Éric Emsellem
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View article: The GECKOS Survey: resolved, multiphase observations of mass loading and gas density in the galactic wind of NGC 4666
The GECKOS Survey: resolved, multiphase observations of mass loading and gas density in the galactic wind of NGC 4666 Open
We present a multiphase, resolved study of the galactic wind extending from the nearby starburst galaxy NGC 4666. For this, we use VLT/MUSE observations from the GECKOS program and H i data from the WALLABY survey. We identify both ionized…
View article: The PHANGS-MUSE/HST-Hα nebulae catalogue. Parsec-scale resolved structure, physical conditions, and stellar associations across nearby galaxies
The PHANGS-MUSE/HST-Hα nebulae catalogue. Parsec-scale resolved structure, physical conditions, and stellar associations across nearby galaxies Open
We present the PHANGS-MUSE/HST-Hα nebulae catalogue, comprising spatially resolved nebulae across 19 nearby star-forming galaxies (D<20,Mpc), based on high-resolution Hα imaging from HST, homogenised to a fixed (10,pc) physical resolution …
View article: The PHANGS-MUSE/HST-Halpha Nebulae Catalogue
The PHANGS-MUSE/HST-Halpha Nebulae Catalogue Open
We present the PHANGS-MUSE/HST-Halpha nebulae catalogue, comprising 5177 spatially resolved nebulae across 19 nearby star-forming galaxies (< 20 Mpc), based on high-resolution Halpha imaging from HST, homogenised to a fixed 10 pc resolutio…
View article: Characterization of Two Cool Galaxy Outflow Candidates Using Mid-infrared Emission from Polycyclic Aromatic Hydrocarbons
Characterization of Two Cool Galaxy Outflow Candidates Using Mid-infrared Emission from Polycyclic Aromatic Hydrocarbons Open
We characterize two candidate cool galactic outflows in two relatively low-mass, highly inclined Virgo cluster galaxies: NGC 4424 and NGC 4694. Previous analyses of observations using the Atacama Large Millimeter/submillimeter Array carbon…
View article: Distance measurements from the internal dynamics of globular clusters: Application to the Sombrero galaxy (M 104)
Distance measurements from the internal dynamics of globular clusters: Application to the Sombrero galaxy (M 104) Open
Globular clusters (GCs) are dense star clusters found in all massive galaxies. Recent work has established that they follow a tight relation between their internal stellar velocity dispersion $σ$ and luminosity, enabling accurate distance …
View article: Characterization of Two Cool Galaxy Outflow Candidates Using Mid-Infrared Emission from Polycyclic Aromatic Hydrocarbons
Characterization of Two Cool Galaxy Outflow Candidates Using Mid-Infrared Emission from Polycyclic Aromatic Hydrocarbons Open
We characterize two candidate cool galactic outflows in two relatively low mass, highly inclined Virgo cluster galaxies: NGC4424 and NGC4694. Previous analyses of observations using the Atacama Large Millimeter Array (ALMA) carbon monoxide…
View article: Globular clusters in M 104: Tracing kinematics and metallicities from the centre to the halo
Globular clusters in M 104: Tracing kinematics and metallicities from the centre to the halo Open
As ancient star clusters, globular clusters (GCs) are regarded as powerful tracers of galaxy evolution and assembly. Due to their brightness and compact sizes, GCs are employed to probe the kinematics and stellar population properties of g…
View article: Azimuthal offsets in spiral arms of nearby galaxies
Azimuthal offsets in spiral arms of nearby galaxies Open
Spiral arms play a central role in disc galaxies, but their dynamical nature remains a long-standing open question. Azimuthal offsets between molecular gas and star formation are expected if gas crosses spiral arms, as predicted by quasi-s…
View article: Extreme cloud collisions in nearby barred galaxies
Extreme cloud collisions in nearby barred galaxies Open
The inner regions of the Milky Way are known to contain an enigmatic population of prominent molecular clouds characterised by extremely broad lines. The physical origin of these ''extended velocity features'' (EVFs) is still debated, alth…
View article: Reconciling extragalactic star formation efficiencies with theory: Insights from PHANGS
Reconciling extragalactic star formation efficiencies with theory: Insights from PHANGS Open
