activity
20092026
most citedThe Science Performance of JWST as Characterized in Commissioning

440 citations · 3.8k across the 87 of their papers we have counts for

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82 papers · 1 filter

astro-ph.GA2026

Star Cluster Populations in 38 Spiral Galaxies: Evidence for Near-Universal Mass and Age Distributions from PHANGS

Rupali Chandar, Matthew R. Floyd, David A. Thilker +23

We present the largest study to date of star cluster mass and age distributions in nearby galaxies. The analysis is based on a uniformly selected catalog of over 15,000 (36,000) hu…

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

Variations in the 3.3 m Polycyclic Aromatic Hydrocarbon Feature Across Nearby Galaxies Driven by Metallicity and Radiation Field Spectrum

Hannah B. Koziol, Karin Sandstrom, Dalya Baron +29

We use JWST NIRCam imaging to investigate the 3.3 m polycyclic aromatic hydrocarbon (PAH) feature in nearby galaxies. NIRCam observations of the 3.3 m feature are emerging as…

astro-ph.GA2026

A steep mass transition for bar-driven ISM structuring revealed by PHANGS-JWST

Eric Emsellem, Jessica Sutter, Ryan Chown +26

Galactic bars play a critical role in the secular evolution of their hosts by reorganising the ISM. We use a sample of 57 star-forming disc galaxies observed with JWST at 3 and 7.7…

astro-ph.GA2026

To What Extent Are Star Cluster Ages Encoded in Their Environments? Exploring the Spatial Distribution of Age-Related Information with PHANGS-HST Imaging and Convolutional Neural Networks

Javier Viaña, Janice C. Lee, Andrew Vanderburg +12

The environments around star clusters evolve as stellar feedback reshapes the interstellar medium and dynamical processes reorganize the structure of the surrounding stellar field.…

astro-ph.GA2026

Stellar associations powering HII regions $\unicode{x2013}$ II. Escape fraction of ionizing photons

Fabian Scheuermann, Kathryn Kreckel, Jia Wei Teh +27

Newly formed stars have a profound impact on their environment by depositing energy and momentum into the surrounding gas. However, only a fraction of the stellar feedback is retai…

astro-ph.GA2025

Evolved Supergiants in PHANGS I: Red Supergiants in 19 Galaxies between 5-20 Mpc with HST and JWST

Sumit K. Sarbadhicary, David Thilker, Adam K. Leroy +17

Red supergiants (RSGs) are important for our understanding of supernova progenitors, stellar populations, stellar evolution, mass loss and dust production. Extragalactic surveys of…

astro-ph.GA2025★ 4 cited

PAH Marks the Spot: Digging for Buried Clusters in Nearby Star-forming Galaxies

Gabrielle B. Graham, Daniel A. Dale, Chase L. Smith +39

The joint capabilities of the Hubble Space Telescope (HST) and JWST allow for an unparalleled look at the early lives of star clusters at near- and mid-infrared wavelengths. We pre…

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★ 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…

astro-ph.GA2025

PAH Feature Ratios Around Stellar Clusters and Associations in 19 Nearby Galaxies

Daniel A. Dale, Gabrielle B. Graham, Ashley T. Barnes +27

We present a comparison of observed polycyclic aromatic hydrocarbon (PAH) feature ratios in 19 nearby galaxies with a grid of theoretical expectations for near- and mid-infrared du…

astro-ph.GA2024

Tracing the earliest stages of star and cluster formation in 19 nearby galaxies with PHANGS-JWST and HST: compact 3.3 m PAH emitters and their relation to the optical census of star clusters

M. Jimena Rodríguez, Janice C. Lee, Remy Indebetouw +25

The earliest stages of star and cluster formation are hidden within dense cocoons of gas and dust, limiting their detection at optical wavelengths. With the unprecedented infrared…

astro-ph.GA2024

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

The Fraction of Dust Mass in the Form of PAHs on 10-50 pc Scales in Nearby Galaxies

