Results 151 to 160 of about 336 (167)
On the universality of interstellar filaments: theory meets simulations and observations [PDF]
Monthly Notices of the Royal Astronomical Society, 2016 Filaments are ubiquitous in the universe. Recent observations have revealed that stars and star clusters form preferentially along dense filaments. Understanding the formation and properties of filaments is therefore a crucial step in understanding star formation.
Christoph Federrath
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Pulsar Scintillation Arcs reveal filaments in the Interstellar Plasma
AIP Conference Proceedings, 2011Both forward and reverse Scintillation Arcs are seen in observations of several pulsars. We study the arcs, which are seen in the 2‐D Fourier transform of the dynamic spectrum, from PSRs B0834+06 and B1737+13. In both cases we conclude that the underlying scattered image is highly extended along an axis and also highly modulated along that axis.
Marta Burgay +2 more
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Merging, fragmentation and collapse of interstellar filaments
2023Stars have always fascinated people and already decades ago observations showed that low-mass stars originate from filamentary structures. Nevertheless, the formation process of these filaments, as well as their evolution and fragmentation into individual cores, is not yet sufficiently understood.
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Fragmentation in interstellar filaments
2019Interstellare Filamente sind ein wesentlicher Schritt der Sternentstehung. In den letzten Jahren haben Beobachtungen die analytischen und numerischen Studien aus mehreren Jahrzehnten bewiesen, die gezeigt haben, dass Molekülwolken im interstellaren Medium hochgradig filamentär und Entstehungsorte massearmer Sterne sind.
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Survey of Molecular Emission Lines in the WB 673 Interstellar Filament
Astronomy Reports, 2020We report observations of molecular line emission toward dense clumps of the WB 673 interstellar filament: WB 668, WB 673, S233–IR, and G173.57+2.43. The observations were done with the 20-m telescope at the Onsala Space Observatory (Sweden). Maps of emission, column densities, and relative abundances of CO, N2H
O. L. Ryabukhina, M. S. Kirsanova
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Possible link between the power spectrum of interstellar filaments and the origin of the prestellar core mass function [PDF]
Astronomy and Astrophysics, 2015 Two major features of the prestellar CMF are: 1) a broad peak below 1 Msun, presumably corresponding to a mean gravitational fragmentation scale, and 2) a characteristic power-law slope, very similar to the Salpeter slope of the stellar initial mass function (IMF) at the high-mass end.
Stefania Pezzuto +2 more
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The role of interstellar filaments in shaping the IMF and regulating star formation
EAS Publications Series, 2015We summarize the star formation scenario favored by Herschel studies of the nearest molecular clouds of the Galaxy which point to the key role of the quasi-universal filamentary structure pervading the cold ISM. This scenario provides new insight into the origin of the initial mass function and the regulation of star formation in dense gas.
P. André, V. Könyves, A. Roy
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Interstellar Filaments and Their Role in Star Formation as Revealed by Herschel
2014Recent studies of the nearest star-forming clouds of the Galaxy at submillimeter wavelengths with the Herschel Space Observatory have provided us with unprecedented images of the initial conditions and early phases of the star formation process. The Herschel images reveal an intricate network of filamentary structure in every interstellar cloud.
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Interstellar Neutral Hydrogen Filaments at High Galactic Latitudes and the Bennett Pinch
Astrophysics and Space Science, 1995Observed properties of interstellar neutral hydrogen filaments suggest the presence of the Bennett pinch as described by the Carlqvist relationship with rotation around the filament axes included. A brief summary is first given of three ways in which a filament model for interstellar “cloud” structure was tested. Preliminary results from highresolution
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