Theoretical challenges in galaxy formation

T Naab, JP Ostriker - Annual review of astronomy and …, 2017‏ - annualreviews.org
Numerical simulations have become a major tool for understanding galaxy formation and
evolution. Over the decades the field has made significant progress. It is now possible to …

Star formation in the Milky Way and nearby galaxies

RC Kennicutt Jr, NJ Evans - Annual Review of Astronomy and …, 2012‏ - annualreviews.org
We review progress over the past decade in observations of large-scale star formation, with
a focus on the interface between extragalactic and Galactic studies. Methods of measuring …

FIRE-2 simulations: physics versus numerics in galaxy formation

PF Hopkins, A Wetzel, D Kereš… - Monthly Notices of …, 2018‏ - academic.oup.com
ABSTRACT The Feedback In Realistic Environments (FIRE) project explores feedback in
cosmological galaxy formation simulations. Previous FIRE simulations used an identical …

What causes the formation of discs and end of bursty star formation?

PF Hopkins, AB Gurvich, X Shen… - Monthly Notices of …, 2023‏ - academic.oup.com
As they grow, galaxies can transition from irregular/spheroidal with 'bursty'star formation
histories (SFHs), to discy with smooth SFHs. But even in simulations, the direct physical …

Fast and inefficient star formation due to short-lived molecular clouds and rapid feedback

JMD Kruijssen, A Schruba, M Chevance, SN Longmore… - Nature, 2019‏ - nature.com
The physics of star formation and the deposition of mass, momentum and energy into the
interstellar medium by massive stars ('feedback') are the main uncertainties in modern …

Pressure-regulated, feedback-modulated star formation in disk galaxies

EC Ostriker, CG Kim - The Astrophysical Journal, 2022‏ - iopscience.iop.org
The star formation rate (SFR) in galactic disks depends on both the quantity of the available
interstellar medium (ISM) gas and its physical state. Conversely, the ISM's physical state …

Cloud-scale molecular gas properties in 15 nearby galaxies

J Sun, AK Leroy, A Schruba… - The Astrophysical …, 2018‏ - iopscience.iop.org
We measure the velocity dispersion, σ, and surface density, Σ, of the molecular gas in
nearby galaxies from CO spectral line cubes with spatial resolution 45–120 pc, matched to …

A unified model for galactic discs: star formation, turbulence driving, and mass transport

MR Krumholz, B Burkhart, JC Forbes… - Monthly Notices of the …, 2018‏ - academic.oup.com
We introduce a new model for the structure and evolution of the gas in galactic discs. In the
model the gas is in vertical pressure and energy balance. Star formation feedback injects …

Dynamical equilibrium in the molecular ISM in 28 nearby star-forming galaxies

J Sun, AK Leroy, EC Ostriker, A Hughes… - The Astrophysical …, 2020‏ - iopscience.iop.org
We compare the observed turbulent pressure in molecular gas, P turb, to the required
pressure for the interstellar gas to stay in equilibrium in the gravitational potential of a …

Momentum injection by supernovae in the interstellar medium

CG Kim, EC Ostriker - The Astrophysical Journal, 2015‏ - iopscience.iop.org
Supernova (SN) explosions deposit prodigious energy and momentum in their
environments, with the former regulating multiphase thermal structure and the latter …