activity
20102026
most citedThe stellar mass assembly of galaxies in the Illustris simulation: growth by mergers and the spatial distribution of accreted stars

478 citations · 1.7k across the 36 of their papers we have counts for

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Showing astro-ph.GAShow all

31 papers · 1 filter

astro-ph.GA2026

Old Disks Die Hard: How Does AGN Feedback Suppress Disk Formation in Milky Way Mass Galaxies?

Patricia Fofie, James S. Bullock, Sarah Wellons +3

The connection between a galaxy's visual shape and its star formation rate is one of the oldest established trends in galaxy evolution, yet the origin of this trend remains unsettl…

astro-ph.GA2026

It's More Complicated Than You Think: A Forward Model to Infer the Recent Star Formation History, Bursty or Not, of Galaxy Populations

Emilie Burnham, Bingjie Wang, Joel Leja +14

Observations of the early Universe (z > 4) with the James Webb Space Telescope reveal galaxy populations with a wide range of intrinsic luminosities and colors. Bursty star formati…

astro-ph.GA2025★ 1 cited

Effects of Varied Cosmic Ray Feedback from AGN on Massive Galaxy Properties

Charvi Goyal, Sam B. Ponnada, Philip F. Hopkins +3

Active galactic nuclei (AGN) provide energetic feedback necessary to `turn off' star formation in high-mass galaxies (M 10 M, $10.4 \leq \log(…

astro-ph.GA2025

The role of galactic winds fueling central starbursts and quasars in the FIRE cosmological simulations

Jonathan Mercedes-Feliz, Daniel Anglés-Alcázar, Boon Kiat Oh +7

Central starbursts and Active Galactic Nuclei (AGN) are thought to be fueled by either galaxy interactions or secular processes in gravitationally unstable discs. We employ cosmolo…

astro-ph.GA2025

The Nature of Post-Starburst Galaxies: Real Deal or Masquerading Impostors?

Elia Cenci, Robert Feldmann, Sarah Wellons +7

Post-starburst galaxies (PSBs) are a population of galaxies with spectral and photometric features indicative of rapid quenching following a recent starburst. The origin and nature…

astro-ph.GA2025★ 1 cited

Second public data release of the FIRE-2 cosmological zoom-in simulations of galaxy formation

Andrew Wetzel, Jenna Samuel, Pratik J. Gandhi +34

We describe the second data release (DR2) of the FIRE-2 cosmological zoom-in simulations of galaxy formation, from the Feedback In Realistic Environments (FIRE) project, available…

astro-ph.GA2025★ 10 cited

Zooming In On The Multi-Phase Structure of Magnetically-Dominated Quasar Disks: Radiation From Torus to ISCO Across Accretion Rates

Philip F. Hopkins, Kung-Yi Su, Norman Murray +12

Recent radiation-thermochemical-magnetohydrodynamic simulations resolved formation of quasar accretion disks from cosmological scales down to ~300 gravitational radii , argu…

astro-ph.GA2024

Hooks, Lines, and Sinkers: How AGN Feedback and Cosmic-Ray Transport shape the Far Infrared-Radio Correlation of Galaxies

Sam B. Ponnada, Rachel K. Cochrane, Philip F. Hopkins +7

The far-infrared (FIR) - radio correlation (FRC) is one of the most promising empirical constraints on the role of cosmic-rays (CRs) and magnetic fields (\textbf{B}) in galaxy form…

astro-ph.GA2024★ 7 cited

Diverse dark matter profiles in FIRE dwarfs: black holes, cosmic rays and the cusp-core enigma

Sophie Koudmani, Douglas Rennehan, Rachel S. Somerville +5

Dwarf galaxies have historically posed challenges to the cold dark matter (CDM) model and, while many of the so-called 'dwarf galaxy problems' have been mitigated by incorporating…

astro-ph.GA2024★ 8 cited

Confronting the Diversity Problem: The Limits of Galaxy Rotation Curves as a tool to Understand Dark Matter Profiles

Isabel S. Sands, Philip F. Hopkins, Xuejian Shen +9

While galaxy rotation curves provide one of the most powerful methods for measuring dark matter profiles in the inner regions of rotation-supported galaxies, at the dwarf scale the…

astro-ph.GA2023

Dense stellar clump formation driven by strong quasar winds in the FIRE cosmological hydrodynamic simulations

Jonathan Mercedes-Feliz, Daniel Anglés-Alcázar, Boon Kiat Oh +9

We investigate the formation of dense stellar clumps in a suite of high-resolution cosmological zoom-in simulations of a massive, star forming galaxy at under the presen…

astro-ph.GA2023★ 4 cited

Effects of multi-channel AGN feedback in FIRE cosmological simulations of massive galaxies

