activity
20222026
most citedDistances to Local Group Galaxies via Population II, Stellar Distance Indicators. II. The Fornax Dwarf Spheroidal

12 citations · 40 across the 17 of their papers we have counts for

collaborators

18 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

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

Multi-scale Gas Structure and Dynamics in an Extragalactic Central Molecular Zone

Liam M. Wang, Jiayi Sun, Yu-Hsuan Teng +4

The structures and dynamics of the interstellar medium are governed by a combination of self-gravity, external gravity, and various sources of ordered and random motions on differe…

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

Resolved HII regions in NGC 253: Ionized gas structure and suggestions of a universal density-surface brightness relation

Rebecca L. McClain, Adam K. Leroy, Enrico Congiu +23

We use the full-disk VLT-MUSE mosaic of NGC 253 to identify 2492 HII regions and study their resolved structure. With an average physical resolution of 17 pc, this is one of the la…

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★ 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

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

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.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★ 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.GA2023★ 8 cited

The impact of HII regions on Giant Molecular Cloud properties in nearby galaxies sampled by PHANGS ALMA and MUSE

Antoine Zakardjian, Jérôme Pety, Cinthya N. Herrera +36

We identify giant molecular clouds (GMCs) associated with HII regions for a sample of 19 nearby galaxies using catalogs of GMCs and H regions released by the PHANGS-ALMA and PHANGS…

astro-ph.GA2022★ 5 cited

Distances to Local Group Galaxies via Population II, Stellar Distance Indicators I: The Sculptor Dwarf Spheroidal

Quang H. Tran, Taylor J. Hoyt, Wendy L. Freedman +5

We determine the distance to the Sculptor Dwarf Spheroidal via three Population II stellar distance indicators: (a) the Tip of the Red Giant Branch (TRGB), (b) RR Lyrae variables (…

astro-ph.GA2022★ 12 cited

Distances to Local Group Galaxies via Population II, Stellar Distance Indicators. II. The Fornax Dwarf Spheroidal

Elias K. Oakes, Taylor J. Hoyt, Wendy L. Freedman +5

We determine three independent Population II distance moduli to the Fornax dwarf spheroidal (dSph) galaxy, using wide-field, ground-based imaging acquired with the Magellan-Ba…