Kaley Brauer
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View article: <scp>Aeos</scp>: The Impact of Population III Initial Mass Function and Star-by-star Models in Galaxy Simulations
<span>Aeos</span>: The Impact of Population III Initial Mass Function and Star-by-star Models in Galaxy Simulations Open
We explore the effect of variations in the Population III initial mass function (IMF) and star-by-star feedback on early galaxy formation and evolution using the A eos simulations. We compare simulations with two different Population III I…
View article: Shape modelling contact binaries 2024 ON and 2000 RS11 with ground-based radar
Shape modelling contact binaries 2024 ON and 2000 RS11 with ground-based radar Open
IntroductionBilobed objects (contact binaries) appear in both asteroid and comet populations with a bimodal mass distribution and bifurcated shape. They are common in both near-Earth asteroid populations, estimated from radar imaging to be…
View article: AEOS: Transport of Metals from Minihalos following Population III Stellar Feedback
AEOS: Transport of Metals from Minihalos following Population III Stellar Feedback Open
We investigate how stellar feedback from the first stars (Population III) distributes metals through the interstellar and intergalactic medium using the star-by-star cosmological hydrodynamics simulation, A eos . We find that energy inject…
View article: AEOS: Star-by-star Cosmological Simulations of Early Chemical Enrichment and Galaxy Formation
AEOS: Star-by-star Cosmological Simulations of Early Chemical Enrichment and Galaxy Formation Open
The A eos project introduces a series of high-resolution cosmological simulations that model star-by-star chemical enrichment and galaxy formation in the early Universe, achieving 1 pc resolution. These simulations capture the complexities…
View article: Aeos: Transport of Metals from Minihalos following Population III Stellar Feedback
Aeos: Transport of Metals from Minihalos following Population III Stellar Feedback Open
We investigate how stellar feedback from the first stars (Population III) distributes metals through the interstellar and intergalactic medium using the star-by-star cosmological hydrodynamics simulation, Aeos. We find that energy injected…
View article: AEOS: Star-by-Star Cosmological Simulations of Early Chemical Enrichment and Galaxy Formation
AEOS: Star-by-Star Cosmological Simulations of Early Chemical Enrichment and Galaxy Formation Open
The AEOS project introduces a series of high-resolution cosmological simulations that model star-by-star chemical enrichment and galaxy formation in the early Universe, achieving 1 pc resolution. These simulations capture the complexities …
View article: Enrichment by Extragalactic First Stars in the Large Magellanic Cloud
Enrichment by Extragalactic First Stars in the Large Magellanic Cloud Open
The Large Magellanic Cloud (LMC) is the Milky Way's most massive satellite galaxy, which only recently (~2 billion years ago) fell into our Galaxy. Since stellar atmospheres preserve their natal cloud's composition, the LMC's recent infall…
View article: Chemical abundances of the Typhon stellar stream
Chemical abundances of the Typhon stellar stream Open
We present the first high-resolution chemical abundances of seven stars in the recently discovered high-energy stream Typhon. Typhon stars have apocentres r ≳ 100 kpc, making this the first detailed chemical picture of the Milky Way’s very…
View article: The Atari Disk, a Metal-poor Stellar Population in the Disk System of the Milky Way
The Atari Disk, a Metal-poor Stellar Population in the Disk System of the Milky Way Open
We have developed a chemodynamical approach to assign 36,010 metal-poor SkyMapper stars to various Galactic stellar populations. Using two independent techniques (velocity and action space behavior), Gaia EDR3 astrometry, and photometric m…
View article: Possibilities and Limitations of Kinematically Identifying Stars from Accreted Ultra-faint Dwarf Galaxies
Possibilities and Limitations of Kinematically Identifying Stars from Accreted Ultra-faint Dwarf Galaxies Open
The Milky Way has accreted many ultra-faint dwarf galaxies (UFDs), and stars from these galaxies can be found throughout our Galaxy today. Studying these stars provides insight into galaxy formation and early chemical enrichment, but ident…
View article: Chemical Abundances of the Typhon Stellar Stream
Chemical Abundances of the Typhon Stellar Stream Open
We present the first high-resolution chemical abundances of seven stars in the recently discovered high-energy stream Typhon. Typhon stars have apocenters >100 kpc, making this the first detailed chemical picture of the Milky Way's very di…
View article: Possibilities and Limitations of Kinematically Identifying Stars from Accreted Ultra-Faint Dwarf Galaxies
Possibilities and Limitations of Kinematically Identifying Stars from Accreted Ultra-Faint Dwarf Galaxies Open
The Milky Way has accreted many ultra-faint dwarf galaxies (UFDs), and stars from these galaxies can be found throughout our Galaxy today. Studying these stars provides insight into galaxy formation and early chemical enrichment, but ident…
View article: "I'll Finish It This Week" And Other Lies
"I'll Finish It This Week" And Other Lies Open
A small group of postdocs, graduate students, and undergraduates inadvertently formed a longitudinal study contrasting expected productivity levels with actual productivity levels. Over the last nine months, our group self-reported 559 tas…
View article: Kinematics of highly r-process-enhanced halo stars: Evidence for origins in now-destroyed ultra-faint dwarf galaxies
Kinematics of highly r-process-enhanced halo stars: Evidence for origins in now-destroyed ultra-faint dwarf galaxies Open
The Milky Way’s stellar halo preserves a fossil record of smaller dwarf galaxies that merged with the Milky Way throughout its formation history. Currently, though, we lack reliable ways to identify which halo stars originated in which dwa…
View article: The Origin of r-process Enhanced Metal-poor Halo Stars In Now-destroyed Ultra-faint Dwarf Galaxies
The Origin of r-process Enhanced Metal-poor Halo Stars In Now-destroyed Ultra-faint Dwarf Galaxies Open
The highly r -process-enhanced (r-II) metal-poor halo stars we observe today could play a key role in understanding early ultra-faint dwarf galaxies (UFDs), the smallest building blocks of the Milky Way. If a significant fraction of metal-…
View article: Phase-resolved spectroscopy of the low-mass X-ray binary V801 Ara
Phase-resolved spectroscopy of the low-mass X-ray binary V801 Ara Open
We present phase-resolved optical spectra of the low mass X-ray binary system\nV801 Ara. The spectra, obtained in 2014 with IMACS on the Magellan/Baade\ntelescope at Las Campanas Observatory, cover the full binary orbit of 3.8\nhours. They…