Results 11 to 20 of about 342 (165)

Interstellar Filament Detection and Characterization: Methods and Implications for Studies of the Magnetized Interstellar Medium

Galaxies
Filamentary structures are ubiquitous in the interstellar medium and play a key role in the evolution of molecular clouds and star formation. Their morphology and relative orientation with respect to magnetic fields have been widely used as a diagnostic ...
Dana Alina
doaj   +3 more sources

Associations between Scattering Screens and Interstellar Medium Filaments

The Astrophysical Journal
Pulsar scintillation can be used to measure small-scale structure in the Galaxy, but little is known about the specific interstellar medium (ISM) features that cause scintillation.
Ashley M. Stock, Marten H. van Kerkwijk
doaj   +3 more sources

Deep Learning for Position Angle Quantification Applied to Interstellar Filaments

The Astronomical Journal
Studying filamentary structures opened a door for understanding the conditions of star formation and interstellar medium properties. Present-day algorithms for identifying filaments and their orientations require careful individual parameterization for ...
Temirkul Umetaliev, Dana Alina, Anel Salmenova   +2 more
doaj   +2 more sources

Sutra: An Integrated Framework for Identification and Characterization of Filaments in the Interstellar Medium

The Astronomical Journal
Observations of the interstellar medium (ISM) at far-infrared and submillimeter wavelengths reveal a complex filamentary structure of dust and gas, which plays a pivotal role in both low- and high-mass star formation.
Shivam Kumaran, Ushasi Bhowmick, Vipin Kumar, Manish Chauhan, Munn Vinayak Shukla, Mehul R. Pandya   +5 more
doaj   +3 more sources

EVIDENCE FOR AN INTERSTELLAR DUST FILAMENT IN THE OUTER HELIOSHEATH [PDF]

The Astrophysical Journal, 2015
Submitted to Astrophysical Journal January 19 ...
P. C. Frisch, B-G Andersson, A. Berdyugin, V. Piirola, H. O. Funsten, A. M. Magalhaes, D. B. Seriacopi, D. J. McComas, N. A. Schwadron, J. D. Slavin, S. J. Wiktorowicz   +10 more
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Interstellar Filaments and the Statistics of Galactic Hi [PDF]

The Astrophysical Journal, 1997
This paper presents a statistical explanation of filament formation in the galactic atomic hydrogen. Recently developed technique allows to determine the 3D spectrum of random HI density. We claim that even in the absence of dynamical factors the Gaussian field corresponding to the measured values of the spectrum of HI density should exhibit ...
Lazarian, Alex, Pogosyan, Dmitri
openaire   +2 more sources

Characterizing interstellar filaments withHerschelin IC 5146 [PDF]

Astronomy & Astrophysics, 2011
We provide a first look at the results of the Herschel Gould Belt survey toward the IC5146 molecular cloud and present a preliminary analysis of the filamentary structure in this region. The column density map, derived from our 70-500 micron Herschel data, reveals a complex network of filaments, and confirms that these filaments are the main birth ...
Arzoumanian, D., André, Ph., Didelon, P., Konyves, V., Schneider, N., Men'Shchikov, A., Sousbie, T., Zavagno, Annie, Bontemps, Sylvain, Di Francesco, J., Griffin, M., Hennemann, M., Hill1, T., Kirk, J., Martin, P., Minier, V., Molinari, S., Motte, F., Peretto, N., Pezzuto, S., Spinoglio, L., Ward-Thompson, D., White, G., Wilson, C. D.   +23 more
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Evolution of dust properties in an interstellar filament [PDF]

Astronomy & Astrophysics, 2003
We present submillimetre observations obtained using the balloon-borne experiment PRONAOS/SPM, from 200 to 600 μm with an angular resolution of 2-3.5', of a quiescent dense filament (typically A V ∼ 4) in the Taurus molecular complex. This filament, like many other molecular clouds, presents a deficit in its IRAS I 6 0 μ m /I 1 0 0 μ m flux ...
B. Stepnik, A. Abergel, J.-P. Bernard, F. Boulanger, L. Cambrésy, M. Giard, A. P. Jones, G. Lagache, J.-M. Lamarre, C. Meny, F. Pajot, F. Le Peintre, I. Ristorcelli, G. Serra, J.-P. Torre   +14 more
openaire   +1 more source

Galactic interstellar filaments as probed by LOFAR and Planck [PDF]

Monthly Notices of the Royal Astronomical Society: Letters, 2015
Abstract Recent Low-Frequency Array (LOFAR) observations at 115–175 MHz of a field at medium Galactic latitudes (centred at the bright quasar 3C196) have shown striking filamentary structures in polarization that extend over more than 4° across the sky.
Zaroubi, S., Jelić, V., de Bruyn, Alexandre, Boulanger, F., Bracco, A., Kooistra, R., Alves, M., Brentjens, M., Ferrière, K., Ghosh, T., Koopmans, L., Levrier, F., Miville-Deschênes, M.-A., Montier, L., Pandey, V., Soler, J.   +15 more
openaire   +5 more sources

Ionisation impact of high-mass stars on interstellar filaments [PDF]

Astronomy & Astrophysics, 2013
Context. Ionising stars reshape their original molecular cloud and impact star formation, leading to spectacular morphologies such as bipolar nebulae around HII regions. Molecular clouds are structured in filaments where stars principally form, as revealed by the Herschel space observatory.
Minier, V., Tremblin, P., Hill, T., Motte, F., André, Ph., Lo, N., Schneider, N., Audit, E., White, G. J., Hennemann, M., Cunningham, M., Deharveng, L., Didelon, P., Di Francesco, J., Elia, D., Giannini, T., Nguyen Luong, Q., Pezzuto, S., Rygl, K. L. J., Spinoglio, L., Ward-Thompson, D., Zavagno, A.   +21 more
openaire   +6 more sources