activity
20072026
most citedThe Star Formation Efficiency in Nearby Galaxies: Measuring Where Gas Forms Stars Effectively

1.9k citations · 19.3k across the 236 of their papers we have counts for

collaborators

237 papers

astro-ph.GA2026

Quantifying the decline in CO(2-1) intensity around PHANGS-HST star clusters: Constraints on molecular gas dispersal, stellar feedback, and cluster formation efficiency

Hao He, Adam K. Leroy, Erik Rosolowsky +37

We combine the largest survey of star clusters in nearby galaxies to-date, PHANGS-HST, with maps of molecular gas maps from PHANGS-ALMA to constrain the efficiency of cluster forma…

astro-ph.GA2026

Mid-Infrared Colors Vary with Galactic Environment: Contrasting Star-Forming Disks, Young Centers, and Quiescent Star-Formation Deserts

Debosmita Pathak, Karin M. Sandstrom, Adam K. Leroy +27

We present pc-resolution JWST/MIRI and NIRCam measurements of mid-infrared (mid-IR) color variations in the diffuse interstellar medium (ISM) of 71 nearby star-forming…

astro-ph.GA2026

From gas to stars along the spiral wave: CO, HCN, and star formation variations across the spiral arms in NGC 4321 and M51

Minou Greve, Lukas Neumann, Mallory Thorp +17

Molecular clouds form stars from the interstellar medium via gravitational collapse, following a sequence from low-density gas to high-density cores and eventually the formation of…

astro-ph.GA2026

Uncovering the multi-scale structure of dust distribution in nearby galaxies

E. Tanchon, M. Boquien, J. Chastenet +18

High-resolution JWST-MIRI images now allow us to resolve in great detail the multi-scale nature of the emission in nearby star-forming galaxies, from compact star-forming regions t…

astro-ph.GA2026

The lifetime of 100,000 molecular clouds in the nearby Universe

Z. Bazzi, M. I. N. Kobayashi, D. Colombo +25

Multiple mechanisms are proposed for the formation of giant molecular clouds (GMCs), from gravitational free-fall caused by self-gravity to stellar feedback-driven gas compression.…

astro-ph.GA2026

Surveying the Whirlpool at Arcseconds with NOEMA (SWAN). IV. Extent of active galactic nucleus feedback on the interstellar medium

Mallory D. Thorp, Antonio Usero, Frank Bigiel +19

Active Galactic Nuclei (AGN) are intertwined with galaxy evolution, injecting energy into the interstellar medium (ISM) that could regulate star formation as a galaxy evolves. Howe…

astro-ph.GA2026

The Structure of Molecular Gas in PHANGS-ALMA Galaxies: Cloud Spacing, Two-Point Correlation and Stacked Intensity Profiles

Hao He, Adam Leroy, Erik Rosolowsky +21

The sub-kpc scale gas structure encodes key information of giant molecular cloud (GMC) formation. Therefore, we aim for a quantitative description of molecular gas structure across…

astro-ph.GA2026★ 2 cited

Molecular gas and star formation in central rings across nearby galaxies

Damian R. Gleis, Sophia K. Stuber, Eva Schinnerer +20

Nearby galaxies exhibit a variety of structures, including central rings, similar to the MW Central Molecular Zone (CMZ). These rings are common in barred galaxies and can be gas-r…

astro-ph.GA2025

PHANGS-JWST: the largest extragalactic molecular cloud catalog traced by polycyclic aromatic hydrocarbon emission

Z. Bazzi, D. Colombo, F. Bigiel +25

High-resolution JWST images of nearby spiral galaxies reveal polycyclic aromatic hydrocarbon (PAH) emission structures that trace molecular gas, including CO-dark regions. We ident…

astro-ph.GA2025

Masses, Star-Formation Efficiencies, and Dynamical Evolution of 18,000 HII Regions

Debosmita Pathak, Adam K. Leroy, Ashley. T. Barnes +36

We present measurements of the masses associated with HII regions across 19 nearby star-forming galaxies by combining data from JWST, HST, MUSE, ALMA, VLA, and MeerKAT…

astro-ph.GA2025

LMC+: Large-scale mapping of [CII] and [OIII] in the LMC molecular ridge, I. Dataset and line ratio analyses

C. Fischer, S. C. Madden, A. Krabbe +29

The fundamental process of star formation in galaxies involves the interplay between the fueling of star formation via molecular gas and the feedback from recently formed massive s…

astro-ph.GA2025

Surveying the Whirlpool at Arcseconds with NOEMA (SWAN): III. CO/CO ratio variations across the M51 galaxy

