activity
20152026
most citedAn uncontaminated measurement of the escaping Lyman continuum at

110 citations · 378 across the 23 of their papers we have counts for

collaborators

25 papers

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 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.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

The AURORA Survey: Ionizing Photon Production Efficiency with Minimal Nebular Dust Attenuation Systematics

Anthony J. Pahl, Alice Shapley, Naveen A. Reddy +11

We present ionizing photon production efficiencies () for 63 z=1.5-6.9 star-forming galaxies using precise nebular dust attenuation corrections from the JWST/AURORA su…

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★ 1 cited

The AURORA Survey: Robust Helium Abundances at High Redshift Reveal A Subpopulation of Helium-Enhanced Galaxies in the Early Universe

Danielle A. Berg, Ryan L. Sanders, Alice E. Shapley +16

We present the first robust helium (He) abundance measurements in star-forming galaxies at redshifts using deep, moderate-resolution JWST/NIRSpec spectr…

astro-ph.GA2025★ 5 cited

The JWST/AURORA Survey: Multiple Balmer and Paschen Emission Lines for Individual Star-forming Galaxies at z=1.5-4.4. I. A Diversity of Nebular Attenuation Curves and Evidence for Non-Unity Dust Covering Fractions

Naveen A. Reddy, Alice E. Shapley, Ryan L. Sanders +14

We present the nebular attenuation curves and dust covering fractions for 24 redshift z=1.5-4.4 star-forming galaxies using multiple Balmer and Paschen lines from the JWST/AURORA s…

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

Stacking PANCAKEZ: sPectroscopic Analysis with NirspeC stAcKs in the Epoch of reioniZation. Weak ISM Absorption and Implications for Ionizing Photon Escape at

Kelsey S. Glazer, Tucker Jones, Yuguang Chen +7

We present a spectral stacking analysis of galaxies at observed with the James Webb Space Telescope (JWST). We curate a sample of galaxies spanning redshifts $z_{\rm…

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.GA2024★ 1 cited

The Ancient Star Formation History of the Extremely Low-Mass Galaxy Leo P: An Emerging Trend of a Post-Reionization Pause in Star Formation

Kristen B. W. McQuinn, Max J. B. Newman, Evan D. Skillman +12

Isolated, low-mass galaxies provide the opportunity to assess the impact of reionization on their star formation histories (SFHs) without the ambiguity of environmental processes a…

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

The First Combined H and Rest-UV Spectroscopic Probe of Galactic Outflows at High Redshift

Emily Kehoe, Alice E. Shapley, N. M Forster Schreiber +6

We investigate the multi-phase structure of gas flows in galaxies. We study 80 galaxies during the epoch of peak star formation () using data from Keck/LRIS and V…

astro-ph.GA2024★ 1 cited

Lyα profile shape as an escape-fraction diagnostic at high redshift

Anthony J. Pahl, Alice E. Shapley, Charles C. Steidel +3

While the shape of the Ly profile is viewed as one of the best tracers of ionizing-photon escape fraction () within low redshift (z~0.3) surveys of the Lyman continuum,…

astro-ph.GA2022★ 31 cited

The connection between the escape of ionizing radiation and galaxy properties at z~3 in the Keck Lyman Continuum Spectroscopic Survey

Anthony J. Pahl, Alice Shapley, Charles C. Steidel +4

The connection between the escape fraction of ionizing radiation () and the properties of galaxies, such as stellar mass (M*), age, star-formation rate (SFR), and dust con…

astro-ph.GA2022★ 11 cited

Searching for the connection between ionizing-photon escape and the surface density of star formation at z~3

Anthony J. Pahl, Alice Shapley, Charles C. Steidel +2

The connection between the escape fraction of ionizing photons () and star-formation rate surface density () is a key input for reionization models, but r…

astro-ph.GA2021★ 41 cited

The mass-metallicity relation at z~1-2 and its dependence on star formation rate

Alaina Henry, Marc Rafelski, Ben Sunnquist +24

We present a new measurement of the gas-phase mass-metallicity relation (MZR), and its dependence on star formation rates (SFRs) at 1.3 < z < 2.3. Our sample comprises 1056 galaxie…

astro-ph.GA2021★ 41 cited

The KBSS-KCWI Survey: The connection between extended Ly halos and galaxy azimuthal angle at

Yuguang Chen, Charles C. Steidel, Dawn K. Erb +9

We present the first statistical analysis of kinematically-resolved, spatially-extended Ly emission around galaxies in the Keck Baryonic Structure Survey (KBSS) using…

astro-ph.GA2021★ 110 cited

An uncontaminated measurement of the escaping Lyman continuum at

Anthony J. Pahl, Alice Shapley, Charles C. Steidel +2

Observations of reionization-era analogs at are a powerful tool for constraining reionization. Rest-ultraviolet observations are particularly useful, in which both direct…

astro-ph.GA2019★ 42 cited

The Redshift Evolution of Rest-UV Spectroscopic Properties to z~5

Anthony J. Pahl, Alice Shapley, Andreas L. Faisst +5

We perform a comprehensive analysis of the redshift evolution of the rest-UV spectra of star-forming galaxies out to z~5. We combine new z~5 measurements of HI Ly and low- and h…