Anne Verhamme
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View article: Intergalactic medium tomography with the Sunburst Arc
Intergalactic medium tomography with the Sunburst Arc Open
Gravitational lensing has transformed the field of gas tomography in the intergalactic medium (IGM) and circumgalactic medium (CGM). Here, we use the brightest lensed galaxy identified to date, the Sunburst Arc (z $\approx$ 2.37), to const…
View article: Breaking Through the Cosmic Fog: JWST/NIRSpec Constraints on Ionizing Photon Escape in Reionization-Era Galaxies
Breaking Through the Cosmic Fog: JWST/NIRSpec Constraints on Ionizing Photon Escape in Reionization-Era Galaxies Open
The escape fraction of Lyman continuum photons (fesc(LyC)) is the last key unknown in our understanding of cosmic reionization. Directly estimating the escape fraction (fesc) of ionizing photons in the epoch of reionization (EoR) is imposs…
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: 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: MUSEQuBES: Connecting H <scp>i</scp> Absorption with Ly<i>α</i> Emitters at <i>z</i> ≈ 3.3
MUSEQuBES: Connecting H <span>i</span> Absorption with Ly<i>α</i> Emitters at <i>z</i> ≈ 3.3 Open
We present a comprehensive analysis of H i absorption around 96 Ly α emitters (LAEs) at z ≈ 3.3 (median Ly α luminosity ≈10 42 erg s −1 ). These LAEs were identified within eight MUSE fields, each on the sky and centered on a bright …
View article: A Simulated Galaxy Laboratory: Exploring the Observational Effects on UV Spectral Absorption Line Measurements
A Simulated Galaxy Laboratory: Exploring the Observational Effects on UV Spectral Absorption Line Measurements Open
Ultraviolet absorption line spectroscopy is a sensitive diagnostic for the properties of interstellar and circumgalactic gas. Down-the-barrel observations, where the absorption is measured against the galaxy itself, are commonly used to st…
View article: The MUSE eXtremely Deep Field
The MUSE eXtremely Deep Field Open
Context. The hydrogen Lyman-alpha (Ly α ) line, the brightest rest-frame ultraviolet line of high-redshift galaxies, exhibits a large variety of shapes, which is due to factors at different scales, from the interstellar medium to the inter…
View article: A Simulated Galaxy Laboratory: Exploring the Observational Effects on UV Spectral Absorption Line Measurements
A Simulated Galaxy Laboratory: Exploring the Observational Effects on UV Spectral Absorption Line Measurements Open
Ultraviolet absorption line spectroscopy is a sensitive diagnostic for the properties of interstellar and circumgalactic gas. Down-the-barrel observations, where the absorption is measured against the galaxy itself, are commonly used to st…
View article: Erratum: “The Low-redshift Lyman Continuum Survey. I. New, Diverse Local Lyman Continuum Emitters” (2022, ApJS, 260, 1)
Erratum: “The Low-redshift Lyman Continuum Survey. I. New, Diverse Local Lyman Continuum Emitters” (2022, ApJS, 260, 1) Open
International audience
View article: The MUSE Extremely Deep Field: Classifying the Spectral Shapes of Lya Emitting Galaxies
The MUSE Extremely Deep Field: Classifying the Spectral Shapes of Lya Emitting Galaxies Open
The Hydrogen Lyman-alpha (Lya) line shows a large variety of shapes which is caused by factors at different scales, from the interstellar medium to the intergalactic medium. This work aims to provide a systematic inventory and classificati…
View article: MUSEQuBES: Connecting HI absorption with Ly$α$ emitters at $z \approx 3.3$
MUSEQuBES: Connecting HI absorption with Ly$α$ emitters at $z \approx 3.3$ Open
We present a comprehensive analysis of HI absorption around 96 lya emitters (LAEs) at $z\approx3.3$ (median lya luminosity $\approx10^{42}$ erg.s$^{-1}$). These LAEs were identified within 8 MUSE fields, each $1'\times1'$ on the sky and ce…
View article: The MUSE eXtremely Deep Field: Detections of circumgalactic Si II* emission at z ≳ 2
The MUSE eXtremely Deep Field: Detections of circumgalactic Si II* emission at z ≳ 2 Open
