53 citations · 263 across the 35 of their papers we have counts for
21 papers · 1 filter
The dark side of early galaxies: uncovers dark-matter fractions at
A. Lola Danhaive, Sandro Tacchella, Andrew J. Bunker +15
JWST/NIRCam slitless spectroscopy enables dynamical mass measurements for typical star-forming galaxies only a billion years after the Big Bang. We model the H morpho-kinematics…
Modelling the nebular emission of galaxies across cosmic time with COLT
William McClymont, Aaron Smith, Sandro Tacchella
Extragalactic nebular emission has long been a workhorse probe of the processes driving galaxy evolution, but the richness of JWST spectroscopy has shifted the bottleneck from data…
Beyond the stars: Linking H sizes, kinematics, and star formation in galaxies at with JWST grism surveys and
A. Lola Danhaive, Sandro Tacchella, William McClymont +15
Understanding how galaxies assemble their mass during the first billion years of cosmic time is a central goal of extragalactic astrophysics, yet joint constraints on their sizes a…
Metallicity Gradients in Modern Cosmological Simulations II: The Role of Bursty Versus Smooth Feedback at High-Redshift
Alex M. Garcia, Paul Torrey, Aniket Bhagwat +22
The distribution of gas-phase metals within galaxies encodes the impact of stellar feedback on galactic evolution. At high-redshift, when galaxies are rapidly assembling, feedback-…
The THESAN-ZOOM project: The Hidden Neighbours of OI Absorbers during Reionization
Giulia Pruto, Laura Keating, Rahul Kannan +9
Metal absorbers represent a powerful probe of galaxy feedback and reionization, as highlighted by both observational and theoretical results showing an increased abundance of low-i…
JADES: the chemical enrichment pattern of distant galaxies -- enhancement, silicon depletion, and iron enhancement
Yuki Isobe, Roberto Maiolino, Xihan Ji +26
We present gas-phase abundances of carbon (C), -elements (O, Ne, Si, and Ar) and iron (Fe) obtained from stacked spectra of high- star-forming galaxies with the deep Near Inf…
The THESAN-ZOOM project: Mystery N/O more -- uncovering the origin of peculiar chemical abundances and a not-so-fundamental metallicity relation at
William McClymont, Sandro Tacchella, Aaron Smith +15
We present an analysis of metallicities and chemical abundances at in the THESAN-ZOOM simulations. We find that smoothly curved gas-phase and stellar mass-metallicity rela…
Before its time: a remarkably evolved protocluster core at z=7.88
Callum Witten, Pascal A. Oesch, William McClymont +11
Protoclusters represent the most extreme environments in the very early Universe. They form from large-scale dark matter overdensities, harbouring an overabundance of galaxies fed…
Overmassive black holes in the early Universe can be explained by gas-rich, dark matter-dominated galaxies
William McClymont, Sandro Tacchella, Xihan Ji +12
JWST has revealed the apparent evolution of the black hole (BH)-stellar mass (-$M_\rm{\ast}$) relation in the early Universe, while remaining consistent with the BH-…
The THESAN-ZOOM project: Star formation efficiency from giant molecular clouds to galactic scale in high-redshift starbursts
Zihao Wang, Xuejian Shen, Mark Vogelsberger +12
Star formation in galaxies is inherently complex, involving the interplay of physical processes over a hierarchy of spatial scales. In this work, we investigate the connection betw…
Connecting JWST discovered N/O-enhanced galaxies to globular clusters: Evidence from chemical imprints
Xihan Ji, Vasily Belokurov, Roberto Maiolino +5
Recent JWST observations have revealed a growing population of galaxies at with elevated nitrogen-to-oxygen ratios. These "N/O-enhanced" galaxies (NOEGs) exhibit near- to sup…
When relics were made: vigorous stellar rotation and low dark matter content in the massive ultra-compact galaxy GS-9209 at z=4.66
Robert G. Pascalau, Francesco D'Eugenio, Sandro Tacchella +24
JWST uncovered a large number of massive quiescent galaxies (MQGs) at , which theoretical models struggle to reproduce. Explaining the number density of such objects requires…
The dawn of disks: unveiling the turbulent ionised gas kinematics of the galaxy population at with JWST/NIRCam grism spectroscopy
A. Lola Danhaive, Sandro Tacchella, Hannah Übler +27
Recent studies of gas kinematics at high redshift have reported disky systems which appear to challenge models of galaxy formation, but it is unclear whether they are representativ…
The THESAN-ZOOM project: Star-formation efficiencies in high-redshift galaxies
Xuejian Shen, Rahul Kannan, Ewald Puchwein +10
Recent JWST observations hint at unexpectedly intense cosmic star-formation in the early Universe, often attributed to enhanced star-formation efficiencies (SFEs). Here, we analyze…
BlackTHUNDER strikes twice: rest-frame Balmer-line absorption and high Eddington accretion rate in a Little Red Dot at
Francesco D'Eugenio, Roberto Maiolino, Michele Perna +29
JWST has revealed a population of 'Little Red Dots' (LRDs): compact, red objects at redshifts z=2-9 with 'v'-shaped spectral energy distributions, broad permitted lines, and, often…
The THESAN-ZOOM project: central starbursts and inside-out quenching govern galaxy sizes in the early Universe
William McClymont, Sandro Tacchella, Aaron Smith +9
We explore the evolution of galaxy sizes at high redshift () using the high-resolution THESAN-ZOOM radiation-hydrodynamics simulations, focusing on the mass range of $1…
The THESAN-ZOOM project: Population III star formation continues until the end of reionization
Oliver Zier, Rahul Kannan, Aaron Smith +8
Population III (Pop III) stars are the first stars in the Universe, forming from pristine, metal-free gas and marking the end of the cosmic dark ages. Their formation rate is expec…
The THESAN-ZOOM project: Long-term imprints of external reionization on galaxy evolution
Oliver Zier, Rahul Kannan, Aaron Smith +8
We investigate the impact of ionizing external ultraviolet (UV) radiation on low-mass haloes () at high redshift using baryonic resolution zoom-…
The THESAN-ZOOM project: Burst, quench, repeat -- unveiling the evolution of high-redshift galaxies along the star-forming main sequence
William McClymont, Sandro Tacchella, Aaron Smith +10
Characterizing the evolution of the star-forming main sequence (SFMS) at high redshift is crucial to contextualize the observed extreme properties of galaxies in the early Universe…
Introducing the THESAN-ZOOM project: radiation-hydrodynamic simulations of high-redshift galaxies with a multi-phase interstellar medium
Rahul Kannan, Ewald Puchwein, Aaron Smith +11
We introduce the THESAN-ZOOM project, a comprehensive suite of high-resolution zoom-in simulations of high-redshift () galaxies selected from the THESAN simulation volume…
Constraining the major merger history of galaxies using JADES: dominant in-situ star formation
Dávid Puskás, Sandro Tacchella, Charlotte Simmonds +23
We present a comprehensive analysis of galaxy close-pair fractions and major merger rates to evaluate the importance of mergers in the hierarchical growth of galaxies over cosmic t…