92 citations · 527 across the 20 of their papers we have counts for
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HyGAL: Characterizing the Galactic ISM with observations of hydrides and other small molecules. III. The absorption lines of [O I], CH, and OH
W. -J. Kim, A. M. Jacob, D. A. Neufeld +17
The HyGAL Stratospheric Observatory for Infrared Astronomy (SOFIA) legacy program aims at characterizing the interstellar medium in the Milky Way using hydrides, [C II], and [O I]…
The dominance of turbulence over magnetism in the formation of massive star cluster seeds
Junhao Liu, Patricio Sanhueza, Piyali Saha +32
High-mass stars form in protoclusters, where gravo-magnetic processes shape collapsing clouds and clumps to be elongated preferentially perpendicular to magnetic (B) fields. Yet it…
Physical conditions for dust grain alignment in Class 0 protostellar cores II. The role of the radiation field in models aligning/disrupting dust grains
Valentin J. M. Le Gouellec, Anaëlle J. Maury, Charles L. H. Hull +3
The polarized dust emission observed in Class 0 protostellar cores at high angular resolution with ALMA has raised several concerns about the grain alignment conditions in these re…
3D chemical structure of the diffuse turbulent ISM II -- Origin of CH, new solution to an 80 years mystery
Benjamin Godard, Guillaume Pineau Des Forêts, Patrick Hennebelle +2
Aims: The large abundances of CH in the diffuse interstellar medium (ISM) are a long standing issue of our understanding of the thermodynamical and chemical states of the gas.…
Is the mm/submm dust polarization a robust tracer of the magnetic field topology in protostellar envelopes? A model exploration
Valeska Valdivia, Anaëlle Maury, Patrick Hennebelle
High resolution (sub-)millimeter polarization observations have opened a new era in the understanding of how B-fields are organized in star forming regions, unveiling an intricate…
HyGAL: Characterizing the Galactic ISM with observations of hydrides and other small molecules -- I. Survey description and a first look toward W3(OH), W3 IRS5 and NGC 7538 IRS1
A. M. Jacob, D. A. Neufeld, P. Schilke +22
The HyGAL SOFIA legacy program surveys six hydride molecules -- ArH+, OH+, H2O+, SH, OH, and CH -- and two atomic constituents -- C+ and O -- within the diffuse interstellar medium…
Calibrating the Davis-Chandrasekhar-Fermi method with numerical simulations: uncertainties in estimating the magnetic field strength from statistics of field orientations
Junhao Liu, Qizhou Zhang, Benoit Commercon +3
The Davis-Chandrasekhar-Fermi (DCF) method is widely used to indirectly estimate the magnetic field strength from the plane-of-sky field orientation. In this work, we present a set…
3D chemical structure of diffuse turbulent ISM. I. Statistics of the HI-to-H transition
Elena Bellomi, Benjamin Godard, Patrick Hennebelle +4
We studied the statistical properties of the HI-to-H transition observed in absorption in the local diffuse and multiphase ISM to identify the physical processes controlling th…
An observational correlation between magnetic field, angular momentum and fragmentation in the envelopes of Class 0 protostars?
Maud Galametz, Anaelle Maury, Josep M. Girart +8
To assess the potential role of magnetic fields in regulating the envelope rotation and the fragmentation of Class 0 protostars, we carried out observations of the dust polarized e…
A statistical analysis of dust polarization properties in ALMA observations of Class 0 protostellar cores
V. J. M. Le Gouellec, A. J. Maury, V. Guillet +8
Recent observational progress has challenged the dust grain-alignment theories used to explain the polarized dust emission routinely observed in star-forming cores. In an effort to…
Low dust emissivities and radial variations in the envelopes of Class 0 protostars: a signature of early grain growth?
Maud Galametz, Anaelle J. Maury, Valeska Valdivia +3
Analyzing the properties of dust and its evolution in the early phases of star formation is crucial to put constraints on the collapse and accretion processes as well as on the pri…
ESA Voyage 2050 white paper: A complete census of the gas phases in and around galaxies, far-UV spectropolarimetry as a prime tool for understanding galaxy evolution and star formation
V. Lebouteiller, C. Gry. H. Yan, P. Richter +18
(abridged) The far-UV wavelength range (912-2000A) provides access to atomic and molecular transitions of many species the interstellar medium (ISM), circumgalactic medium (CGM), a…
Indirect evidence of significant grain growth in young protostellar envelopes from polarized dust emission
Valeska Valdivia, Anaelle Maury, Robert Brauer +4
How and when in the star formation sequence do dust grains start to grow into pebbles is a cornerstone question to both star and planet formation. We compute the polarized radiativ…
SMA observations of the polarized dust emission in solar-type Class 0 protostars: the magnetic field properties at envelope scales
Maud Galametz, Anaelle Maury, Josep M. Girart +6
Although, from a theoretical point of view, magnetic fields are believed to have a significant role during the early stages of star formation, especially during the main accretion…
H formation on interstellar dust grains: the viewpoints of theory, experiments, models and observations
Valentine Wakelam, Emeric Bron, Stephanie Cazaux +12
Molecular hydrogen is the most abundant molecule in the universe. It is the first one to form and survive photo-dissociation in tenuous environments. Its formation involves catalyt…
Chemical Evolution of Turbulent Multiphase Molecular Clouds
Valeska Valdivia, Patrick Hennebelle, Benjamin Godard +3
Molecular clouds are essentially made up of atomic and molecular hydrogen, which in spite of being the simplest molecule in the ISM plays a key role in the chemical evolution of mo…
Origin of CH+ in diffuse molecular clouds warm H2 and ion-neutral drift
Valeska Valdivia, Benjamin Godard, Patrick Hennebelle +3
This paper assesses the roles of the presence of warm H2, and the increased formation rate due to the ion-neutral drift. We performed ideal MHD simulations that include the heating…
H2 distribution during formation of multiphase molecular clouds
Valeska Valdivia, Patrick Hennebelle, Maryvonne Gérin +1
H2 is the simplest and the most abundant molecule in the ISM, and its formation precedes the formation of other molecules. Understanding the dynamical influence of the environment…