Claudia Scarlata
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View article: Power-law Emission-line Wings and Radiation-driven Superwinds in Local Lyman Continuum Emitters
Power-law Emission-line Wings and Radiation-driven Superwinds in Local Lyman Continuum Emitters Open
We investigate broad emission-line wings, reaching ≤800 km s −1 , observed in 26 galaxies with Lyman continuum (LyC) observations, primarily from the Low-redshift Lyman Continuum Survey. Using Magellan/MIKE, Very Large Telescope/X-shooter,…
View article: Parallel Application of Slitless Spectroscopy to Analyze Galaxy Evolution (PASSAGE): Survey Overview
Parallel Application of Slitless Spectroscopy to Analyze Galaxy Evolution (PASSAGE): Survey Overview Open
During the second half of Cycle 1 of the James Webb Space Telescope (JWST), we conducted the Parallel Application of Slitless Spectroscopy to Analyze Galaxy Evolution (PASSAGE) program. PASSAGE received the largest allocation of JWST obser…
View article: Euclid Quick Data Release (Q1). Characteristics and limitations of the spectroscopic measurements
Euclid Quick Data Release (Q1). Characteristics and limitations of the spectroscopic measurements Open
The spectroscopy processing function (SPE PF) of the Euclid pipeline is dedicated to the automatic analysis of 1D spectra to determine redshifts, line fluxes, and spectral classifications. The first Euclid Quick Data Release (Q1) delivers …
View article: The Parallel Ionizing Emissivity Survey (PIE). I. Survey Design and Selection of Candidate Lyman Continuum Leakers at 3.1 < <i>z</i> < 3.5
The Parallel Ionizing Emissivity Survey (PIE). I. Survey Design and Selection of Candidate Lyman Continuum Leakers at 3.1 < <i>z</i> < 3.5 Open
We present the survey design and initial results from the Parallel Ionizing Emissivity (PIE) survey. PIE is a large Hubble Space Telescope survey designed to detect Lyman continuum (LyC) emitting galaxies at 3.1 < z < 3.5 and stack their i…
View article: CLASSY XII: nitrogen enrichment shaped by gas density and feedback
CLASSY XII: nitrogen enrichment shaped by gas density and feedback Open
We investigate the chemical evolution of N/O using a sample of 45 local star-forming galaxies from the CLASSY survey. This sample spans a wide range of galaxy properties, with robust determinations of nitrogen and oxygen abundances via the…
View article: Euclid preparation. Predicting star-forming galaxy scaling relations with the spectral stacking code SpectraPyle
Euclid preparation. Predicting star-forming galaxy scaling relations with the spectral stacking code SpectraPyle Open
We introduce SpectraPyle, a versatile spectral stacking pipeline developed for the Euclid mission's NISP spectroscopic surveys, aimed at extracting faint emission lines and spectral features from large galaxy samples in the Wide and Deep S…
View article: Evaluating Mass Outflow Rate Estimators in FIRE-2 Simulations: Toward a Self-consistent Framework for Spectral-line-based Predictions
Evaluating Mass Outflow Rate Estimators in FIRE-2 Simulations: Toward a Self-consistent Framework for Spectral-line-based Predictions Open
Galactic outflows shape galaxy evolution, but their mass, energy, and momentum transfer remain uncertain. High-resolution spectroscopy can help, but systematic discrepancies hinder model interpretation. In this study, we evaluate the perfo…
View article: The Ly$α$ and Continuum Origins Survey. III. Investigating the link between galaxy morphology, merger properties and LyC escape
The Ly$α$ and Continuum Origins Survey. III. Investigating the link between galaxy morphology, merger properties and LyC escape Open
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 identify the sources that powered it. The Lyman-alpha and C…
View article: The Ly<i>α</i> and Continuum Origins Survey. I. Survey Description and Ly<i>α</i> Imaging
The Ly<i>α</i> and Continuum Origins Survey. I. Survey Description and Ly<i>α</i> Imaging Open
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 reionization and the sources responsible for it. While progre…
View article: Euclid preparation. LXXIV. Euclidised observations of Hubble Frontier Fields and CLASH galaxy clusters
Euclid preparation. LXXIV. Euclidised observations of Hubble Frontier Fields and CLASH galaxy clusters Open
We present ̋S, a novel Python code to generate Euclid realistic mock images in the ̋E and photometric bands based on panchromatic Hubble Space Telescope observations. The software was used to create a simulated database of Euclid images for …