Jessica Sutter, Karin Sandstrom, Jérémy Chastenet +21

Polycyclic aromatic hydrocarbons (PAHs) are a ubiquitous component of the interstellar medium (ISM) in z~0 massive, star-forming galaxies and play key roles in ISM energy balance,…

astro-ph.GA2024★ 9 cited

PHANGS-HST: Globular Cluster Systems in 17 Nearby Spiral Galaxies

Matthew Floyd, Rupali Chandar, Bradley C. Whitmore +18

We present new catalogs of likely globular clusters (GCs) in 17 nearby spiral galaxies studied as part of the PHANGS-HST Treasury Survey. The galaxies were imaged in five broad-ban…

astro-ph.GA2024

PHANGS-HST catalogs for 100,000 star clusters and compact associations in 38 galaxies: I. Observed properties

Daniel Maschmann, Janice C. Lee, David A. Thilker +24

We present the largest catalog to-date of star clusters and compact associations in nearby galaxies. We have performed a V-band-selected census of clusters across the 38 spiral gal…

astro-ph.GA2024

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…

astro-ph.GA2024★ 1 cited

PHANGS-JWST: Data Processing Pipeline and First Full Public Data Release

Thomas G. Williams, Janice C. Lee, Kirsten L. Larson +55

The exquisite angular resolution and sensitivity of JWST is opening a new window for our understanding of the Universe. In nearby galaxies, JWST observations are revolutionizing ou…

astro-ph.GA2024

Hidden Gems on a Ring: Infant Massive Clusters and Their Formation Timeline Unveiled by ALMA, HST, and JWST in NGC 3351

Jiayi Sun, Hao He, Kyle Batschkun +38

We study young massive clusters (YMCs) in their embedded "infant" phase with ALMA, HST, and JWST observations targeting the central starburst ring in NGC…

astro-ph.GA2023

A Two-Component Probability Distribution Function Describes the mid-IR Emission from the Disks of Star-Forming Galaxies

Debosmita Pathak, Adam K. Leroy, Todd A. Thompson +28

High-resolution JWST-MIRI images of nearby spiral galaxies reveal emission with complex substructures that trace dust heated both by massive young stars and the diffuse interstella…

astro-ph.GA2023★ 23 cited

Quantifying the energy balance between the turbulent ionised gas and young stars

Oleg V. Egorov, Kathryn Kreckel, Simon C. O. Glover +19

We investigate the ionised gas morphology, excitation properties, and kinematics in 19 nearby star-forming galaxies from the PHANGS-MUSE survey. We directly compare the kinetic ene…

astro-ph.GA2023★ 27 cited

GOALS-JWST: Gas Dynamics and Excitation in NGC7469 revealed by NIRSpec

Marina Bianchin, Vivian U, Yiqing Song +36

We present new JWST-NIRSpec IFS data for the luminous infrared galaxy NGC7469: a nearby (70.6Mpc) active galaxy with a Sy 1.5 nucleus that drives a highly ionized gas outflow and a…

astro-ph.GA2023★ 2 cited

GOALS-JWST: Small neutral grains and enhanced 3.3 micron PAH emission in the Seyfert galaxy NGC 7469

Thomas S. -Y. Lai, Lee Armus, Marina Bianchin +36

We present James Webb Space Telescope (JWST) Near Infrared Spectrograph (NIRSpec) integral-field spectroscopy of the nearby luminous infrared galaxy, NGC 7469. We take advantage of…

astro-ph.GA2023★ 25 cited

Stellar associations powering HII regions $\unicode{x2013}$ I. Defining an evolutionary sequence

Fabian Scheuermann, Kathryn Kreckel, Ashley T. Barnes +30

Connecting the gas in HII regions to the underlying source of the ionizing radiation can help us constrain the physical processes of stellar feedback and how HII regions evolve ove…