The cosmic baryon and metal cycles

C Péroux, JC Howk - Annual Review of Astronomy and …, 2020‏ - annualreviews.org
Characterizing the relationship between stars, gas, and metals in galaxies is a critical
component of understanding the cosmic baryon cycle. We compile contemporary censuses …

From diffuse gas to dense molecular cloud cores

J Ballesteros-Paredes, P André, P Hennebelle… - Space Science …, 2020‏ - Springer
Molecular clouds are a fundamental ingredient of galaxies: they are the channels that
transform the diffuse gas into stars. The detailed process of how they do it is not completely …

Tracing the total molecular gas in galaxies:[CII] and the CO-dark gas

SC Madden, D Cormier, S Hony, V Lebouteiller… - Astronomy & …, 2020‏ - aanda.org
Context. Molecular gas is a necessary fuel for star formation. The CO (1− 0) transition is
often used to deduce the total molecular hydrogen but is challenging to detect in low …

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 …

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 …

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 …

The Environmental Dependence of the XCO Conversion Factor

M Gong, EC Ostriker, CG Kim… - The Astrophysical …, 2020‏ - iopscience.iop.org
CO is the most widely used observational tracer of molecular gas. The observable CO
luminosity is translated to H2 mass via a conversion factor, XCO, which is a source of …

Resolved Measurements of the CO-to-H2 Conversion Factor in 37 Nearby Galaxies

ID Chiang, KM Sandstrom, J Chastenet… - The Astrophysical …, 2024‏ - iopscience.iop.org
We measure the CO-to-H 2 conversion factor (α CO) in 37 galaxies at 2 kpc resolution, using
the dust surface density inferred from far-infrared emission as a tracer of the gas surface …

Metallicity dependence of the H/H2 and C+/C/CO distributions in a resolved self-regulating interstellar medium

CY Hu, A Sternberg… - The Astrophysical …, 2021‏ - iopscience.iop.org
We study the metallicity dependence of the H/H 2 and C+/C/CO distributions in a self-
regulated interstellar medium (ISM) across a broad range of metallicities (0.1< Z/Z⊙< 3). To …