activity
20102026
most citedHubble Space Telescope H-alpha imaging of star-forming galaxies at z = 1-1.5: evolution in the size and luminosity of giant HII regions

121 citations · 504 across the 42 of their papers we have counts for

collaborators

43 papers

astro-ph.GA2026

LEGGOS: Direct abundances of N, O, Ne, S, and Ar in five lensed galaxies at Cosmic Noon

Brian Welch, Gourav Khullar, Taylor A. Hutchison +14

We present direct chemical abundances in five strongly lensed galaxies at Cosmic Noon () using JWST/NIRSpec data from the LEGGOS survey. We measure g…

astro-ph.GA2026

LEGGOS: A Shocking Lack of Evidence for Shocks at sub-kiloparsec Scales at 2 < z < 4

Nikko J. Cleri, Taylor A. Hutchison, Brian Welch +11

Here we present the first systematic search for shocks in six gravitationally lensed galaxies at 2.37 < z < 3.625 with JWST/NIRSpec integral field spectroscopy from the LEnsing and…

astro-ph.GA2026

Ubiquitous Interstellar Neutral Helium Detected with JWST

Jane R. Rigby, D. Koutroumpa, M. Galeazzi +8

We report the discovery of ubiquitous neutral helium emission in sky spectra taken with JWST's NIRSpec instrument. The emission, with a wavelength of 1.0833 micron, resembles one o…

astro-ph.GA2026

LEGGOS I: The JWST LEGGOS Survey -- LEnsing and Galaxy Growth: Observing Substructures -- Unpacks the Nature of Clumpy Star Formation and Quenching in Gravitationally Lensed Galaxies beyond Cosmic Noon

Gourav Khullar, Michael Florian, Matthew B. Bayliss +34

We present first results from the JWST LEGGOS Survey (LEnsing and Galaxy Growth: Observing Substructures), aimed at studying the physics of clumpy star formation and quenching in e…

astro-ph.GA2026

LEGGOS II: A Strong Lens Model and Source-Plane Projection of the Clumpy Star-Forming Galaxy SGASJ111020.0+645950.8 at z=2.48

Pedram Abedi, Keren Sharon, Taylor A. Hutchison +18

Strong gravitational lensing by galaxy clusters combined with the resolution of JWST enables studies of star formation on ~10-100 pc scales in galaxies at z~2-4. As part of the LEn…

astro-ph.GA2026

COOL-LAMPS IX: A Rare Duo of Quasars Each Lensed by a Single Massive Galaxy Cluster

Erik Solhaug, Michael D. Gladders, Andi M. Kisare +20

Wide-separation lensed quasars (WSLQs) are rare systems that arise from the chance alignment of two objects: a galaxy cluster and a background quasar. After two decades, only seven…

astro-ph.GA2026

The GlimmIr: Spectroscopic Variability in a z~7 LRD Indicates Rapid Changes in Both the Narrow and Broad Line Regions

Erini Lambrides, Taylor A. Hutchison, Rebecca L. Larson +39

The enigmatic population of ``Little Red Dots'' (LRDs) sit at the center of some of the largest debates in extragalactic astronomy today. The source(s) of ionizing emission and the…

astro-ph.GA2025

THRILS -- The High-(Redshift+Ionization) Line Search: Program Description & Redshift Catalog

Taylor A. Hutchison, Rebecca L. Larson, Pablo Arrabal Haro +46

To date, many spectroscopic confirmations of z>7 galaxies have been obtained using JWST/NIRSpec prism observations, with most of their physical properties inferred from these obser…

astro-ph.GA2025★ 1 cited

JWST & the Waz Arc I: Spatially Resolving the Physical Conditions within a Post-Starburst Galaxy at Redshift 5 with NIRSpec IFS

Taylor A. Hutchison, Gourav Khullar, Jane R. Rigby +22

We present NIRSpec/IFS observations of a rest-frame UV-bright, massive ( M, ) galaxy highly magnified by gravitational-lensing observed just…

astro-ph.CO2025

Tracing Structure: Shape and Centroid Deviations in 39 Strong Lensing Clusters as a Test of Cluster Formation Predictions

Raven Gassis, Matthew B. Bayliss, Keren Sharon +10

Strong lensing galaxy clusters provide a unique and powerful way to test simulation-derived structure predictions that follow from Cold Dark Matter (CDM) cosmology. Specific…

astro-ph.CO2025

The Chandra Strong Lens Sample: Measuring the Dynamical States and Relaxation Fraction of a Sample of 28 Strong Lensing Selected Galaxy Clusters

Raven Gassis, Matthew B. Bayliss, Michael McDonald +10

We present the results of our dynamical state proxy measurements performed on 28 strong lensing galaxy clusters from the Sloan Giant Arcs Survey (SGAS). Using Chandra ACIS-I/S X-ra…

astro-ph.GA2025

The Sunburst Arc with JWST. IV. The importance of interaction, turbulence, and feedback for Lyman-continuum escape

