K. Johnson

Metal-poor molecular clouds in dwarf galaxies at parsec-scale resolution

L. K. Hunt, M. Heyer, U. Lisenfeld +17

Understanding how stars form at low metallicity is challenging because carbon monoxide (CO) emission, which usually probes the molecular gas reservoir, is faint, and tends to be co…

The HII Regions' Molecular Law of Star Formation

Daniela Calzetti, Drew Lapeer, Robert C. Kennicutt +28

We combine imaging data from the HST, JWST, and ground-based millimeter facilities to investigate the correlation between star formation rate (SFR) and molecular gas at the ~100 pc…

Dust-Embedded Star Formation: Bridging Magellanic Cloud Studies of Massive Young Stellar Objects to Nearby Spiral Galaxies

M. Jimena Rodríguez, Rémy Indebetouw, Janice C. Lee +13

We use JWST NIRCam and MIRI imaging at 2, 4, 10, and 21 um to study young, dusty compact sources in four nearby galaxies at distances of ~ 1-5Mpc (M33, NGC300, NGC7793, and NGC5068…

Feedback in Extragalactic Star Clusters (FEAST): Spectral Energy Distributions and the Physical Properties of Star Clusters in NGC 628 with CIGALE

Sean T. Linden, Angela Adamo, Alex Pedrini +16

With Hubble Space Telescope (HST) and James Webb Space Telescope (JWST) observations of NGC~628 spanning 0.3--7.7\, $μ$ m, we fit the spectral energy distributions (SEDs) of over 12,…

FEAST: a NIRSpec/MOS survey of emerging young star clusters in NGC 628

Helena Faustino Vieira, Angela Adamo, Neville Shane +18

JWST can pierce through dusty molecular clouds to study the early stages of star formation, where young star clusters are actively driving stellar feedback and still emerging from…

FEAST: Probing Hierarchical Star Formation with the Spatial Distributions of Young Star Clusters

Drew Lapeer, Daniela Calzetti, Kathryn Grasha +19

We apply the angular two-point correlation function (TPCF) to the spatial distribution of young star clusters (YSCs) in four nearby star forming galaxies (NGC 628, NGC 4449, M51, a…

The Spatial Evolution of Star Clusters in NGC 628 with JWST

Anne S. M. Buckner, Ana Duarte-Cabral, Angela Adamo +23

We examine the spatial distribution of star clusters in NGC 628 using the statistical tool INDICATE to quantify clustering tendencies. Our sample, based on HST and JWST observation…

astro-ph.GA2025★ 5 cited

The Calibration of Short Wavelength Polycyclic Aromatic Hydrocarbon Emission as Star Formation Rate Indicators with JWST

Benjamin Gregg, Daniela Calzetti, Angela Adamo +18

We use JWST/NIRCam and MIRI imaging acquired by the Feedback in Emerging extrAgalactic Star clusTers (FEAST) program along with archival HST imaging to map ionized gas (Pa $α$ , Br$α…

Characterizing the star cluster populations in Stephan's Quintet using HST and JWST observations

P. Aromal, S. C. Gallagher, K. Fedotov +14

Stephan's Quintet (SQ) is a local compact galaxy group system that exhibits significant star formation activity. A history of tidal interactions between its four member galaxies an…

The near infrared SED of young star clusters in the FEAST galaxies: Missing ingredients at 1-5 $μ$ m

Alex Pedrini, Angela Adamo, Arjan Bik +23

We present a combined HST and JWST 0.2 - to - 5 $μ$ m analysis of the spectral energy distributions (SEDs) of emerging young star clusters (eYSCs) in four nearby galaxies from the F…

Quantification of The Age Dependence of Mid-Infrared Star Formation Rate Indicators

Daniela Calzetti, Robert C. Kennicutt, Angela Adamo +33

We combine James Webb Space Telescope images of the nearby galaxy NGC 5194 in the hydrogen recombination line Pa-alpha (lambda=1.8756 micron) from the Cycle 1 program JWST-FEAST wi…

