A. Zavagno
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View article: ALMA-QUARKS: Few-Thousand-Year Hatching out of "Egg": The Supersonic Breakout of a Hypercompact H II Region from Its Parental Hot Core
ALMA-QUARKS: Few-Thousand-Year Hatching out of "Egg": The Supersonic Breakout of a Hypercompact H II Region from Its Parental Hot Core Open
The kinematic evolution of hypercompact H II (HC H II) regions around young high-mass stars remains poorly understood due to complex interactions with parental environs. We present ALMA QUARKS/ATOMS 1.3 mm/3 mm observations (the highest re…
View article: The ALMA-QUARKS Survey. III. Clump-to-core Fragmentation and Searches for High-mass Starless Cores
The ALMA-QUARKS Survey. III. Clump-to-core Fragmentation and Searches for High-mass Starless Cores Open
The Querying Underlying mechanisms of massive star formation with ALMA-Resolved gas Kinematics and Structures (QUARKS) survey observed 139 infrared-bright (IR-bright) massive protoclusters at 1.3 mm wavelength with the Atacama Large Millim…
View article: Characterizing the interplay between Galactic star formation and ionization feedback with PRIMA
Characterizing the interplay between Galactic star formation and ionization feedback with PRIMA Open
Recent results from the James Webb Space Telescope show that nearby spiral galaxies are dominated by the presence of H I and H II bubbles that strongly shape their surrounding medium. These bubbles result from the feedback of high-mass sta…
View article: Star formation efficiency and scaling relations in parsec-scale cluster-forming clumps
Star formation efficiency and scaling relations in parsec-scale cluster-forming clumps Open
Numerical simulations predict that clumps ($\sim$1 pc) should form stars at high efficiency to produce bound star clusters. We conducted a statistical study of 17 nearby cluster-forming clumps to examine the star formation rate and gas mas…
View article: Star formation efficiency and scaling relations in parsec-scale cluster-forming clumps
Star formation efficiency and scaling relations in parsec-scale cluster-forming clumps Open
Numerical simulations predict that clumps ($\sim$1 pc) should form stars at high efficiency to produce bound star clusters. We conducted a statistical study of 17 nearby cluster-forming clumps to examine the star formation rate and gas mas…
View article: Structure and Fragmentation Scale of a Massive Star-forming Filament in NGC 6334: High-resolution Mid-infrared Absorption Imaging with JWST
Structure and Fragmentation Scale of a Massive Star-forming Filament in NGC 6334: High-resolution Mid-infrared Absorption Imaging with JWST Open
Dense filaments are believed to be representative of the initial conditions of star formation in molecular clouds. We have used the MIRI instrument on JWST to image the massive filament NGC 6334M at d ∼ 1.3 kpc with unprecedented resolutio…
View article: The role of magnetic field and stellar feedback in the evolution of filamentary structures in collapsing star-forming clouds
The role of magnetic field and stellar feedback in the evolution of filamentary structures in collapsing star-forming clouds Open
Context: Filaments are common features in molecular clouds and they play a key role in star formation (SF). Studying their life cycle is essential to fully understand the SF process. Aims: We aim to characterise the impact of magnetic fiel…
View article: The role of magnetic field and stellar feedback in the evolution of filamentary structures in collapsing star-forming clouds
The role of magnetic field and stellar feedback in the evolution of filamentary structures in collapsing star-forming clouds Open
Context . Filaments are common features in molecular clouds and they play a key role in star formation. Studying their life cycle is essential to fully understand the star formation process. Aims . Using high-resolution magnetohydrodynamic…
View article: Candidate bow shock stars: Spectral analysis and environment
Candidate bow shock stars: Spectral analysis and environment Open
Aims . Infrared bow shocks are arc-shaped structures located ahead of a star and generally observed at mid- to far-IR wavelengths. They are thought to result from the interaction of the stellar wind with the ambient interstellar medium and…
View article: A Virgo Environmental Survey Tracing Ionised Gas Emission (VESTIGE)
A Virgo Environmental Survey Tracing Ionised Gas Emission (VESTIGE) Open
The Virgo Environmental Survey Tracing Ionised Gas Emission (VESTIGE) survey is a blind narrow-band H α + [N II ] imaging survey of the Virgo cluster carried out with MegaCam of the Canada-France-Hawaii Telescope. The survey provides deep …
View article: ATOMS: ALMA three-millimeter observations of massive star-forming regions – XVIII. On the origin and evolution of dense gas fragments in molecular shells of compact H <scp>ii</scp> regions
