activity
20132026
most citedThe lifecycle of molecular clouds in nearby star-forming disc galaxies

292 citations · 7.2k across the 143 of their papers we have counts for

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physics.hist-ph2025

A catalog of old globes in Spanish public collections

Miguel Querejeta

This paper presents the first catalog of celestial and terrestrial globes, as well as armillary spheres and orreries, produced before 1900 and preserved in Spanish public instituti…

astro-ph.IM2025

Towards ALMA2040: An update from the European community and invitation to contribute

Stefano Facchini, Jacqueline Hodge, Jes Jørgensen +27

Over the last 15 years, the Atacama Large Millimeter/submillimeter Array (ALMA) has revolutionized astrophysics by providing unprecedented resolution and sensitivity in observing t…

astro-ph.GA2025

The Nuclear Star Cluster of M 74: a fossil record of the very early stages of a star-forming galaxy

Francesca Pinna, Nils Hoyer, Jairo Méndez Abreu +13

Nuclear star clusters (NSC) are dense and compact stellar systems, of sizes of few parsecs, located at galactic centers. Their properties and formation mechanisms seem to be tightl…

astro-ph.GA2025

Localized Deviations from the CO-PAH Relation in PHANGS-JWST Galaxies: Faint PAH Emission or Elevated CO Emissivity?

Jaeyeon Kim, Adam K. Leroy, Karin Sandstrom +25

Polycyclic aromatic hydrocarbon (PAH) emission is widely used to trace the distribution of molecular gas in the interstellar medium, exhibiting a tight correlation with CO(2-1) emi…

astro-ph.GA2025

Galaxy Activity, Torus and Outflow Survey (GATOS) X: Molecular gas clumpiness under the influence of AGN

Federico Esposito, Almudena Alonso-Herrero, Santiago García-Burillo +27

The distribution of molecular gas on small scales regulates star formation and the growth of supermassive black holes in galaxy centers, yet the role of active galactic nuclei (AGN…

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

The Hidden Life of Stars: Embedded Beginnings to AGB Endings in the PHANGS-JWST Sample. I. Catalog of Mid-IR Sources

Hamid Hassani, Erik Rosolowsky, Adam K. Leroy +28

We present a multiwavelength catalog of mid-infrared-selected compact sources in 19 nearby galaxies, combining JWST NIRCam/MIRI, HST UV-optical broadband, H narrow-band, and ALM…

astro-ph.GA2025

Azimuthal offsets in spiral arms of nearby galaxies

Miguel Querejeta, Sharon E. Meidt, Yixian Cao +28

Spiral arms play a central role in disc galaxies, but their dynamical nature remains a long-standing open question. Azimuthal offsets between molecular gas and star formation are e…

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

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★ 5 cited

Modeling the Mass Distribution and Gravitational Potential of Nearby Disk Galaxies: Implications for the ISM Dynamical Equilibrium

Vivek Vijayakumar, Jiayi Sun, Eve C. Ostriker +5

We characterize stellar, gas, and dark matter mass distributions for 17 nearby massive disk galaxies from the PHANGS sample. This allows us to compute the gravitational potential t…

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

Optimising the analysis of emission lines in galaxies: the case of the MUSE TIMER galaxy NGC 613

Luiz A. Silva-Lima, Dimitri A. Gadotti, Lucimara P. Martins +11

Galaxy evolution is driven by spatially distributed processes with varying timescales. Integral field spectroscopy provides spatially-resolved information about these processes. Ne…

astro-ph.GA2025

The impact of spiral arms on the star formation life cycle

Andrea Romanelli, Mélanie Chevance, J. M. Diederik Kruijssen +18

The matter cycle between gas clouds and stars in galaxies plays a crucial role in regulating galaxy evolution through feedback mechanisms. In turn, the local and global galactic en…

astro-ph.GA2025★ 17 cited

Bar ages derived for the first time in nearby galaxies: Insights on secular evolution from the TIMER sample

Camila de Sá-Freitas, Dimitri A. Gadotti, Francesca Fragkoudi +9

Once galaxies settle their discs and become self-gravitating, stellar bars can form, driving the subsequent evolution of their host galaxy. Determining the ages of bars can therefo…

astro-ph.GA2025★ 4 cited

Morphology and kinematics of the gas in M51: How interaction with NGC5195 has moulded the structure of its arms

Joan Font, John E. Beckman, Benoît Epinat +2

The Whirlpool Galaxy is a well studied grand design galaxy with two major spiral arms, and a large satellite NGC 5195. The arms both show long uniform sections with perturbations (…

astro-ph.GA2025

Cloud-scale gas properties, depletion times, and star formation efficiency per free-fall time in PHANGS--ALMA

Adam K. Leroy, Jiayi Sun, Sharon Meidt +31

We compare measurements of star formation efficiency to cloud-scale gas properties across PHANGS-ALMA. Dividing 67 galaxies into 1.5 kpc scale regions, we calculate the molecular g…

astro-ph.GA2025★ 7 cited

Dense gas scaling relations at kiloparsec scales across nearby galaxies with the ALMA ALMOND and IRAM 30m EMPIRE surveys

Lukas Neumann, Maria J. Jimenez-Donaire, Adam K. Leroy +17

Dense, cold gas is the key ingredient for star formation. Over the last two decades, HCN(1-0) emission has been utilised as the most accessible dense gas tracer to study external g…