311 citations · 889 across the 21 of their papers we have counts for
24 papers
LYRA: The formation and growth of nuclear star clusters in dwarf galaxies
Joaquin Sureda, Azadeh Fattahi, Sownak Bose +5
Nuclear star clusters (NSCs) are dense massive star clusters ubiquitous in galactic centres across various mass regimes, present in up to per cent of dwarf galaxies with $…
Extreme Enrichment at Cosmic Dawn: Three FeII-Strong Quasars at z > 6 from the JWST Aether survey
Anniek J. Gloudemans, Emanuele Paolo Farina, Roberto Decarli +22
We present three outliers on the quasar main sequence at z>6, as revealed by JWST/NIRSpec IFU observations from the Aether survey, a program targeting ~200 quasars at cosmic dawn.…
To be lensed or not to be lensed: on the nature of the alleged high-z lensed quasars J0109-5424 and P170+20
Aurora Mata-Sanchez, Emanuele P. Farina, Anniek J. Gloudemans +17
We present a detailed multi-wavelength analysis of two gravitationally lensed z>6 quasar candidates: J0109-5424 and P170+20. Using JWST/NIRSpec near-infrared data from the Aether s…
LYRA ultra-faints: The emergence of faint dwarf galaxies in the presence of an early Lyman-Werner background
Shaun T. Brown, Azadeh Fattahi, Thales A. Gutcke +6
We present a suite of zoom-in cosmological hydrodynamical simulations of dwarf galaxies using the LYRA galaxy formation model with an extremely high mass resolution of $4\, \mathrm…
Co-evolution of baryons and dark matter halos of LYRA dwarf galaxies
Joaquin Sureda, Shaun T. Brown, Azadeh Fattahi +4
We use the extremely high-resolution () LYRA cosmological galaxy formation simulations of six dwarf galaxies with at…
Self-interacting dark matter in the center of a Local Group dwarf galaxy and its satellites
Thales A. Gutcke, Giulia Despali, Stephanie O'Neil +3
We present a detailed comparison of a Local Group dwarf galaxy analogue evolved in two cosmological models: the standard CDM and a self-interacting dark matter (SIDM) model with…
The Entangling of Supernova Feedback Impacts with Coarsening Simulation Resolution
Eric Zhang, Laura V. Sales, Thales A. Gutcke +11
It is often understood that supernova (SN) feedback in galaxies is responsible for regulating star formation (SF) and generating gaseous outflows. However, a detailed look at the s…
Bursty Star Formation in Dwarfs is Sensitive to Numerical Choices in Supernova Feedback Models
Eric Zhang, Laura V. Sales, Federico Marinacci +6
Simulations of galaxy formation are mostly unable to resolve the energy-conserving phase of individual supernova events, having to resort to subgrid models to distribute the energy…
Low-mass globular clusters from stripped dark matter halos
Thales A. Gutcke
The origin and formation of globular clusters has remained a mystery. We present a formation scenario for ancient globular cluster-like objects that form in ultra-high resolution s…
LYRA III: The smallest Reionization survivors
Thales A. Gutcke, Christoph Pfrommer, Greg L. Bryan +3
The dividing line between galaxies that are quenched by reionization ("relics") and galaxies that survive reionization (i.e. continue forming stars) is commonly discussed in terms…
The X-shooter/ALMA Sample of Quasars in the Epoch of Reionization. II. Black Hole Masses, Eddington Ratios, and the Formation of the First Quasars
Emanuele Paolo Farina, Jan-Torge Schindler, Fabian Walter +20
We present measurements of black hole masses and Eddington ratios for a sample of 38 bright (M < -24.4 mag) quasars at 5.8 < z < 7.5, derived from VLT/X-shooter near-IR sp…
LYRA II: Cosmological dwarf galaxy formation with inhomogeneous Population III enrichment
Thales A. Gutcke, Rüdiger Pakmor, Thorsten Naab +1
We present the simulation of a halo mass cosmological dwarf galaxy run to at 4 solar mass gas resolution with resolved supernova feedback. We compare th…
