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20232026
most citedThe case for super-Eddington accretion in JWST broad-line AGN during the first billion years

11 citations · 61 across the 37 of their papers we have counts for

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21 papers · 1 filter

astro-ph.GA2024★ 1 cited

On the Average Ultraviolet Emission Line Spectra of High-Redshift Galaxies: Hot and Cold, Carbon-poor, Nitrogen-modest, and Oozing Ionizing Photons

Matthew J. Hayes, Alberto Saldana-Lopez, Annalisa Citro +5

We determine the spectroscopic properties of ~1000 ostensibly star-forming galaxies at redshifts (z=4-10) using prism spectroscopy from JWST/NIRSpec. With rest-wavelength coverage…

astro-ph.GA2024

Synergistic Radiative Transfer Modeling of MgII and Lyα Emission in Multiphase, Clumpy Galactic Environments: Application to Low-Redshift Lyman Continuum Leakers

Zhihui Li, Max Gronke, Timothy Heckman +9

We conducted systematic radiative transfer (RT) modeling of the Mg II doublet line profiles for 33 low-redshift Lyman continuum (LyC) leakers, and Ly modeling for a subset of si…

astro-ph.GA2024★ 8 cited

NGDEEP: The Star Formation and Ionization Properties of Galaxies at

Lu Shen, Casey Papovich, Jasleen Matharu +23

We use JWST/NIRISS slitless spectroscopy from the Next Generation Deep Extragalactic Exploratory Public (NGDEEP) Survey to investigate the physical condition of star-forming galaxi…

astro-ph.GA2024★ 1 cited

A negligible contribution of two luminous ~ 7.5 galaxies to the ionizing photon budget of reionization

S. Gazagnes, J. Chisholm, R. Endsley +12

We present indirect constraints on the absolute escape fraction of ionizing photons () of the system GN 42912 which comprises two luminous galaxies ($M_{\rm…

astro-ph.GA2024

Strong rest-UV emission lines in a "little red dot" AGN at : Early SMBH growth alongside compact massive star formation?

Hollis B. Akins, Caitlin M. Casey, Danielle A. Berg +11

JWST has now revealed a population of broad-line AGN at characterized by a distinctive SED shape, with very red rest-frame optical and very blue rest-frame UV continuum. Whil…

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

CLASSY XI: Tracing Neutral Gas Properties using UV Absorption Lines and 21-cm Observations

Kaelee S. Parker, Danielle A. Berg, Simon Gazagnes +15

Rest-frame far-ultraviolet (FUV) observations from JWST are revolutionizing our understanding of the high-z galaxies that drove reionization and the mechanisms by which they accomp…

astro-ph.GA2024

The Effect of Radiation and Supernovae Feedback on LyC Escape in Local Star-forming Galaxies

Cody A. Carr, Renyue Cen, Claudia Scarlata +25

Feedback is widely recognized as an essential condition for Lyman continuum (LyC) escape in star-forming galaxies. However, the mechanisms by which galactic outflows clear neutral…

astro-ph.GA2024

Shining a Light on the Connections between Galactic Outflows Seen in Absorption and Emission Lines

Xinfeng Xu, Alaina Henry, Timothy Heckman +14

Galactic outflows provide important feedback effects to regulate the evolution of host galaxies. Two primary diagnostics of outflows are broad and/or blueshifted emission and absor…

astro-ph.HE2024★ 11 cited

The case for super-Eddington accretion in JWST broad-line AGN during the first billion years

Erini Lambrides, Rebecca Larson, Kristen Garofali +23

A multitude of JWST studies reveal a surprising over-abundance of over-massive accreting super-massive black holes (SMBHs) -- leading to a deepening tension between theory and obse…

astro-ph.GA2024

First direct carbon abundance measured at in the lensed galaxy MACS0647JD

Tiger Yu-Yang Hsiao, Michael W. Topping, Dan Coe +7

Investigating the metal enrichment in the early universe helps us constrain theories about the first stars and study the ages of galaxies. The lensed galaxy MACS0647JD at $z=10.…

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.SR2024★ 1 cited

Observations of Extremely Metal-Poor O Stars: Weak Winds and Constraints for Evolution Models

O. Grace Telford, John Chisholm, Andreas A. C. Sander +3

Metal-poor massive stars drive the evolution of low-mass galaxies, both locally and at high redshift. However, quantifying the feedback they impart to their local surroundings rema…

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

CLASSY X: Highlighting Differences Between Partial Covering and Semi-Analytic Modeling in the Estimate of Galactic Outflow Properties

M. Huberty, C. Carr, C. Scarlata +17

Feedback driven massive outflows play a crucial role in galaxy evolution by regulating star formation and influencing the dynamics of surrounding media. Extracting outflow properti…

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★ 1 cited

Joint Optical and Infrared Observations of N and O Reveal the Dust-Obscured Gas in Haro 3

Yuguang Chen, Tucker Jones, Ryan L. Sanders +22

Accurate chemical compositions of star-forming regions are a critical diagnostic tool to characterize the star formation history and gas flows which regulate galaxy formation. Howe…

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

CLASSY IX: The Chemical Evolution of the Ne, S, Cl, and Ar Elements

Karla Z. Arellano-Córdova, Danielle A. Berg, Matilde Mingozzi +20

To study the chemical evolution across cosmic epochs, we investigate Ne, S, Cl, and Ar abundance patterns in the COS Legacy Archive Spectroscopic SurveY (CLASSY). CLASSY comprises…

astro-ph.GA2024

Aperture and Resolution Effects on Ultraviolet Star-Forming Properties: Insights from Local Galaxies and Implications for High-Redshift Observations

Ilyse Clark, Danielle A. Berg, Claus Leitherer +2

We present an analysis of the effects of spectral resolution and aperture scales on derived galaxy properties using far-ultraviolet (FUV) spectra of local star-forming galaxies fro…

astro-ph.GA2024★ 1 cited

TEMPLATES: Direct Abundance Constraints for Two Lensed Lyman-Break Galaxies

Brian Welch, Grace M. Olivier, Taylor A. Hutchison +19

Using integrated spectra for two gravitationally lensed galaxies from the JWST TEMPLATES Early Release Science program, we analyze faint auroral lines, which provide direct measure…