Ina Galić, Mallory Thorp, Frank Bigiel +16

CO isotopologues are common tracers of the bulk molecular gas in extragalactic studies, providing insights into the physical and chemical conditions of the cold molecular gas, a re…

astro-ph.GA2025★ 1 cited

The SWAN view of dense gas in the Whirlpool -- A cloud-scale comparison of N2H+, HCO+, HNC and HCN emission in M51

Sophia K. Stuber, Eva Schinnerer, Antonio Usero +22

Tracing dense molecular gas, the fuel for star formation, is essential for the understanding of the evolution of molecular clouds and star formation processes. We compare the emiss…

astro-ph.GA2025★ 4 cited

The EDGE-CALIFA survey: The effect of active galactic nucleus feedback on the integrated properties of galaxies at different stages of their evolution

Z. Bazzi, D. Colombo, F. Bigiel +5

Galaxy quenching, the intricate process through which galaxies transition from active star-forming states to retired ones, remains a complex phenomenon that requires further invest…

astro-ph.GA2025★ 6 cited

The EDGE-CALIFA survey: Star formation relationships for galaxies at different stages of their evolution

D. Colombo, V. Kalinova, Z. Bazzi +13

Galaxy evolution is largely driven by star formation activity or by the cessation of it, also called star formation quenching. In this paper, we present star formation scaling rela…

astro-ph.GA2025

The EDGE-CALIFA Survey: An integral field unit-based integrated molecular gas database for galaxy evolution studies in the Local Universe

D. Colombo, V. Kalinova, Z. Bazzi +14

Studying galaxy evolution requires knowledge not only of the stellar properties, but also of the interstellar medium (in particular the molecular phase) out of which stars form, us…

astro-ph.GA2025

Extreme cloud collisions in nearby barred galaxies

Tutku Kolcu, Mattia C. Sormani, Witold Maciejewski +16

The inner regions of the Milky Way are known to contain an enigmatic population of prominent molecular clouds characterised by extremely broad lines. The physical origin of these '…

astro-ph.GA2025★ 3 cited

The Hierarchical Dynamical State of Molecular Gas from 3 to 300 pc in NGC 253

Elias K. Oakes, Christopher M. Faesi, Erik Rosolowsky +25

Understanding how the dynamical state of the interstellar medium (ISM) changes across spatial scales can provide important insights into how the gas is organized and ultimately col…

astro-ph.GA2025★ 7 cited

The MUSE view of the Sculptor galaxy: survey overview and the planetary nebulae luminosity function

E. Congiu, F. Scheuermann, K. Kreckel +21

NGC 253, the Sculptor galaxy, is the southern, massive, star-forming disk galaxy closest to the Milky Way. In this work, we present a new 103-pointing MUSE mosaic of this galaxy co…

astro-ph.GA2025

Time-scales of polycyclic aromatic hydrocarbon and dust continuum emission from gas clouds compared to molecular gas cloud lifetimes in PHANGS-JWST galaxies

Jaeyeon Kim, Mélanie Chevance, Lise Ramambason +24

Recent JWST mid-infrared (mid-IR) images, tracing polycyclic aromatic hydrocarbons (PAHs) and dust continuum emission, provide detailed views of the interstellar medium (ISM) in ne…

astro-ph.GA2025

Constraining resolved extragalactic variation with well calibrated ALMA observations

Jakob den Brok, Elias K. Oakes, Adam K. Leroy +13

CO(1-0) and CO(2-1) are commonly used as bulk molecular gas tracers. The CO line ratios (especially CO(2-1)/CO(1-0) - ) vary within and among galaxies, yet previous studies…

astro-ph.GA2025★ 7 cited

Reconciling extragalactic star formation efficiencies with theory: insights from PHANGS

Sharon E. Meidt, Simon C. O. Glover, Ralf S. Klessen +22

New extragalactic measurements of the cloud population-averaged star formation (SF) efficiency per freefall time from PHANGS show little sign of theoretically predi…

astro-ph.GA2025

Relationships between PAHs, Small Dust Grains, H, and HI in Local Group Dwarf Galaxies NGC 6822 and WLM Using JWST, ALMA, and the VLA

Ryan Chown, Adam K. Leroy, Alberto D. Bolatto +27

We present 0.7-3.3 pc resolution mid-infrared (MIR) JWST images at 7.7 m (F770W) and 21 m (F2100W) covering the main star-forming regions of two of the closest star-forming l…

astro-ph.GA2025★ 14 cited

Empirical SED Templates for Star Clusters Observed with HST and JWST: No Strong PAH or IR Dust Emission after Five Myr

Bradley C. Whitmore, Rupali Chandar, Janice C. Lee +25

JWST observations, when combined with HST data, promise to improve age estimates of star clusters in nearby spiral galaxies. However, feedback from young cluster stars pushes out t…