activity
20242026
most citedA spectroscopic analysis of the ionizing photon production efficiency in JADES and CEERS: implications for the ionizing photon budget

5 citations · 22 across the 16 of their papers we have counts for

collaborators

19 papers

astro-ph.GA2026

Precise C-N-O Abundances of Individual Galaxies in the First Billion Years from Ultra-Deep, Rest-UV-to-Optical JWST Spectroscopy

Raunaq Singh Rai, Guido Roberts-Borsani, Ryan Sanders +8

We present ultra-deep JWST/NIRSpec spectroscopy of nine star-forming galaxies at in the GOODS-N field, drawn from the Origins of Metal Enrichment in Galaxie…

astro-ph.GA2026

The AURORA Survey: Determining the Production Mechanism for OI Emission in Star-forming Galaxies at Cosmic Noon

Leonardo Clarke, Alice E. Shapley, Zhiwei Shao +11

We analyze deep JWST/NIRSpec observations of 58 star-forming galaxies at in the AURORA survey to investigate the origin of the permitted OI emission feature.…

astro-ph.GA2026

The JADES Mass-Metallicity and Fundamental Metallicity Relations at Using New High-Redshift Metallicity Calibrations

Natalie Lam, Leonardo Clarke, Alice E. Shapley +5

We present measurements of the mass-metallicity relation (MZR) and fundamental metallicity relation (FMR) at using stacked JWST/NIRSpec spectra of 601 star-forming gala…

astro-ph.GA2026

The AURORA Survey: Multiple Balmer and Paschen Emission Lines for Individual Star-forming Galaxies at z=1.5-4.4. II. Implications for Nebular Dust Corrections, Nebular SFRs, and Differential Reddening

Naveen A. Reddy, Alice E. Shapley, Ryan L. Sanders +10

We discuss the implications of the nebular dust attenuation curves derived for 24 galaxies at z=1.5-4.4 with multiple detections of HI Balmer and Paschen recombination emission lin…

astro-ph.GA2026

Balmer Decrements and Nebular-Stellar Reddening in JADES Galaxies at

Shreya Karthikeyan, Leonardo Clarke, Alice E. Shapley +5

We aim to characterize nebular and stellar reddening in star-forming galaxies as a function of global galaxy properties (stellar mass, SFR, metallicity) at . We also…

astro-ph.GA2026

Emission-line Diagnostics at : A Probe of the Ionizing Spectrum and Enhancement Beyond Cosmic Noon

Leonardo Clarke, Natalie Lam, Alice E. Shapley +5

We analyze several key rest-optical emission-line ratios in a sample of 828 galaxies as well as composite spectra from JADES DR3 in the range . These emission-line rat…

astro-ph.GA2025★ 1 cited

The AURORA Survey: The Mass -- Metallicity and Fundamental Metallicity Relations at Based Purely on Direct Metallicities

Ali Ahmad Khostovan, Ryan L. Sanders, Alice E. Shapley +14

We present new constraints on the Mass -- Metallicity (MZR) and Fundamental Metallicity Relations (FMR) using a sample of 34 galaxies at (median ). The…

astro-ph.GA2025

The AURORA Survey: Constraining Chemical Enrichment Pathways at Cosmic Noon with Argon Abundances

Jack Foley, Alice Shapley, Ryan Sanders +11

We present argon abundances from a sample of 46 star-forming galaxies at from the Assembly of Ultradeep Rest-Optical Observations Revealing Astrophysics (AURORA) program.…

astro-ph.GA2025★ 1 cited

The Star-forming Main Sequence and Bursty Star-formation Histories at in JADES and AURORA

Leonardo Clarke, Alice E. Shapley, Natalie Lam +5

We analyze JWST spectroscopic and HST+JWST photometric observations of 659 star-forming galaxies at from DR3 of the JADES survey and the AURORA Cycle 1 program. We measur…

astro-ph.GA2025★ 4 cited

The AURORA Survey: High-Redshift Empirical Metallicity Calibrations from Electron Temperature Measurements at z=2-10