FEAST: probing the stellar population of the starburst dwarf galaxy NGC4449 with JWST/NIRCam

Matteo Correnti, Giacomo Bortolini, Flavia Dell'Agli +22

We present new JWST/NIRCam observations of the starburst irregular galaxy NGC 4449, obtained in Cycle 1 as part of the Feedback in Emerging extrAgalactic Star clusTers (FEAST) prog…

astro-ph.GA2025★ 1 cited

FEAST: JWST uncovers the emerging timescales of young star clusters in M83

Alice Knutas, Angela Adamo, Alex Pedrini +23

We present JWST NIRCam observations of the emerging young star clusters (eYSCs) detected in the nearby spiral galaxy M83. The NIRcam mosaic encompasses the nuclear starburst, the b…

An Investigation of Disk Thickness in M51 from H-alpha, Pa-alpha, and Mid-Infrared Power Spectra

Bruce G. Elmegreen, Daniela Calzetti, Angela Adamo +27

Power spectra (PS) of high-resolution images of M51 (NGC 5194) taken with the Hubble Space Telescope and the James Webb Space Telescope have been examined for evidence of disk thic…

Tracing the earliest stages of star and cluster formation in 19 nearby galaxies with PHANGS-JWST and HST: compact 3.3 $μ$ 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…

Power Spectra of JWST Images of Local Galaxies: Searching for Disk Thickness

Bruce G. Elmegreen, Angela Adamo, Varun Bajaj +13

JWST/MIRI images have been used to study the Fourier transform power spectra (PS) of two spiral galaxies, NGC 628 and NGC 5236, and two dwarfs, NGC 4449 and NGC 5068, at distances…

The Clearing Timescale for Infrared-selected Star Clusters in M83 with HST

Suyash Deshmukh, Sean T. Linden, Daniela Calzetti +6

We present an analysis of Hubble Space Telescope (HST) data from WFC3/UVIS, WFC3/IR and ACS, investigating the young stellar cluster (YSC) population in the face-on spiral galaxy M…

Feedback in Emerging extragAlactic Star clusTers, FEAST: JWST spots PAH destruction in NGC 628 during the emerging phase of star formation

Alex Pedrini, Angela Adamo, Daniela Calzetti +21

We investigate the emergence phase of young star clusters in the nearby spiral galaxy NGC 628. We use JWST NIRCam and MIRI observations to create spatially resolved maps of the Pa$…

astro-ph.GA2024★ 12 cited

Feedback in Emerging Extragalactic Star Clusters (JWST--FEAST): Calibration of Star Formation Rates in the Mid-Infrared with NGC 628

Daniela Calzetti, Angela Adamo, Sean T. Linden +19

New JWST near-infrared imaging of the nearby galaxy NGC 628 from the Cycle 1 program JWST-FEAST is combined with archival JWST mid-infrared imaging to calibrate the 21 $μ$ m emissio…

astro-ph.GA2024★ 1 cited

Feedback in emerging extragalactic star clusters, FEAST: The relation between 3.3 $μ$ m PAH emission and Star Formation Rate traced by ionized gas in NGC 628

Benjamin Gregg, Daniela Calzetti, Angela Adamo +23

We present maps of ionized gas (traced by Pa $α$ and Br $α$ ) and 3.3 $μ$ m Polycyclic Aromatic Hydrocarbon (PAH) emission in the nearby spiral galaxy NGC 628, derived from new JWST/NI…

The Timescales of Star Cluster Emergence: The Case of NGC 4449

Timothy McQuaid, Daniela Calzetti, Sean T. Linden +7

We survey the young star cluster population in the dwarf galaxy NGC4449 with the goal of investigating how stellar feedback may depend on the clusters' properties. Using Ultraviole…

Physical Properties of Molecular Clouds in the Overlap Region of the Merging Antennae Galaxies

Grace Krahm, Molly K. Finn, Remy Indebetouw +3

As the closest major galaxy merger and home to thousands of super star clusters (SSCs), the Antennae Galaxies (NGC 4038 and NGC 4039) are an important location to study the molecul…