Molecular Gas and the Star-Formation Process on Cloud Scales in Nearby Galaxies

E Schinnerer, AK Leroy - Annual Review of Astronomy and …, 2024‏ - annualreviews.org
Observations that resolve nearby galaxies into individual regions across multiple phases of
the gas–star formation feedback “matter cycle” have provided a sharp new view of molecular …

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 …

Molecular cloud populations in the context of their host galaxy environments: a multiwavelength perspective

J Sun, AK Leroy, E Rosolowsky, A Hughes… - The Astronomical …, 2022‏ - iopscience.iop.org
We present a rich, multiwavelength, multiscale database built around the PHANGS–ALMA
CO (2− 1) survey and ancillary data. We use this database to present the distributions of …

Dust, CO, and [C i]: cross-calibration of molecular gas mass tracers in metal-rich galaxies across cosmic time

L Dunne, SJ Maddox, PP Papadopoulos… - Monthly Notices of …, 2022‏ - academic.oup.com
We present a self-consistent cross-calibration of the three main molecular gas mass tracers
in galaxies, namely the 12CO (1–0),[C i](3 P 1–3 P 0) lines, and the submm dust continuum …

Low-J CO line ratios from single-dish CO map** surveys and PHANGS-ALMA

AK Leroy, E Rosolowsky, A Usero… - The Astrophysical …, 2022‏ - iopscience.iop.org
We measure the low-J CO line ratios R 21≡ CO (2–1)/CO (1–0), R 32≡ CO (3–2)/CO (2–1),
and R 31≡ CO (3–2)/CO (1–0) using whole-disk CO maps of nearby galaxies. We draw CO …

SILCC VI–Multiphase ISM structure, stellar clustering, and outflows with supernovae, stellar winds, ionizing radiation, and cosmic rays

TE Rathjen, T Naab, P Girichidis… - Monthly Notices of …, 2021‏ - academic.oup.com
We present simulations of the multiphase interstellar medium (ISM) at solar neighbourhood
conditions including thermal and non-thermal ISM processes, star cluster formation, and …

Introducing TIGRESS-NCR. I. Coregulation of the Multiphase Interstellar Medium and Star Formation Rates

CG Kim, JG Kim, M Gong… - The Astrophysical …, 2023‏ - iopscience.iop.org
Massive, young stars are the main source of energy that maintains multiphase structure and
turbulence in the interstellar medium (ISM), and without this" feedback" the star formation …

PHANGS–JWST First Results: Mid-infrared Emission Traces Both Gas Column Density and Heating at 100 pc Scales

AK Leroy, K Sandstrom, E Rosolowsky… - The Astrophysical …, 2023‏ - iopscience.iop.org
We compare mid-infrared (mid-IR), extinction-corrected Hα, and CO (2–1) emission at 70–
160 pc resolution in the first four PHANGS–JWST targets. We report correlation strengths …

Star formation efficiency and dispersal of giant molecular clouds with UV radiation feedback: dependence on gravitational boundedness and magnetic fields

JG Kim, EC Ostriker, N Filippova - The Astrophysical Journal, 2021‏ - iopscience.iop.org
Molecular clouds are supported by turbulence and magnetic fields, but quantifying their
influence on cloud life cycle and star formation efficiency (SFE) remains an open question …

The physical drivers and observational tracers of CO-to-H2 conversion factor variations in nearby barred galaxy centers

YH Teng, KM Sandstrom, J Sun, M Gong… - The Astrophysical …, 2023‏ - iopscience.iop.org
The CO-to-H 2 conversion factor (α CO) is central to measuring the amount and properties of
molecular gas. It is known to vary with environmental conditions, and previous studies have …