D. Colombo

A clump population framework for star formation across galactic scales

J. W. Zhou, Sami Dib, Tie Liu +11

Whether star formation across different spatial scales and galactic environments follows universal laws remains poorly understood. We investigate cloud-scale star formation in 30 d…

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…

JWST Whirlpool Galaxy Treasury: Mid-Infrared Emission in M51 and its Relation to Gas Column and Star Formation

Mansi Padave, Karin M. Sandstrom, Daniel A. Dale +25

Using JWST/MIRI imaging of M51 in eight broadband filters, we investigate correlations of mid-infrared emission from polycyclic aromatic hydrocarbons (PAHs) and dust continuum with…

Radar-Chart Analysis of Star-Formation Quenching Stages Across Circular Velocity Curve Classes in Nearby CALIFA Galaxies

Veselina Kalinova, Dario Colombo

We analyze the circular velocity curves of 215 non-active galaxies from the Calar Alto Legacy Integral Field spectroscopy Area survey. Using radar-chart analysis, we compare two cl…

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 $\sim 18, 000$ HII regions across 19 nearby star-forming galaxies by combining data from JWST, HST, MUSE, ALMA, VLA, and MeerKAT…

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…

Surveying the Whirlpool at Arcseconds with NOEMA (SWAN): III. $^{13}$ CO/C $^{18}$ O 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…

The vertical structure of the stellar disk in NGC 551

Harshal Raut, Narendra Nath Patra, Prerana Biswas +6

We self-consistently determine the 3D density distribution of NGC 551's stellar disk and study observational signatures of two-component stellar disks. Assuming baryonic disks are…

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★ 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 $ε_{ff}$ from PHANGS show little sign of theoretically predi…

The resolved star-formation efficiency of early-type galaxies

Thomas G. Williams, Francesco Belfiore, Martin Bureau +19

Understanding how and why star formation varies between galaxies is fundamental to our comprehension of galaxy evolution. In particular, the star-formation efficiency (SFE; star-fo…

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…

Dynamical resonances in PHANGS galaxies

Marina Ruiz-García, Miguel Querejeta, Santiago García-Burillo +13

Bars are remarkable stellar structures that can transport gas toward centers and drive the secular evolution of galaxies. In this context, it is important to locate dynamical reson…

astro-ph.GA2024★ 19 cited

Polycyclic Aromatic Hydrocarbon and CO(2-1) Emission at 50-150 pc Scales in 70 Nearby Galaxies

Ryan Chown, Adam K. Leroy, Karin Sandstrom +44

Combining Atacama Large Millimeter/sub-millimeter Array CO(2-1) mapping and JWST near- and mid-infrared imaging, we characterize the relationship between CO(2-1) and polycyclic aro…

astro-ph.GA2024★ 6 cited

Neutral atomic and molecular gas dynamics in the nearby spiral galaxies NGC 1512, NGC 4535, and NGC 7496

Sebastian Laudage, Cosima Eibensteiner, Frank Bigiel +20

Neutral atomic gas (HI) effectively traces galactic dynamics across mid to large galactocentric radii. However, its limitations in observing small-scale changes within the central…

PHANGS-MeerKAT and MHONGOOSE HI observations of nearby spiral galaxies: physical drivers of the molecular gas fraction, $R_{mol}$

Cosima Eibensteiner, Jiayi Sun, Frank Bigiel +36

The molecular-to-atomic gas ratio is crucial to the evolution of the interstellar medium in galaxies. We investigate the balance between the atomic ( $Σ_{HI}$ ) and molecular gas…

Do spiral arms enhance star formation efficiency?

Miguel Querejeta, Adam K. Leroy, Sharon E. Meidt +32

Spiral arms are some of the most spectacular features in disc galaxies, and also present in our own Milky Way. It has been argued that star formation should proceed more efficientl…

PHANGS-ML: dissecting multiphase gas and dust in nearby galaxies using machine learning

Dalya Baron, Karin M. Sandstrom, Erik Rosolowsky +25

The PHANGS survey uses ALMA, HST, VLT, and JWST to obtain an unprecedented high-resolution view of nearby galaxies, covering millions of spatially independent regions. The high dim…