T. Emil Rivera-Thorsen, Brian Welch, Taylor Hutchison +13

At present, the best opportunity for detailed Lyman Continuum escape studies is in gravitationally lensed galaxies at z >~ 2. Only one such galaxy currently exists in the literatur…

astro-ph.GA2025

JWST Catches a Strongly Gravitationally Lensed AGN In Transition from Type II to Type I

Michael K Florian, Michael D Gladders, Gourav Khullar +10

JWST has enabled the discovery of a statistical sample of obscured (type II) active galactic nuclei (AGN) at cosmic noon. Studies comparing those type II AGN with type I AGN at tha…

astro-ph.GA2025

Discovery of Multiply Ionized Iron Emission Powered by an Active Galactic Nucleus in a z~7 Little Red Dot

Erini Lambrides, Rebecca Larson, Taylor Hutchison +50

Some of the most puzzling discoveries of NASA's JWST in the early Universe surround the surprising abundance of compact red sources, which show peculiar continuum shapes and broad…

astro-ph.GA2025

Intergalactic Medium Tomography with the Sunburst Arc

Michelle A. Berg, John Chisholm, J. Xavier Prochaska +9

Gravitational lensing has transformed the field of gas tomography in the intergalactic medium (IGM) and circumgalactic medium (CGM). Here we use the brightest lensed galaxy identif…

astro-ph.GA2025★ 9 cited

The z = 9.625 Cosmic Gems Galaxy was a "Compact Blue Monster" Propelled by Massive Star Clusters

E. Vanzella, M. Messa, A. Adamo +36

The recent discovery of five massive stellar clusters at z=9.625 in the Cosmic Gems has raised the question about the formation mechanism of star clusters in the first half Gyr aft…

astro-ph.GA2025★ 6 cited

Spatially Resolved Circumgalactic Medium around a Star-Forming Galaxy Driving a Galactic Outflow at

Ahmed Shaban, Rongmon Bordoloi, John M. O'Meara +6

We report the small-scale spatial variation in cool () Mg II absorption detected in the circumgalactic medium (CGM) of a star-forming galaxy at . The CG…

astro-ph.GA2024

Connecting Lyman- and ionizing photon escape in the Sunburst Arc

M. Riley Owens, Keunho J. Kim, Matthew B. Bayliss +17

We investigate the Lyman- (Ly) and Lyman continuum (LyC) properties of the Sunburst Arc, a gravitationally lensed galaxy with a multiply-imaged, compact region leaki…

astro-ph.GA2024

COOL-LAMPS VIII: Known wide-separation lensed quasars and their host galaxies reveal a lack of evolution in since

Aidan P. Cloonan, Gourav Khullar, Kate A. Napier +36

Wide-separation lensed quasars (WSLQs) are a rare class of strongly lensed quasars, magnified by foreground massive galaxy clusters, with typically large magnifications of the mult…

astro-ph.GA2024★ 2 cited

Deep rest-UV JWST/NIRSpec spectroscopy of early galaxies: the demographics of CIV and N-emitters in the reionization era

Michael W. Topping, Daniel P. Stark, Peter Senchyna +12

JWST has recently discovered a subset of reionization era galaxies with ionized gas that is metal poor in oxygen and carbon but heavily-enriched in nitrogen. This abundance pattern…

astro-ph.GA2024★ 7 cited

The First Billion Years, According to JWST

Angela Adamo, Hakim Atek, Micaela B. Bagley +46

With stunning clarity, JWST has revealed the Universe's first billion years. The scientific community is analyzing a wealth of JWST imaging and spectroscopic data from that era, an…

astro-ph.GA2024★ 8 cited

The Sunburst Arc with JWST: II. Observations of an Eta Carinae Analog at

S. Choe, T. Emil Rivera-Thorsen, H. Dahle +11

"Godzilla" is a peculiar object within the gravitationally lensed Sunburst Arc at . Despite being very bright, it appears in only one of the twelve lensed images of the sou…

astro-ph.GA2024★ 3 cited

The Sunburst Arc with JWST: III. An Abundance of Direct Chemical Abundances

Brian Welch, T. Emil Rivera-Thorsen, Jane Rigby +11

We measure the gas-phase abundances of the elements He, N, O, Ne, S, Ar, and Fe in an individual H\textsc{ii} region known to be leaking Lyman-continuum photons in the Sunburst Arc…

astro-ph.GA2024★ 2 cited

JWST NIRSpec High-resolution Spectroscopy of MACS0647-JD at z=10.167: Resolved [OII] Doublet and Electron Density in an Early Galaxy

Abdurro'uf, Rebecca L. Larson, Dan Coe +26

We present JWST/NIRSpec high-resolution spectroscopy G395H/F290LP of MACS0647-JD, a gravitationally lensed galaxy merger at . The new spectroscopy, which is acquired for…