III stars
Critical accretion rates for rapidly growing massive Population III stars Open
Efforts to understand the origin and growth of massive black holes observed in the early Universe have spurred a strong interest in the evolution and fate of rapidly-accreting primordial (metal-free) stars. Here, we investigate the evoluti…
View article: The Evolution of Population III and Extremely Metal-Poor Binary Stars
The Evolution of Population III and Extremely Metal-Poor Binary Stars Open
Numerical simulations have now shown that Population III (Pop III) stars can form in binaries and small clusters and that these stars can be in close proximity to each other. If so, they could be subject to binary interactions such as mass…
View article: The Evolution of Population III and Extremely Metal-Poor Binary Stars
The Evolution of Population III and Extremely Metal-Poor Binary Stars Open
Numerical simulations have now shown that Population III (Pop III) stars can form in binaries and small clusters and that these stars can be in close proximity to each other. If so, they could be subject to binary interactions such as mass…
View article: 3D hydrodynamics simulations of core convection in supermassive main-sequence stars
3D hydrodynamics simulations of core convection in supermassive main-sequence stars Open
Supermassive stars are Population III stars with masses exceeding $10^4\, {\rm M}_{\odot }$ that could be the progenitors of the first supermassive black holes. Their interiors are in a regime where radiation pressure dominates the equatio…
View article: 3D hydrodynamics simulations of core convection in supermassive main-sequence stars
3D hydrodynamics simulations of core convection in supermassive main-sequence stars Open
Supermassive stars are Population III stars with masses exceeding $10^4\,M_{\odot}$ that could be the progenitors of the first supermassive black holes. Their interiors are in a regime where radiation pressure dominates the equation of sta…
View article: Modelling supermassive primordial stars with <scp>mesa</scp>
Modelling supermassive primordial stars with <span>mesa</span> Open
Supermassive stars forming at z ∼ 15–20 are one of the leading contenders for the origin of the first quasars, over 200 of which have now been discovered at z > 6. These stars likely form in pristine, atomically cooled haloes immersed i…
View article: Modeling Supermassive Primordial Stars with MESA
Modeling Supermassive Primordial Stars with MESA Open
Supermassive stars forming at $z \sim$ 15 - 20 are one of the leading contenders for the origin of the first quasars, over 200 of which have now been discovered at $z >$ 6. These stars likely form in pristine, atomically cooled haloes imme…
View article: On the Formation and Interaction of Multiple Supermassive Stars in Cosmological Flows
On the Formation and Interaction of Multiple Supermassive Stars in Cosmological Flows Open
Supermassive primordial stars with masses exceeding $\sim10^5\,M_{\odot}$ that form in atomically cooled halos are the leading candidates for the origin of high-redshift quasars with $z>6$. Recent numerical simulations, however, find that …
View article: Some First Stars Were Red: Detecting Signatures of Massive Population III Formation through Long-term Stochastic Color Variations
Some First Stars Were Red: Detecting Signatures of Massive Population III Formation through Long-term Stochastic Color Variations Open
Identifying stars formed in pristine environments (Population III) within the first billion years is vital to uncovering the earliest growth and chemical evolution of galaxies. Population III galaxies, however, are typically expected to be…
View article: Probing supermassive stars and massive black hole seeds through gravitational wave inspirals
Probing supermassive stars and massive black hole seeds through gravitational wave inspirals Open
We propose a novel source of gravitational wave (GW) emission: the inspirals of compact fragments inside primordial supermassive stars (SMSs). Such systems are thought to be an essential channel in the as-yet little understood formation of…
View article: The Formation of Very Massive Stars in Early Galaxies and Implications for Intermediate Mass Black Holes
The Formation of Very Massive Stars in Early Galaxies and Implications for Intermediate Mass Black Holes Open
We investigate the ab-initio formation of super-massive stars in a pristine atomic cooling halo. The halo is extracted from a larger self-consistent parent simulation. The halo remains metal-free and star formation is suppressed due to a c…
View article: LIN 358: a symbiotic binary accreting above the steady hydrogen fusion limit
LIN 358: a symbiotic binary accreting above the steady hydrogen fusion limit Open
Symbiotic binaries are long-period interacting binaries consisting of a white dwarf (WD) accreting material from a cool evolved giant star via stellar winds. In this paper, we study the symbiotic binary LIN 358 located in the Small Magella…
View article: Discovery of an ∼30-yr-duration post-nova pulsating supersoft source in the Large Magellanic Cloud
Discovery of an ∼30-yr-duration post-nova pulsating supersoft source in the Large Magellanic Cloud Open
Supersoft X-ray sources (SSS) have been identified as white dwarfs accreting from binary companions and undergoing nuclear burning of the accreted material on their surface. Although expected to be a relatively numerous population from bot…
View article: Supersoft X-ray nebulae in the Large Magellanic Cloud
Supersoft X-ray nebulae in the Large Magellanic Cloud Open
Supersoft X-rays sources (SSSs) have been proposed as potential Type Ia supernova (SN Ia) progenitors. If such objects are indeed persistently X-ray luminous and embedded in sufficiently dense interstellar medium (ISM), they will be surrou…
View article: The binary evolution of SAX J1808.4−3658: implications of an evolved donor star
The binary evolution of SAX J1808.4−3658: implications of an evolved donor star Open
Observations of the accretion powered millisecond pulsar SAX J1808.4−3658 have revealed an interesting binary evolution, with the orbit of the system expanding at an accelerated rate. We use the recent finding that the accreted fuel in SAX…