View article: Euclid preparation. Simulating thousands of Euclid spectroscopic skies
Euclid preparation. Simulating thousands of Euclid spectroscopic skies Open
We present two extensive sets of 3500+1000 simulations of dark matter haloes on the past light cone, and two corresponding sets of simulated (`mock') galaxy catalogues that represent the Euclid spectroscopic sample. The simulations were pr…
View article: Identifying the contributors to cosmic reionization with the Habitable World Observatory: LyC escape calibration in faint galaxies
Identifying the contributors to cosmic reionization with the Habitable World Observatory: LyC escape calibration in faint galaxies Open
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 interplay is Cosmic Reionization, where ionizing photons from g…
View article: The Pitfalls of Using Ly<i>α</i> Damping Wings in High-<i>z</i> Galaxy Spectra to Measure the Intergalactic Neutral Hydrogen Fraction
The Pitfalls of Using Ly<i>α</i> Damping Wings in High-<i>z</i> Galaxy Spectra to Measure the Intergalactic Neutral Hydrogen Fraction Open
The Ly α damping wing is seen in absorption against the spectra of high-redshift galaxies. Modeling of this wing is a way to measure the volume neutral hydrogen fraction of the Universe, as well as to measure the strength of H i absorption…
View article: Euclid Quick Data Release (Q1). The Strong Lensing Discovery Engine C: Finding lenses with machine learning
Euclid Quick Data Release (Q1). The Strong Lensing Discovery Engine C: Finding lenses with machine learning Open
Strong gravitational lensing has the potential to provide a powerful probe of astrophysics and cosmology, but fewer than 1000 strong lenses have been confirmed so far. With a resolution covering a third of the sky, the Euclid telescope wil…
View article: Euclid Quick Data Release (Q1). From spectrograms to spectra: The SIR spectroscopic processing function
Euclid Quick Data Release (Q1). From spectrograms to spectra: The SIR spectroscopic processing function Open
The Euclid space mission aims to investigate the nature of dark energy and dark matter by mapping the large-scale structure of the Universe. A key component of Euclid's observational strategy is slitless spectroscopy, which is conducted us…
View article: Challenging the LyC–Ly<i>α</i> Relation: Strong Ly<i>α</i> Emitters without LyC Leakage at <i>z</i> ∼ 2.3
Challenging the LyC–Ly<i>α</i> Relation: Strong Ly<i>α</i> Emitters without LyC Leakage at <i>z</i> ∼ 2.3 Open
The escape fraction of Lyman continuum (LyC) ionizing radiation ( ) is crucial for understanding reionization, yet difficult to measure at z ≳ 4. Recently, studies have focused on calibrating indirect indicators of at z ∼ 0…
View article: Systematic Bias in Ionizing Radiation Escape Fraction Measurements from Foreground Large-scale Structures
Systematic Bias in Ionizing Radiation Escape Fraction Measurements from Foreground Large-scale Structures Open
We investigate the relationship between the Ly α forest transmission in the intergalactic medium (IGM) and the environmental density of galaxies, focusing on its implications for the measurement of ionizing radiation escape fractions. Usin…
View article: The Low-redshift Lyman Continuum Survey: The Roles of Stellar Feedback and Interstellar Medium Geometry in LyC Escape
The Low-redshift Lyman Continuum Survey: The Roles of Stellar Feedback and Interstellar Medium Geometry in LyC Escape Open
One of the fundamental questions of cosmology is the origin and mechanism(s) responsible for the reionization of the Universe beyond z ∼ 6. Many studies have focused on Hubble Space Telescope (HST) Cosmic Origins Spectrograph (COS) observa…
View article: Euclid preparation. The impact of redshift interlopers on the two-point correlation function analysis
Euclid preparation. The impact of redshift interlopers on the two-point correlation function analysis Open
The Euclid survey aims to measure the spectroscopic redshift of emission-line galaxies by identifying the H$\,α$ line in their slitless spectra. This method is sensitive to the signal-to-noise ratio of the line, as noise fluctuations or ot…
View article: Shining a Light on the Connections between Galactic Outflows Seen in Absorption and Emission Lines
Shining a Light on the Connections between Galactic Outflows Seen in Absorption and Emission Lines Open