Lindsey Byrne, Claude-André Faucher-Giguère, Sarah Wellons +6

Feedback from supermassive black holes is believed to be a critical driver of the observed color bimodality of galaxies above the Milky Way mass scale. AGN feedback has been modele…

astro-ph.GA2023★ 50 cited

FORGE'd in FIRE: Resolving the End of Star Formation and Structure of AGN Accretion Disks from Cosmological Initial Conditions

Philip F. Hopkins, Michael Y. Grudic, Kung-Yi Su +8

It has recently become possible to zoom-in from cosmological to sub-pc scales in galaxy simulations to follow accretion onto supermassive black holes (SMBHs). However, at some poin…

astro-ph.GA2023★ 32 cited

The First Quiescent Galaxies in TNG300

Abigail I. Hartley, Erica J. Nelson, Katherine A. Suess +12

We identify the first quiescent galaxies in TNG300, the largest volume of the IllustrisTNG cosmological simulation suite, and explore their quenching processes and time evolution t…

astro-ph.GA2023★ 30 cited

The impact of AGN-driven winds on physical and observable galaxy sizes

R. K. Cochrane, D. Anglés-Alcázar, J. Mercedes-Feliz +9

Without AGN feedback, simulated massive, star-forming galaxies become too compact relative to observed galaxies at z<2. In this paper, we perform high-resolution re-simulations of…

astro-ph.GA2023★ 40 cited

Local positive feedback in the overall negative: the impact of quasar winds on star formation in the FIRE cosmological simulations

Jonathan Mercedes-Feliz, Daniel Anglés-Alcázar, Christopher C. Hayward +10

Negative feedback from accreting supermassive black holes is regarded as a key ingredient in suppressing star formation and quenching massive galaxies. However, several models and…

astro-ph.GA2022★ 32 cited

Stellar feedback-regulated black hole growth: driving factors from nuclear to halo scales

Lindsey Byrne, Claude-André Faucher-Giguère, Jonathan Stern +4

Several recent simulations of galaxy formation predict two main phases of supermassive black hole (BH) accretion: an early, highly intermittent phase (during which BHs are under-ma…

astro-ph.GA2022

Exploring supermassive black hole physics and galaxy quenching across halo mass in FIRE cosmological zoom simulations

Sarah Wellons, Claude-André Faucher-Giguère, Philip F. Hopkins +7

Feedback from accreting supermassive black holes (SMBHs) is thought to be a primary driver of quenching in massive galaxies, but the best way to implement SMBH physics into galaxy…

astro-ph.GA2021★ 11 cited

Running Late: Testing Delayed Supermassive Black Hole Growth Models Against the Quasar Luminosity Function

Megan Taylor Tillman, Sarah Wellons, Claude-André Faucher-Giguère +2

Observations of massive galaxies at low redshift have revealed approximately linear scaling relations between the mass of a supermassive black hole (SMBH) and properties of its hos…

astro-ph.GA2021★ 2 cited

Why do Black Holes Trace Bulges (& Central Surface Densities), Instead of Galaxies as a Whole?

Philip F. Hopkins, Sarah Wellons, Daniel Angles-Alcazar +2

Previous studies of fueling black holes (BHs) in galactic nuclei have argued (on scales ~0.01-1000pc) accretion is dynamical with inflow rates $\dot{M}\simη\,M_{\rm gas}/t_{\rm dyn…

astro-ph.GA2021★ 82 cited

Which AGN Jets Quench Star Formation in Massive Galaxies?

Kung-Yi Su, Philip F. Hopkins, Greg L. Bryan +12

Without additional heating, radiative cooling of gas in the halos of massive galaxies (Milky Way and above) produces cold gas or stars in excess of that observed. Previous work sug…

astro-ph.GA2020★ 25 cited

Recent Star-formation in a Massive Slowly-Quenched Lensed Quiescent Galaxy at z=1.88

Mohammad Akhshik, Katherine E. Whitaker, Joel Leja +10

In this letter, we reconstruct the formation pathway of MRG-S0851, a massive, , strongly lensed, red, galaxy at . While the global p…

astro-ph.GA2020★ 23 cited

REQUIEM-2D: Spatially Resolved Stellar Populations from HST 2D Grism Spectroscopy

Mohammad Akhshik, Katherine E. Whitaker, Gabriel Brammer +13

We present a novel Bayesian methodology to jointly model photometry and deep Hubble Space Telescope (HST) 2d grism spectroscopy of high-redshift galaxies. Our requiem2d code measur…

astro-ph.GA2020★ 52 cited

Pressure balance in the multiphase ISM of cosmologically simulated disk galaxies

Alexander B. Gurvich, Claude-André Faucher-Giguère, Alexander J. Richings +13

Pressure balance plays a central role in models of the interstellar medium (ISM), but whether and how pressure balance is realized in a realistic multiphase ISM is not yet well und…