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- W4300907112 abstract "Recent herschel and planck observations of submillimeter dust emission revealed the omnipresence of filamentary structures in the interstellar medium (ISM). The ubiquity of filaments in quiescent clouds as well as in star-forming regions indicates that the formation of filamentary structures is a natural product of the physics at play in the magnatized turbulent cold ISM. An analysis of more than 270 filaments observed with {it Herschel} in 8 regions of the Gould Belt, shows that interstellar filaments are characterized by a narrow distribution of central width, while they span a wide column density range. Molecular line observations of a sample of these filaments show evidence of an increase in the velocity dispersion of dense filaments with column density, suggesting an evolution in mass per unit length due to accretion of surrounding material onto these star-forming filaments. The analyses of planck dust polarization observations show that the mean magnetic field along the filaments is different from that of their surrounding clouds. This points to a coupling between the matter and the $vec{B}$-field in the filament formation process. These observational results, derived from dust and gas tracers in total and polarized intensity, set strong constraints on theoretical models for filament formation and evolution. They also provide important hints on the initial conditions of the star formation process from the fragmentation of dense (supercritical) filaments. Higher resolution dust polarization observations and large scale molecular line mapping are nevertheless required to investigate in more details the internal structure of interstellar filaments." @default.
- W4300907112 created "2022-10-04" @default.
- W4300907112 creator A5055096042 @default.
- W4300907112 date "2017-12-02" @default.
- W4300907112 modified "2023-10-18" @default.
- W4300907112 title "Properties of interstellar filaments as derived from $Herschel$, $Planck$, and molecular line observations" @default.
- W4300907112 doi "https://doi.org/10.48550/arxiv.1712.00604" @default.
- W4300907112 hasPublicationYear "2017" @default.
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