ATOMS: ALMA three-millimeter observations of massive star-forming regions – XVIII. On the origin and evolution of dense gas fragments in molecular shells of compact H <span>ii</span> regions Open
Fragmentation and evolution for the molecular shells of the compact H ii regions are less explored compared to their evolved counterparts. We map nine compact H ii regions with a typical diameter of 0.4 pc that are surrounded by molecular …
View article: ATOMS: ALMA three-millimeter observations of massive star-forming regions -- XVIII. On the origin and evolution of dense gas fragments in molecular shells of compact HII regions
ATOMS: ALMA three-millimeter observations of massive star-forming regions -- XVIII. On the origin and evolution of dense gas fragments in molecular shells of compact HII regions Open
Fragmentation and evolution for the molecular shells of the compact HII regions are less explored compared to their evolved counterparts. We map nine compact HII regions with a typical diameter of 0.4 pc that are surrounded by molecular sh…
View article: Compact and high excitation molecular clumps in the extended ultraviolet disk of M83
Compact and high excitation molecular clumps in the extended ultraviolet disk of M83 Open
Context. The extended ultraviolet (XUV) disks of nearby galaxies show ongoing massive-star formation, but their parental molecular clouds remain mostly undetected despite searches in CO(1–0) and CO(2–1). The recent detection of 23 clouds i…
View article: Compact and High Excitation Molecular Clumps in the Extended Ultraviolet Disk of M83
Compact and High Excitation Molecular Clumps in the Extended Ultraviolet Disk of M83 Open
The extended ultraviolet (XUV) disks of nearby galaxies show ongoing massive star formation, but their parental molecular clouds remain mostly undetected despite searches in CO(1-0) and CO(2-1). The recent detection of 23 clouds in the hig…
View article: Supervised machine learning on Galactic filaments
Supervised machine learning on Galactic filaments Open
Context. Filaments host star formation and are fundamental structures of galaxies. Their diversity, as observed in the interstellar medium, from very low-density structures to very dense hubs, and their complex life cycles make their compl…
View article: Understanding the star formation efficiency in dense gas: Initial results from the CAFFEINE survey with ArTéMiS
Understanding the star formation efficiency in dense gas: Initial results from the CAFFEINE survey with ArTéMiS Open
Context. Despite recent progress, the question of what regulates the star formation efficiency (SFE) in galaxies remains one of the most debated problems in astrophysics. According to the dominant picture, star formation (SF) is regulated …
View article: From Bubbles and Filaments to Cores and Disks: Gas Gathering and Growth of Structure Leading to the Formation of Stellar Systems
From Bubbles and Filaments to Cores and Disks: Gas Gathering and Growth of Structure Leading to the Formation of Stellar Systems Open
The study of the development of structures on multiple scales in the cold\ninterstellar medium has experienced rapid expansion in the past decade, on both\nthe observational and the theoretical front. Spectral line studies at\n(sub-)millim…
View article: Understanding the relative importance of magnetic field, gravity, and turbulence in star formation at the hub of the giant molecular cloud G148.24+00.41
Understanding the relative importance of magnetic field, gravity, and turbulence in star formation at the hub of the giant molecular cloud G148.24+00.41 Open
The relative importance of magnetic fields, turbulence, and gravity in the early phases of star formation is still not well understood. We report the first high-resolution dust polarization observations at 850 $μ$m around the most massive …
View article: The Giant Molecular Cloud G148.24+00.41: gas properties, kinematics, and cluster formation at the nexus of filamentary flows
The Giant Molecular Cloud G148.24+00.41: gas properties, kinematics, and cluster formation at the nexus of filamentary flows Open
Filamentary flows towards the centre of molecular clouds have been recognized as a crucial process in the formation and evolution of stellar clusters. In this paper, we present a comprehensive observational study that investigates the gas …
View article: Understanding the relative importance of magnetic field, gravity, and turbulence in star formation at the hub of the giant molecular cloud G148.24+00.41
Understanding the relative importance of magnetic field, gravity, and turbulence in star formation at the hub of the giant molecular cloud G148.24+00.41 Open