LYRA I: Simulating the multi-phase ISM of a dwarf galaxy with variable energy supernovae from individual stars
Thales A. Gutcke, Rüdiger Pakmor, Thorsten Naab +1
We introduce the LYRA project, a new high resolution galaxy formation model built within the framework of the cosmological hydro-dynamical moving mesh code AREPO. The model resolve…
The REQUIEM Survey I: A Search for Extended Ly-Alpha Nebular Emission Around 31 z>5.7 Quasars
Emanuele Paolo Farina, Fabrizio Arrigoni-Battaia, Tiago Costa +19
The discovery of quasars few hundred megayears after the Big Bang represents a major challenge to our understanding of black holes and galaxy formation and evolution. Their luminos…
On the Optimal Choice of Nucleosynthetic Yields, IMF and Number of SNe Ia for Chemical Evolution Modelling
Oliver Philcox, Jan Rybizki, Thales Gutcke
To fully harvest the rich library of stellar elemental abundance data available, we require reliable models that facilitate our interpretation of them. Galactic chemical evolution…
Simulating a metallicity-dependent initial mass function: Consequences for feedback and chemical abundances
Thales A. Gutcke, Volker Springel
Observational and theoretical arguments increasingly suggest that the initial mass function (IMF) of stars may depend systematically on environment, yet most galaxy formation model…
Quenching vs. Quiescence: forming realistic massive ellipticals with a simple starvation model
Thales A. Gutcke, Andrea V. Macciò, Aaron A. Dutton +1
The decrease in star formation (SF) and the morphological change necessary to produce the elliptical galaxy population are commonly ascribed to a sudden quenching event, whic…
NIHAO XII: galactic uniformity in a ΛCDM universe
Aaron A. Dutton, Aura Obreja, Liang Wang +7
We use a sample of 83 high-resolution cosmological zoom-in simulations and a semi-analytic model (SAM) to study the stochasticity of galaxy formation in haloes ranging from dwarf t…
A High Resolution Spectrograph for the 72 cm Waltz Telescope at Landessternwarte, Heidelberg
M. Tala, P. Heeren, M. Grill +14
The Waltz Spectrograph is a fiber-fed high-resolution échelle spectrograph for the 72 cm Waltz Telescope at the Landessternwarte, Heidelberg. It uses a 31.6 lines/mm 63.5…
NIHAO VIII: Circum-galactic medium and outflows - The puzzles of HI and OVI gas distributions
Thales A. Gutcke, Greg S. Stinson, Andrea V. Macciò +2
We study the hot and cold circum-galactic medium (CGM) of 86 galaxies of the cosmological, hydrodynamical simulation suite NIHAO. NIHAO allows a study of how the CGM varies a…
NIHAO VII: Predictions for the galactic baryon budget in dwarf to Milky Way mass haloes
Liang Wang, Aaron A. Dutton, Gregory S. Stinson +3
We use the NIHAO galaxy formation simulations to make predictions for the baryonic budget in present day galaxies ranging from dwarf to Milky Way masses. The sample is made of 88 i…
The response of dark matter haloes to elliptical galaxy formation: a new test for quenching scenarios
Aaron A. Dutton, Andrea V. Macciò, Gregory S. Stinson +3
We use cosmological hydrodynamical zoom-in simulations with the SPH code gasoline of four haloes of mass M_{200} \sim 10^{13}\Msun to study the response of the dark matter to ellip…
NIHAO IV: Core creation and destruction in dark matter density profiles across cosmic time
Edouard Tollet, Andrea V. Macciò, Aaron A. Dutton +10
We use the NIHAO simulations to investigate the effects of baryonic physics on the time evolution of Dark Matter central density profiles. The sample is made of indepe…
The Star Formation and AGN luminosity relation: Predictions from a semi-analytical model
Thales A. Gutcke, Nikos Fanidakis, Andrea V. Macciò +1
In a Universe where AGN feedback regulates star formation in massive galaxies, a strong correlation between these two quantities is expected. If the gas causing star formation is a…