A. Socci

Emergence of high-mass stars in complex fiber networks (EMERGE)

F. Bonanomi, Alvaro Hacar, A. Socci, Stefan Heigl

Context. A turbulent cascade naturally generates a hierarchy of structures within molecular clouds. Filament networks arise from this turbulent cascade, with fibers suggested to be the first (tran)sonic components formed out of it. Consequently, the properties of cores forming within fibers may …

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Low cosmic-ray ionisation at parsec scales in G035.39-00.33

A. Socci, Ashley Barnes, Jaime Pineda, O. Sipilä et autres

Cosmic rays (CRs) regulate the chemical evolution of the gas and its coupling to the magnetic field in the densest and coldest regions of the interstellar medium (ISM). However, the CR ionisation rate of H$_2$ ($ζ_2$) is one of the most debated …

Low cosmic-ray ionisation at parsec scales in G035.39-00.33

A. Socci, Ashley Barnes, Jaime Pineda, O. Sipilä et autres

Cosmic rays (CRs) regulate the chemical evolution of the gas and its coupling to the magnetic field in the densest and coldest regions of the interstellar medium (ISM). However, the CR ionisation rate of H$_2$ ($ζ_2$) is one of the most debated …

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Chemical Complexity in the Early Stages of Star Formation in the SKAO Era

Eleonora Bianchi, Mathilde Bouvier, C. Codella, Laura Colzi et autres

About 350 molecules have been identified in the interstellar medium (ISM), including complex molecules relevant to prebiotic chemistry. A remarkable level of molecular diversity has been observed from the earliest stages of star formation, providing the initial chemical inventory inherited by planetary …

Chemical Complexity in the Early Stages of Star Formation in the SKAO Era

E. Bianchi, Mathilde Bouvier, C. Codella, Laura Colzi et autres

About 350 molecules have been identified in the interstellar medium (ISM), including complex molecules relevant to prebiotic chemistry. A remarkable level of molecular diversity has been observed from the earliest stages of star formation, providing the initial chemical inventory inherited by planetary …

Kinematics of young stellar objects in NGC 2024 based on infrared proper motions

Alena Rottensteiner, M. G. Petr-Gotzens, Stefan Meingast, João Alves et autres

The most recently formed young stellar objects (YSOs) in active star-forming regions are excellent tracers of their parent cloud motion. Their positions and dynamics provide insights into cluster formation and constrain kinematic decoupling timescales between stars and gas. However, because of their …

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Kinematics of young stellar objects in NGC 2024 based on infrared proper motions

Alena Rottensteiner, M. G. Petr-Gotzens, Stefan Meingast, J. Alves et autres

The most recently formed young stellar objects (YSOs) in active star-forming regions are excellent tracers of their parent cloud motion. Their positions and dynamics provide insights into cluster formation and constrain kinematic decoupling timescales between stars and gas. However, because of their …

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Kinematics of young stellar objects in NGC 2024 based on infrared proper motions

Alena Rottensteiner, M. G. Petr-Gotzens, Stefan Meingast, João Victor Costa Alves et autres

The most recently formed young stellar objects (YSOs) in active star-forming regions are excellent tracers of their parent cloud motion. Their positions and dynamics provide insights into cluster formation and constrain kinematic decoupling timescales between stars and gas. However, because of their …

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Emergence of high-mass stars in complex fiber networks (EMERGE)

A. Hacar, Ralf Konietzka, Daniel Seifried, Susan E. Clark et autres

Context. Identified as parsec-size, gas clumps at the junction of multiple filaments, hub-filament systems (HFS) play a crucial role during the formation of young clusters and high-mass stars. These HFS still appear to be detached from most galactic filaments when compared in …

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The real structure of the heavens

A. Socci

Im Jahr 1907 bemerkte Barnard auffällige dunkle Streifen in der Nähe heller Nebel im Sternbild Stier. Obwohl die Natur dieser dunklen Strukturen damals noch unklar war, äußerte er die Vermutung, dass der Zusammenhang zwischen Nebulositäten und Leerräumen eines Tages grundlegend für das …

Emergence of high-mass stars in complex fiber networks (EMERGE) V. From filaments to spheroids: the origin of the hub-filament systems

A. Hacar, Ralf Konietzka, Daniel Seifried, S. E. Clark et autres

Identified as parsec-size, gas clumps at the junction of multiple filaments, hub-filament systems (HFS) play a crucial role during the formation of young clusters and high-mass stars. These HFS appear nevertheless to be detached from most galactic filaments when compared in the …

Emergence of high-mass stars in complex fiber networks (EMERGE)

A. Socci, A. Hacar, F. Bonanomi, M. Tafalla et autres

Context. Over the past decade,Herschelfar-infrared (FIR) observations have demonstrated the complex organisation characterising the interstellar medium as networks of parsec-scale filaments. At the same time, fiber networks have been found to aptly describe the gas structures in star-forming regions at sub-parsec scales. …

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