The relative importance of magnetic fields, turbulence, and gravity in the early phases of star formation is still not well understood. We report the first high-resolution dust polarization observations at 850 $\mu$m around the most massiv…
View article: The Giant Molecular Cloud G148.24+00.41: Gas Properties, Kinematics, and Cluster Formation at the Nexus of Filamentary Flows
The Giant Molecular Cloud G148.24+00.41: Gas Properties, Kinematics, and Cluster Formation at the Nexus of Filamentary Flows Open
Filamentary flows toward the centre of molecular clouds have been recognized as a crucial process in the formation and evolution of stellar clusters. In this paper, we present a comprehensive observational study that investigates the gas p…
View article: Stellar feedback in the star formation–gas density relation: Comparison between simulations and observations
Stellar feedback in the star formation–gas density relation: Comparison between simulations and observations Open
Context . The impact of stellar feedback on the Kennicutt–Schmidt (KS) law, which relates the star formation rate (SFR) to the surface gas density, is a topic of ongoing debate. The interpretation of high-resolution observations of individ…
View article: Stellar Feedback in the Star Formation-Gas Density Relation: Comparison between Simulations and Observations
Stellar Feedback in the Star Formation-Gas Density Relation: Comparison between Simulations and Observations Open
Context. The impact of stellar feedback on the Kennicutt-Schmidt law (KS law), which relates star formation rate (SFR) to surface gas density, is a topic of ongoing debate. The interpretation of individual cloud observations is challenging…
View article: A deep H<i>α</i> survey of the Carina tangent arm direction
A deep H<i>α</i> survey of the Carina tangent arm direction Open
Aims. The arm tangent direction provides a unique viewing geometry, with a long path in relatively narrow velocity ranges and lines of view that cross the arm perpendicular to its thickness. The spiral arm tangent regions are therefore the…
View article: The SOFIA FEEDBACK [CII] Legacy Survey: Rapid molecular cloud dispersal in RCW 79
The SOFIA FEEDBACK [CII] Legacy Survey: Rapid molecular cloud dispersal in RCW 79 Open
It has long been discussed whether stellar feedback in the form of winds and/or radiation can shred the nascent molecular cloud, thereby controlling the star formation rate. However, directly probing and quantifying the impact of stellar f…
View article: The SOFIA FEEDBACK Legacy Survey: Rapid molecular cloud dispersal in RCW 79
The SOFIA FEEDBACK Legacy Survey: Rapid molecular cloud dispersal in RCW 79 Open
It has long been discussed whether stellar feedback in the form of winds and/or radiation can shred the nascent molecular cloud, thereby controlling the star formation rate. However, directly probing and quantifying the impact of stellar f…
View article: Probing the global dust properties and cluster formation potential of the giant molecular cloud G148.24+00.41
Probing the global dust properties and cluster formation potential of the giant molecular cloud G148.24+00.41 Open
Clouds more massive than about 105 M⊙ are potential sites of massive cluster formation. Studying the properties of such clouds in the early stages of their evolution offers an opportunity to test various cluster formation processes. We mak…
View article: ATOMS: ALMA three-millimeter observations of massive star-forming regions – XIII. Ongoing triggered star formation within clump-fed scenario found in the massive (∼1500 M⨀) clump
ATOMS: ALMA three-millimeter observations of massive star-forming regions – XIII. Ongoing triggered star formation within clump-fed scenario found in the massive (∼1500 M⨀) clump Open
Whether ionization feedback triggers the formation of massive stars is highly debated. Using ALMA 3-mm observations with a spatial resolution of ∼0.05 pc and a mass sensitivity of 1.1 $\rm M_\odot$ per beam at 20 K, we investigate the star…
View article: Supervised machine learning on Galactic filaments Revealing the filamentary structure of the Galactic interstellar medium
Supervised machine learning on Galactic filaments Revealing the filamentary structure of the Galactic interstellar medium Open
Context. Filaments are ubiquitous in the Galaxy, and they host star formation. Detecting them in a reliable way is therefore key towards our understanding of the star formation process. Aims. We explore whether supervised machine learning …
View article: The Star Formation Rate of the Milky Way as Seen by Herschel
The Star Formation Rate of the Milky Way as Seen by Herschel Open
We present a new derivation of the Milky Way’s current star formation rate (SFR) based on the data of the Herschel InfraRed Galactic Plane Survey (Hi-GAL). We estimate the distribution of the SFR across the Galactic plane from the star-for…