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 absorption lines. Even though well-established methods exist to …
View article: The JWST/PASSAGE Survey: Testing Reionization Histories with JWST’s First Unbiased Survey for Ly<i>α</i> Emitters at Redshifts 7.5–9.5
The JWST/PASSAGE Survey: Testing Reionization Histories with JWST’s First Unbiased Survey for Ly<i>α</i> Emitters at Redshifts 7.5–9.5 Open
Ly α emission is one of a few observable features of galaxies that can trace the neutral hydrogen content in the Universe during the Epoch of Reionization (EoR). To accomplish this, we need an efficient way to survey for Ly α emitters (LAE…
View article: BEACON: JWST NIRCam Pure-parallel Imaging Survey. I. Survey Design and Initial Results
BEACON: JWST NIRCam Pure-parallel Imaging Survey. I. Survey Design and Initial Results Open
We introduce the Bias-free Extragalactic Analysis for Cosmic Origins with NIRCam (BEACON) survey, a JWST Cycle 2 program allocated up to 600 pure-parallel hours of observations. BEACON explores high-latitude areas of the sky with JWST/NIRC…
View article: Recent Star Formation in 0.5 < <i>z</i> < 1.5 Quiescent Galaxies
Recent Star Formation in 0.5 < <i>z</i> < 1.5 Quiescent Galaxies Open
Observations of massive, quiescent galaxies reveal a relatively uniform evolution: following prolific star formation in the early Universe, these galaxies quench and transition to their characteristic quiescent state in the local Universe.…
View article: Erratum: “The Impact of Cosmic Variance on Inferences of Global Neutral Fraction Derived from Ly<i>α</i> Luminosity Functions during Reionization” (2023, ApJ, 953, 29)
Erratum: “The Impact of Cosmic Variance on Inferences of Global Neutral Fraction Derived from Ly<i>α</i> Luminosity Functions during Reionization” (2023, ApJ, 953, 29) Open
View article: The Parallel Ionizing Emissivity Survey (PIE). I. Survey design and selection of candidate Lyman Continuum leakers at 3.1
The Parallel Ionizing Emissivity Survey (PIE). I. Survey design and selection of candidate Lyman Continuum leakers at 3.1 Open
We present the survey design and initial results from the Parallel Ionizing Emissivity (PIE) survey. PIE is a large HST survey designed to detect Lyman continuum (LyC) emitting galaxies at 3.1$<$ z $<$3.5 and stack their images in order to…
View article: The Effect of Radiation and Supernovae Feedback on LyC Escape in Local Star-forming Galaxies
The Effect of Radiation and Supernovae Feedback on LyC Escape in Local Star-forming Galaxies Open
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 gas and dust remain unclear. In this paper, we model the Mg…
View article: Euclid Quick Data Release (Q1), A first look at the fraction of bars in massive galaxies at $z<1$
Euclid Quick Data Release (Q1), A first look at the fraction of bars in massive galaxies at $z<1$ Open
Stellar bars are key structures in disc galaxies, driving angular momentum redistribution and influencing processes such as bulge growth and star formation. Quantifying the bar fraction as a function of redshift and stellar mass is therefo…
View article: Clump formation in ram-pressure stripped galaxies: Evidence from mass function
Clump formation in ram-pressure stripped galaxies: Evidence from mass function Open
Context. The mass function (MF) of young stellar clumps (age ≲ 200 Myr) is an indicator of the mechanism driving the collapse of the interstellar medium (ISM) into the giant molecular clouds. Typically, the MF of clumps in main-sequence ga…
View article: Euclid Quick Data Release (Q1). The Strong Lensing Discovery Engine E -- Ensemble classification of strong gravitational lenses: lessons for Data Release 1
Euclid Quick Data Release (Q1). The Strong Lensing Discovery Engine E -- Ensemble classification of strong gravitational lenses: lessons for Data Release 1 Open
The Euclid Wide Survey (EWS) is expected to identify of order $100\,000$ galaxy-galaxy strong lenses across $14\,000$deg$^2$. The Euclid Quick Data Release (Q1) of $63.1$deg$^2$ Euclid images provides an excellent opportunity to test our l…
View article: <i>Euclid</i>: The Early Release Observations Lens Search Experiment
<i>Euclid</i>: The Early Release Observations Lens Search Experiment Open
We investigated the ability of the Euclid telescope to detect galaxy-scale gravitational lenses. To do so, we performed a systematic visual inspection of the 0.7 deg 2 Euclid Early Release Observations data towards the Perseus cluster usin…