Context. The circumgalactic medium (CGM) serves as a baryon reservoir that connects galaxies to the intergalactic medium and fuels star formation. The spatial distribution of the metal-enriched cool CGM has not yet been directly revealed a…
View article: Multivariate Predictors of Lyman Continuum Escape. II. Predicting Lyman Continuum Escape Fractions for High-redshift Galaxies*
Multivariate Predictors of Lyman Continuum Escape. II. Predicting Lyman Continuum Escape Fractions for High-redshift Galaxies* Open
JWST is uncovering the properties of ever-increasing numbers of galaxies at z > 6, during the epoch of reionization. Connecting these observed populations to the process of reionization requires understanding how efficiently they produce L…
View article: Spatially resolved spectroscopic analysis of Ly<i>α</i> haloes
Spatially resolved spectroscopic analysis of Ly<i>α</i> haloes Open
The extended Ly α haloes (LAHs) have been found to be prevalent around high-redshift star-forming galaxies. However, the origin of the LAHs is still a subject of debate. The spatially resolved analysis of Ly α profiles provides an importan…
View article: The Low-Redshift Lyman Continuum Survey: The Roles of Stellar Feedback and ISM Geometry in LyC Escape
The Low-Redshift Lyman Continuum Survey: The Roles of Stellar Feedback and ISM 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 $z\sim6$. To address this question, many studies over the past decade have focused on local ($z\sim0.3$) g…
View article: A public grid of radiative transfer simulations for Ly<i>α</i> and metal lines in idealised galactic outflows
A public grid of radiative transfer simulations for Ly<i>α</i> and metal lines in idealised galactic outflows Open
The vast majority of star-forming galaxies are surrounded by large reservoirs of gas ejected from the interstellar medium. Ultraviolet absorption and emission lines represent powerful diagnostics to constrain the cool phase of these outflo…
View article: Witnessing an extreme, highly efficient galaxy formation mode with resolved Lyman-<i>α</i> and Lyman-continuum emission
Witnessing an extreme, highly efficient galaxy formation mode with resolved Lyman-<i>α</i> and Lyman-continuum emission Open
J1316+2614 at z = 3.613 is the UV-brightest ( M UV = −24.7) and strongest Lyman continuum-emitting ( f esc LyC ≈ 90%) star-forming galaxy known; it also shows signatures of inflowing gas from its blue-dominated Ly α profile. We present hig…
View article: A galactic outflow traced by its extended Mg II emission out to a ∼30 kpc radius in the Hubble Ultra Deep Field with MUSE
A galactic outflow traced by its extended Mg II emission out to a ∼30 kpc radius in the Hubble Ultra Deep Field with MUSE Open
We report the discovery of a rare Mg II λλ 2796, 2803 doublet emission halo around a star-forming galaxy with log( M ⋆ /M ⊙ ) = 10.3 ± 0.3 at z = 0.737 in deep (9.94 h) VLT/MUSE data from the MUSE-HUDF mosaic. While the central region prom…
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: The Blue Multi Unit Spectroscopic Explorer (BlueMUSE) on the VLT: science drivers and overview of instrument design (Erratum)
The Blue Multi Unit Spectroscopic Explorer (BlueMUSE) on the VLT: science drivers and overview of instrument design (Erratum) Open
International audience
View article: A galactic outflow traced by its extended Mg II emission out to a $\sim30$ kpc radius in the Hubble Ultra Deep Field with MUSE
A galactic outflow traced by its extended Mg II emission out to a $\sim30$ kpc radius in the Hubble Ultra Deep Field with MUSE Open
We report the discovery of a rare Mg II $λ$$λ$ 2796, 2803 doublet emission halo around a star forming galaxy with $\log (M_\star$/M$_\odot) = 10.3 \pm 0.3$ at $z=0.737$ in deep (9.94 h) VLT/MUSE data from the MUSE-HUDF mosaic. While the ce…
View article: Multivariate Predictors of Lyman Continuum Escape. I. A Survival Analysis of the Low-redshift Lyman Continuum Survey*
Multivariate Predictors of Lyman Continuum Escape. I. A Survival Analysis of the Low-redshift Lyman Continuum Survey* Open