Ryan L. Sanders, Alice E. Shapley, Michael W. Topping +29

We present detections of auroral emission lines of [OIII], [OII], [SIII], and [SII] in deep JWST/NIRSpec spectroscopy for 41 star-forming galaxies at from the AURORA su…

astro-ph.GA2025

MOSDEF-3D: Keck/OSIRIS Maps of the Ionized ISM in Galaxies

Natalie Lam, Alice E. Shapley, Ryan L. Sanders +8

We present spatially-resolved rest-frame optical emission line maps of four galaxies at observed with Keck/OSIRIS to study the physical conditions of the ISM at Cosmic N…

astro-ph.GA2025★ 1 cited

The AURORA Survey: Tracing Galactic Outflows at with JWST/NIRSpec NUV Absorption Lines

Emily Kehoe, Alice E. Shapley, Ryan L. Sanders +13

We probe galactic-scale outflows in star-forming galaxies at drawn from the \textit{JWST}/NIRSpec AURORA program. For the first time, we directly compare outflow prop…

astro-ph.GA2025

The AURORA Survey: The Evolution of Multi-phase Electron Densities at High Redshift

Michael W. Topping, Ryan L. Sanders, Alice E. Shapley +14

We present an analysis of deep /NIRSpec spectra of star-forming galaxies at , observed as part of the AURORA survey. We infer median low-ionization el…

astro-ph.GA2024

The AURORA Survey: An Extraordinarily Mature, Star-forming Galaxy at

Alice E. Shapley, Ryan L. Sanders, Michael W. Topping +28

We present the properties of a massive, large, dusty, metal-rich, star-forming galaxy at z_spec=6.73. GOODSN-100182 was observed with JWST/NIRSpec as part of the AURORA survey, and…

astro-ph.IM2024

Improved Empirical Backgrounds for JWST NIRISS Image/WFSS Data Reduction

Raphael E. Hviding, Ivelina G. Momcheva, Leonardo Clarke

The Near Infrared Imager and Slitless Spectrograph (NIRISS) on the James Webb Space Telescope (JWST) is a versatile instrument for collecting imaging and wide-field slitless spectr…

astro-ph.GA2024★ 5 cited

The AURORA Survey: The Nebular Attenuation Curve of a Galaxy at z=4.41 from Ultraviolet to Near-Infrared Wavelengths

Ryan L. Sanders, Alice E. Shapley, Michael W. Topping +28

We use JWST/NIRSpec observations from the Assembly of Ultradeep Rest-optical Observations Revealing Astrophysics (AURORA) survey to constrain the shape of the nebular attenuation c…

astro-ph.GA2024★ 5 cited

A spectroscopic analysis of the ionizing photon production efficiency in JADES and CEERS: implications for the ionizing photon budget

Anthony J. Pahl, Michael W. Topping, Alice Shapley +6

We have used a combined sample of JADES and CEERS objects in order to constrain ionizing photon production efficiency () from JWST/NIRSpec and JWST/NIRCam data. We exa…

astro-ph.GA2024★ 2 cited

The AURORA Survey: A New Era of Emission-line Diagrams with JWST/NIRSpec

Alice E. Shapley, Ryan L. Sanders, Michael W. Topping +28

We present results on the emission-line properties of z=1.4-7.5 star-forming galaxies in the Assembly of Ultradeep Rest-optical Observations Revealing Astrophysics (AURORA) Cycle 1…

astro-ph.GA2024★ 3 cited

The Star-Forming Main Sequence in JADES and CEERS at : Investigating the Burstiness of Star Formation

Leonardo Clarke, Alice E. Shapley, Ryan L. Sanders +5

We have used public JWST/NIRSpec and JWST/NIRCam observations from the CEERS and JADES surveys in order to analyze the star-forming main sequence (SFMS) over the redshift range $1.…