New extragalactic measurements of the cloud population-averaged star formation efficiency per free-fall time, ϵ ff , from PHANGS show little sign of a theoretically predicted dependence on the gas virial level and weak variation with cloud…
View article: Nouvelles images de la galaxie du Sculpteur : mille et une couleurs à 11 millions d’années-lumière de la Terre
Nouvelles images de la galaxie du Sculpteur : mille et une couleurs à 11 millions d’années-lumière de la Terre Open
View article: Extreme cloud collisions in nearby barred galaxies
Extreme cloud collisions in nearby barred galaxies Open
The inner regions of the Milky Way are known to contain an enigmatic population of prominent molecular clouds characterized by extremely broad lines. The physical origin of these ‘extended velocity features’ (EVFs) is still debated, althou…
View article: Simulating nearby disc galaxies on the main star formation sequence
Simulating nearby disc galaxies on the main star formation sequence Open
Recent hydrodynamical simulations of isolated barred disc galaxies have suggested a structural change in the distribution of the interstellar medium (ISM) around a stellar mass M * of 10 10 M ⊙ . In the higher-mass regime ( M ∗ ≥ 10 10 M ⊙…
View article: Correction to: The PHANGS–MUSE nebular catalogue
Correction to: The PHANGS–MUSE nebular catalogue Open
View article: Polycyclic Aromatic Hydrocarbon and CO(2–1) Emission at 50–150 pc Scales in 70 Nearby Galaxies
Polycyclic Aromatic Hydrocarbon and CO(2–1) Emission at 50–150 pc Scales in 70 Nearby Galaxies Open
Combining Atacama Large Millimeter/submillimeter Array CO(2–1) mapping and JWST near- and mid-infrared imaging, we characterize the relationship between CO(2–1) and polycyclic aromatic hydrocarbon (PAH) emission at ≈100 pc resolution in 70…
View article: Revisiting the globular clusters of NGC 1052-DF2
Revisiting the globular clusters of NGC 1052-DF2 Open
The ultra-diffuse galaxy (UDG) NGC 1052-DF2 has captured the interest of astronomers ever since the low velocity dispersion measured from ten globular clusters (GCs) suggested a low dark matter fraction. Also, its GC system was found to be…
View article: The PHANGS-HST-H<i>α</i> Survey: Warm Ionized Gas Physics at High Angular Resolution in Nearby Galaxies with the Hubble Space Telescope
The PHANGS-HST-H<i>α</i> Survey: Warm Ionized Gas Physics at High Angular Resolution in Nearby Galaxies with the Hubble Space Telescope Open
The PHANGS project is assembling a comprehensive, multiwavelength data set of nearby (∼5–20 Mpc), massive star-forming galaxies to enable multiphase, multiscale investigations into the processes that drive star formation and galaxy evoluti…
View article: Pearls on a String: Dark and Bright Galaxies on a Strikingly Straight and Narrow Filament
Pearls on a String: Dark and Bright Galaxies on a Strikingly Straight and Narrow Filament Open
We identify a chain of galaxies along an almost straight line in the nearby Universe with a projected length of ~5 Mpc. The galaxies are distributed within projected distances of only 7–105 kpc from the axis of the identified filament. The…
View article: The Spatial Distribution of Globular Cluster Systems in Early-type Galaxies: Estimation Procedure and Catalog of Properties for Globular Cluster Systems Observed with Deep Imaging Surveys
The Spatial Distribution of Globular Cluster Systems in Early-type Galaxies: Estimation Procedure and Catalog of Properties for Globular Cluster Systems Observed with Deep Imaging Surveys Open
We present an analysis of the spatial distribution of globular cluster (GC) systems of 118 nearby early-type galaxies in the Next Generation Virgo Cluster Survey and Mass Assembly of early-Type GaLAxies with their fine Structures survey pr…
View article: The Spatial Distribution of Globular Cluster Systems in Early Type Galaxies: Estimation Procedure and Catalog of Properties for Globular Cluster Systems Observed with Deep Imaging Surveys
The Spatial Distribution of Globular Cluster Systems in Early Type Galaxies: Estimation Procedure and Catalog of Properties for Globular Cluster Systems Observed with Deep Imaging Surveys Open
