Results 11 to 20 of about 1,711 (227)

Revisiting CN<sup>-</sup> Formation Mechanisms in Electron Collisions with Benzonitrile. [PDF]

open access: yesChemphyschem
This study explores negative ion formation via electron attachment, revealing CN− formation at 3.0 and 7–10 eV. Dissociation pathways are analyzed using G4(MP2) and CASPT2 calculations, highlighting the coupling between the π4* and σ* resonances critical for interstellar chemistry. Radiation‐induced processes in the aromatic cyano compound benzonitrile
Rodrigues R   +8 more
europepmc   +2 more sources

The Influence of Outflow Feedback in Clumps

open access: yesThe Astrophysical Journal, 2023
We analyzed the influence of outflow feedback from two perspectives: turbulent support and potential disruptive effect, of which 694 clumps and 188 have been identified as outflow candidates.
Qiang Li   +5 more
doaj   +1 more source

Clump-scale Gas Infall in High-mass Star Formation: A Multitransition View with James Clerk Maxwell Telescope HCN (4–3) Mapping

open access: yesThe Astrophysical Journal Supplement Series, 2023
Gas infall motions play a crucial role in high-mass star formation and are characterized by observable signatures of blueshifted asymmetric spectral line profiles (“blue profiles”).
Fengwei Xu   +5 more
doaj   +1 more source

High-mass Starless Clumps: Dynamical State and Correlation between Physical Parameters

open access: yesThe Astrophysical Journal, 2023
In order to study the initial conditions of massive star formation, we have previously built a sample of 463 high-mass starless clumps (HMSCs) across the inner Galactic plane covered by multiple continuum surveys.
Bo Huang   +5 more
doaj   +1 more source

SOFIA and ALMA Investigate Magnetic Fields and Gas Structures in Massive Star Formation: The Case of the Masquerading Monster in BYF 73

open access: yesThe Astrophysical Journal, 2023
We present Stratospheric Observatory For Infrared Astronomy (SOFIA) + Atacama Large Millimeter/submillimeter Array (ALMA) continuum and spectral-line polarization data on the massive molecular cloud BYF 73, revealing important details about the magnetic ...
Peter J. Barnes   +6 more
doaj   +1 more source

Continuous solutions of cosmic-rays and waves in astrophysical environments

open access: yesScientific Reports, 2023
The propagation of energetic charged particles and cosmic rays in magnetized thermal plasma is focused. We consider a four-fluid system that consists of thermal plasma, cosmic rays, and two opposite propagating Alfvén waves to investigate the dynamics ...
K. Irshad   +5 more
doaj   +1 more source

SOFIA Observations of 30 Doradus. II. Magnetic Fields and Large-scale Gas Kinematics

open access: yesThe Astrophysical Journal, 2023
The heart of the Large Magellanic Cloud, 30 Doradus, is a complex region with a clear core-halo structure. Feedback from the stellar cluster R136 has been shown to be the main source of energy creating multiple parsec-scale expanding-shells in the outer ...
Le Ngoc Tram   +15 more
doaj   +1 more source

The dynamics of interstellar cloud complexes [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 1988
Description d'une simulation numerique de l'evolution d'un nuage moleculaire geant de 1,5×10 5 M ○. consistant initialement en 48 nuages de masses egales se deplacant avec des vitesses supersoniques aleatoires. Les resultats montrent que, si l'energie dans le mouvement chaotique est inferieure a la valeur du viriel, une grande fraction de la matiere ...
J. J. Monaghan, S. R. Varnas
openaire   +1 more source

Time-resolved relaxation and fragmentation of polycyclic aromatic hydrocarbons investigated in the ultrafast XUV-IR regime

open access: yesNature Communications, 2021
Polycyclic aromatic hydrocarbons play an important role in interstellar chemistry, where interaction with high energy photons can induce ionization and fragmentation reactions.
J. W. L. Lee   +42 more
doaj   +1 more source

Filiation et novum temporel : le cas d’Interstellar et d’Arrival

open access: yesReS Futurae, 2021
Interstellar (Christopher Nolan, 2014) and Arrival (Denis Villeneuve, 2016) each offer a remarkable example of the tension between the affective charge proper to character development – affection, dilemma, sacrifice – and the cognitive distancing proper ...
Simon Bréan
doaj   +1 more source

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