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We study the origin of misalignments between the stellar and star-forming gas components of simulated galaxies in the EAGLE simulations. We focus on galaxies with stellar masses $\geq 10^9$ M$_\odot$ at 0$\leq$z$\leq$1. We compare the…

Astrophysics of Galaxies · Physics 2024-05-07 Catalina I. Casanueva , Claudia del P. Lagos , Nelson D. Padilla , Thomas A. Davison

We study effects of AGN feedback outflows on multi-phase inter stellar medium (ISM) of the host galaxy. We argue that SMBH growth is dominated by accretion of dense cold clumps and filaments. AGN feedback outflows overtake the cold medium,…

Astrophysics of Galaxies · Physics 2015-06-17 Sergei Nayakshin

Effective stellar feedback is used in models of galaxy formation to drive realistic galaxy evolution. Models typically include energy injection from supernovae as the dominant form of stellar feedback, often in some form of sub-grid recipe.…

Astrophysics of Galaxies · Physics 2018-10-17 Andrew Emerick , Greg L. Bryan , Mordecai-Mark Mac Low

Star-forming galaxies like the Milky Way are surrounded by a hot gaseous halo at the virial temperature - the so-called galactic corona - that plays a fundamental role in their evolution. The interaction between the disc and the corona has…

Astrophysics of Galaxies · Physics 2023-07-26 Filippo Barbani , Raffaele Pascale , Federico Marinacci , Laura V. Sales , Mark Vogelsberger , Paul Torrey , Hui Li

We present simulations of galaxy formation, based on the GADGET-3 code, in which a sub-resolution model for star formation and stellar feedback is interfaced with a new model for AGN feedback. Our sub-resolution model describes a multiphase…

Using archival data from the Chandra X-ray telescope, we have measured the spatial extent of the hot interstellar gas in a sample of 49 nearby interacting galaxy pairs, mergers, and merger remnants. For systems with SFR > 1 M(sun)/yr, the…

Astrophysics of Galaxies · Physics 2019-10-09 Beverly J. Smith , Peter Wagstaff , Curtis Struck , Roberto Soria , Brianne Dunn , Douglas Swartz , Mark L. Giroux

We investigate the generation of galactic outflows by supernova feedback in the context of SPH cosmological simulations. We use a modified version of the code GADGET-2 which includes chemical enrichment and energy feedback by Supernova. We…

Interstellar (ISM) and circumgalactic mediums (CGM) around galaxies are linked to several physical processes that drive galaxy evolution. For example, the X-ray emission from the CGM gas around ellipticals has been linked to the AGN…

Astrophysics of Galaxies · Physics 2023-07-26 Aditi Vijayan , Bocheng Zhu , Miao Li , Feng Yuan , Luis C. Ho

We use nine different galaxy formation scenarios in ten cosmological simulation boxes from the EAGLE suite of {\Lambda}CDM hydrodynamical simulations to assess the impact of feedback mechanisms in galaxy formation and compare these to…

Observation shows that nebular emission, molecular gas, and young stars in giant galaxies are associated with rising X-ray bubbles inflated by radio jets launched from nuclear black holes. We propose a model where molecular clouds condense…

Astrophysics of Galaxies · Physics 2016-10-19 B. R. McNamara , H. R. Russell , P. E. J. Nulsen , M. T. Hogan , A. C. Fabian , F. Pulido , A. C. Edge

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 resolves the multi-phase interstellar medium down to 10 K. It forms…

Astrophysics of Galaxies · Physics 2021-02-26 Thales A. Gutcke , Rüdiger Pakmor , Thorsten Naab , Volker Springel

Cosmological simulations fail to reproduce realistic galaxy populations without energy injection from active galactic nuclei (AGN) into the interstellar medium (ISM) and circumgalactic medium (CGM); a process called `AGN feedback'.…

Astrophysics of Galaxies · Physics 2024-11-20 C. M. Harrison , A. Girdhar , S. R. Ward

We present a new framework to incorporate feedback from massive interacting binaries in simulations of star cluster formation. Our new feedback model adds binary stellar evolution to the cluster formation code Torch, and couples it in AMUSE…

We investigate the evolution of galaxy masses and star formation rates in the Evolution and Assembly of Galaxies and their Environment (EAGLE) simulations. These comprise a suite of hydrodynamical simulations in a $\Lambda$CDM cosmogony…

Energetic feedback from star clusters plays a pivotal role in shaping the dynamical evolution of giant molecular clouds (GMCs). To study the effects of stellar feedback on the star formation efficiency of the clouds and the dynamical…

Astrophysics of Galaxies · Physics 2019-05-29 Hui Li , Mark Vogelsberger , Federico Marinacci , Oleg Y. Gnedin

We present a novel method for including the effects of early (pre-supernova) feedback in simulations of galaxy evolution. Rather than building a model which attempts to match idealized, small-scale simulations or analytic approximations, we…

Astrophysics of Galaxies · Physics 2022-06-29 Benjamin W. Keller , J. M. Diederik Kruijssen , Mélanie Chevance

Two competing models, gravitational instability-driven transport and stellar feedback, have been proposed to interpret the high velocity dispersions observed in high-redshift galaxies. We study the major mechanisms to drive the turbulence…

Astrophysics of Galaxies · Physics 2021-07-07 Xiaoling Yu , Fuyan Bian , Mark R. Krumholz , Yong Shi , Songlin Li , Jianhang Chen

In recent years, the study of the Milky Way has significantly advanced due to extensive spectroscopic surveys of its stars, complemented by astroseismic and astrometric data. However, it remains disjoint from recent advancements in…

Astrophysics of Galaxies · Physics 2024-05-30 Piyush Sharda , Yuan-Sen Ting , Neige Frankel

Star clusters host the massive stars responsible for feedback in star-forming galaxies. Stellar feedback shapes the interstellar medium (ISM), affecting the formation of future star clusters. To self-consistently capture the interplay…

We present hydrodynamic simulations of a major merger of disk galaxies, and study the ISM dynamics and star formation properties. High spatial and mass resolutions of 12pc and 4x10^4 M_sol allow to resolve cold and turbulent gas clouds…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-19 Romain Teyssier , Damien Chapon , Frederic Bournaud