To understand how galaxies reionized the Universe, we must determine how the escape fraction of Lyman continuum (LyC) photons ( f esc ) depends on galaxy properties. Using the z ∼ 0.3 Low-redshift Lyman Continuum Survey (LzLCS), we develop…
View article: A public grid of radiative transfer simulations for Lyman-alpha and metal lines in idealised galactic outflows
A public grid of radiative transfer simulations for Lyman-alpha and metal lines in idealised galactic outflows Open
The vast majority of star-forming galaxies are surrounded by large reservoirs of gas ejected from the interstellar medium. Ultraviolet absorption and emission lines represent powerful diagnostics to constrain the cool phase of these outflo…
View article: Constraints on the Lyman Continuum Escape from Low-mass Lensed Galaxies at 1.3 ≤ z ≤ 3.0
Constraints on the Lyman Continuum Escape from Low-mass Lensed Galaxies at 1.3 ≤ z ≤ 3.0 Open
Low-mass galaxies can significantly contribute to reionization due to their potentially high Lyman continuum (LyC) escape fraction and relatively high space density. We present a constraint on the LyC escape fraction from low-mass galaxies…
View article: Witnessing an extreme, highly efficient galaxy formation mode with resolved Ly$α$ and LyC emission
Witnessing an extreme, highly efficient galaxy formation mode with resolved Ly$α$ and LyC emission Open
J1316+2614 at z=3.613 is the UV-brightest ($M_{UV}$ = -24.7) and strongest Lyman continuum (LyC, $f_{esc}^{LyC} \approx$ 90%) emitting star-forming galaxy known, showing also signatures of inflowing gas from its blue-dominated Ly$α$ profil…
View article: The Blue Multi Unit Spectroscopic Explorer (BlueMUSE) on the VLT: science drivers and overview of instrument design
The Blue Multi Unit Spectroscopic Explorer (BlueMUSE) on the VLT: science drivers and overview of instrument design Open
BlueMUSE is a blue-optimised, medium spectral resolution, panoramic integral\nfield spectrograph under development for the Very Large Telescope (VLT). With\nan optimised transmission down to 350 nm, spectral resolution of R$\\sim$3500 on\n…
View article: Comparing the VANDELS Sample to a Zoom-in Radiative Hydrodynamical Simulation: Using the Si ii and C ii Line Spectra as Tracers of Galaxy Evolution and Lyman Continuum Leakage
Comparing the VANDELS Sample to a Zoom-in Radiative Hydrodynamical Simulation: Using the Si ii and C ii Line Spectra as Tracers of Galaxy Evolution and Lyman Continuum Leakage Open
We compare mock ultraviolet C ii and Si ii absorption and emission line features generated using a ∼10 9 M ⊙ virtual galaxy with observations of 131 z ∼ 3 galaxies from the vandels survey. We find that the mock spectra reproduce reasonably…
View article: Multivariate Predictors of LyC Escape II: Predicting LyC Escape Fractions for High-Redshift Galaxies
Multivariate Predictors of LyC Escape II: Predicting LyC Escape Fractions for High-Redshift Galaxies Open
JWST is uncovering the properties of ever increasing numbers of galaxies at z>6, during the epoch of reionization. Connecting these observed populations to the process of reionization requires understanding how efficiently they produce Lym…
View article: Multivariate Predictors of LyC Escape I: A Survival Analysis of the Low-redshift Lyman Continuum Survey
Multivariate Predictors of LyC Escape I: A Survival Analysis of the Low-redshift Lyman Continuum Survey Open
To understand how galaxies reionized the universe, we must determine how the escape fraction of Lyman Continuum (LyC) photons (fesc) depends on galaxy properties. Using the z~0.3 Low-redshift Lyman Continuum Survey (LzLCS), we develop and …
View article: The MUSE eXtremely Deep Field: Detections of circumgalactic SiII*\n emission at z>~2
The MUSE eXtremely Deep Field: Detections of circumgalactic SiII*\n emission at z>~2 Open
The circumgalactic medium (CGM) serves as a baryon reservoir that connects\ngalaxies to the intergalactic medium and fuels star formation. The spatial\ndistribution of the metal-enriched cool CGM has not yet been directly revealed\nat cosm…