180 citations · 975 across the 42 of their papers we have counts for
45 papers
Recovering Ionizing Photon Escape and Galaxy Scaling Relations in the LzLCS via Si II and C II Absorption Lines and Mock Spectra from a Radiation-Hydrodynamic Simulation
John Trevino, Simon Gazagnes, Danielle A. Berg +7
In this work, we use a radiation-hydrodynamic simulation of a single virtual galaxy to study Si II and C II line profiles seen in stacked HST/COS spectra of 58…
The Evolution of Low-Ionization Electron Densities in Galaxies Across Cosmic Epochs
Mabel G. Stephenson, John Chisholm, Alberto Saldana-Lopez +12
We investigate the low-ionization electron density in the interstellar medium of galaxies across , derived with the [O II] and [S II]$λ\lambda6718…
Early Exploration of the Scientific Discovery Space for the Habitable Worlds Observatory
Courtney D. Dressing, Danica Adams, Evelyne Alecian +324
The Habitable Worlds Observatory (HWO) is a future NASA flagship mission concept identified by the Astro2020 Decadal Survey as the highest priority for large space missions. HWO sh…
The short and long of iPhoton science for a boosted Hubble
Stephan R. McCandliss, Jack Ford, Anne E. Jaskot +7
Boosting the Hubble Space Telescope (HST) will provide unique opportunities to carry out precursor science for the Habitable Worlds Observatory (HWO). Chief among them are science…
Astronomical Advantages of a Boost Mission to Facilitate HST Science into the 2030s: Imaging the Circumgalactic Medium of Galaxies
Matthew J. Hayes, Kate H. R. Rubin, Michelle A. Berg +20
We present the case for imaging ultraviolet line emission from highly ionized metals and HI Lya in the circumgalactic medium of galaxies, should the Hubble Space Telescope receive…
Nitrogen abundances in star-forming galaxies 2.2 Gyr after the Big Bang are not elevated
D. Schaerer, Y. I. Izotov, R. Marques-Chaves +22
Using deep medium-resolution JWST rest-optical spectra of a sample of typical star-forming galaxies (Lyman break galaxies and Lyman- emitters) from the LyC22 survey at $z \sim 3…
Resolving the Origins and Pathways of Ionizing Radiation Escape with UV Integral Field Spectroscopy
Cody Carr, Renyue Cen, Brian Fleming +4
The Epoch of Reionization marks the last major phase transition in the early Universe, during which the majority of neutral hydrogen once filling the intergalactic medium was ioniz…
Lyman Continuum escaping from in-situ formed stars in a tidal bridge at z = 3
T. E. Rivera-Thorsen, A. Le Reste, M. J. Hayes +11
We present an analysis of archival JWST NIRSpec IFS and HST imaging observations of the z = 3 Lyman-Continuum Emitter (LCE) candidate LACES104037. We show that a nearby galaxy, den…
Finding He II: Testing Novel Models of Binary Populations across Cosmic Time
Beryl Hovis-Afflerbach, Allison L. Strom, Alberto Saldana-Lopez +1
Our understanding of massive stars remains incomplete. Many high-z galaxies and nearby analogs exhibit strong He II emission, indicating an abundance of photons with energies >54.4…
CLASSY XIII. Cutting through the Clouds - Comparing Indirect Tracers of Ionizing Photon Escape
Kaelee S. Parker, Danielle A. Berg, John Chisholm +25
The Epoch of Reionization (EoR) provides critical insights into the role of early galaxies in shaping the ionization state of the universe. However, because of the opacity of the i…
Supernovae Driven Winds Impede Lyman Continuum Escape from Dwarf Galaxies in First 10 Myr
Cody Carr, Renyue Cen, Stephan McCandliss +25
Observations suggest that UV-bright, compact star-forming galaxies produce enough ionizing (Lyman continuum; LyC) photons to reionize the Universe. Yet, the efficiency of LyC escap…
The Ly and Continuum Origins Survey. III. Investigating the Link between Galaxy Morphology, Merger Properties and LyC Escape