We present an analysis of the spatial distribution of globular cluster (GC) systems of 118 nearby early-type galaxies in the Next Generation Virgo Cluster Survey (NGVS) and Mass Assembly of early-Type GaLAxies with their fine Structures (M…
View article: Dwarf galaxies in the MATLAS survey: The satellite system of NGC 474 under scrutiny with MUSE
Dwarf galaxies in the MATLAS survey: The satellite system of NGC 474 under scrutiny with MUSE Open
A recent study of the distribution of dwarf galaxies in the MATLAS sample in galaxy groups revealed an excess of flattened satellite structures, reminiscent of the co-rotating planes of dwarf galaxies discovered in the local Universe. If c…
View article: Dwarf Galaxies in the MATLAS Survey: The satellite system of NGC474 under scrutiny with MUSE
Dwarf Galaxies in the MATLAS Survey: The satellite system of NGC474 under scrutiny with MUSE Open
A recent study of the distribution of dwarf galaxies in the MATLAS sample in galaxy groups revealed an excess of flattened satellite structures, reminiscent of the co-rotating planes of dwarf galaxies discovered in the local Universe. If c…
View article: Dynamical resonances in PHANGS galaxies
Dynamical resonances in PHANGS galaxies Open
Bars are remarkable stellar structures that can transport gas toward centers and drive the secular evolution of galaxies. In this context, it is important to locate dynamical resonances associated with bars. For this study, we used ${Spitz…
View article: Dynamical resonances in PHANGS galaxies
Dynamical resonances in PHANGS galaxies Open
Bars are remarkable stellar structures that can transport gas toward centers and drive the secular evolution of galaxies. In this context, it is important to locate dynamical resonances associated with bars. For this study, we used Spitzer…
View article: Polycyclic Aromatic Hydrocarbon and CO(2-1) Emission at 50-150 pc Scales in 70 Nearby Galaxies
Polycyclic Aromatic Hydrocarbon and CO(2-1) Emission at 50-150 pc Scales in 70 Nearby Galaxies Open
Combining Atacama Large Millimeter/sub-millimeter Array CO(2-1) mapping and JWST near- and mid-infrared imaging, we characterize the relationship between CO(2-1) and polycyclic aromatic hydrocarbon (PAH) emission at ~100 pc resolution in 7…
View article: PHANGS-JWST: Data-processing Pipeline and First Full Public Data Release
PHANGS-JWST: Data-processing Pipeline and First Full Public Data Release Open
The exquisite angular resolution and sensitivity of JWST are opening a new window for our understanding of the Universe. In nearby galaxies, JWST observations are revolutionizing our understanding of the first phases of star formation and …
View article: PHANGS-HST Catalogs for ∼100,000 Star Clusters and Compact Associations in 38 Galaxies. I. Observed Properties
PHANGS-HST Catalogs for ∼100,000 Star Clusters and Compact Associations in 38 Galaxies. I. Observed Properties Open
We present the largest catalog to date of star clusters and compact associations in nearby galaxies. We have performed a V -band-selected census of clusters across the 38 spiral galaxies of the PHANGS–Hubble Space Telescope (HST) Treasury …
View article: Hα Emission and H ii Regions at the Locations of Recent Supernovae in Nearby Galaxies
Hα Emission and H ii Regions at the Locations of Recent Supernovae in Nearby Galaxies Open
We present a statistical analysis of the local, ≈50–100 pc scale, H α emission at the locations of recent (≤125 yr) supernovae (SNe) in nearby star-forming galaxies. Our sample consists of 32 SNe in 10 galaxies that are targets of the PHAN…
View article: PHANGS-ML: Dissecting Multiphase Gas and Dust in Nearby Galaxies Using Machine Learning
PHANGS-ML: Dissecting Multiphase Gas and Dust in Nearby Galaxies Using Machine Learning Open
The PHANGS survey uses Atacama Large Millimeter/submillimeter Array, Hubble Space Telescope, Very Large Telescope, and JWST to obtain an unprecedented high-resolution view of nearby galaxies, covering millions of spatially independent regi…
View article: Do spiral arms enhance star formation efficiency?
Do spiral arms enhance star formation efficiency? Open
Spiral arms, as those of our own Milky Way, are some of the most spectacular features in disc galaxies. It has been argued that star formation should proceed more efficiently in spiral arms as a result of gas compression. Yet, observationa…