Alexandra Le Reste, Anne E. Jaskot, Jordanne Brazie +20
Characterizing the mechanisms and galaxy properties conducive to the emission and escape of ionizing (LyC) emission is necessary to accurately model the Epoch of Reionization, and…
Identifying the contributors to cosmic reionization with the Habitable World Observatory: LyC escape calibration in faint galaxies
Annalisa Citro, Cody. A. Carr, Yumi Choi +9
Investigating how small-scale physical processes shape large-scale astrophysical phenomena is one of the key science themes of the Astro2020 decadal Survey. An example of this inte…
CLASSY XII: Nitrogen Enrichment Shaped by Gas Density and Feedback
Karla Z. Arellano-Córdova, Danielle A. Berg, Matilde Mingozzi +25
We investigate the chemical evolution of N/O using a sample of 45 local star-forming galaxies (SFGs) from the CLASSY survey. This sample spans a wide range of galaxy properties, wi…
Evolution of the Ionizing Photon Luminosity Function
Stephan R. McCandliss, Swara Ravindranath, Sangeeta Malhotra +6
Counting the number and brightness of ionizing radiation sources out to a redshift of z ~ 1.2 will revolutionize our understanding of how the ionizing background is created and sus…
How Do Ionizing Photons Escape from Star-Forming Galaxies?
Cody Carr, Renyue Cen, Sophia Flury +3
The Epoch of Reionization marks the last major phase transition in the early Universe, during which the majority of neutral hydrogen once filling the intergalactic medium was ioniz…
Power-law Emission-line Wings and Radiation-Driven Superwinds in Local Lyman Continuum Emitters
Lena Komarova, Sally Oey, Rui Marques-Chaves +27
We investigate broad emission-line wings, reaching , observed in 26 galaxies with Lyman continuum (LyC) observations, primarily from the Low-redshift Lyman C…
The Lyman-alpha and Continuum Origins Survey II: the connection between the escape of ionizing radiation and Lyman-alpha halos in star-forming galaxies
A. Saldana-Lopez, M. J. Hayes, A. Le Reste +24
One of the current challenges in galaxy evolution studies is to establish the mechanisms that govern the escape of ionizing radiation from galaxies. Here, we investigate the connec…
The Lyman-alpha and Continuum Origins Survey. I. Survey description and Ly imaging
Alexandra Le Reste, Claudia Scarlata, Matthew Hayes +25
Understanding the mechanisms driving the escape of ionizing or Lyman continuum (LyC) emission from the interstellar medium of galaxies is necessary to constrain the evolution of re…
Little impact of mergers and galaxy morphology on the production and escape of ionizing photons in the early Universe
S. Mascia, L. Pentericci, M. Llerena +28
Compact, star-forming galaxies with high star formation rate surface densities () are often efficient Lyman continuum (LyC) emitters at , likely as inten…
New Ionization Models and the Shocking Nitrogen Excess at z > 5
Sophia R. Flury, Karla Z. Arellano-Córdova, Edward C. Moran +1
The new era of galaxy evolution studies hearkened in by JWST has led to the discovery of z > 5 galaxies exhibiting excess nitrogen with log(N/O)~1 dex or more than expected from lo…
A Simulated Galaxy Laboratory: Exploring the Observational Effects on UV Spectral Absorption Line Measurements
R. Michael Jennings, Alaina Henry, Valentin Mauerhofer +13
Ultraviolet absorption line spectroscopy is a sensitive diagnostic for the properties of interstellar and circumgalactic gas. Down-the-barrel observations, where the absorption is…
Lyman Continuum leakage from massive leaky starbursts: A different class of emitters?
Namrata Roy, Timothy Heckman, Alaina Henry +11
The origin of Lyman Continuum (LyC) photons responsible for reionizing the universe remains a mystery, with the fraction of escaping LyC photons from galaxies at z 6 to 12 be…
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…