Astronomy and Astrophysics – Astronomy
Scientific paper
Aug 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aj....134..511v&link_type=abstract
The Astronomical Journal, Volume 134, Issue 2, pp. 511-515.
Astronomy and Astrophysics
Astronomy
1
Dust, Extinction, Infrared: Ism, Ism: Magnetic Fields, Polarization, Stars: Formation
Scientific paper
We have found relations characterizing two large filaments embedded in hot cavities and a shell surrounding a hot cavity. These data come from multiconstituent (gas/dust/field) homogeneous maps of the same objects modeled in the same manner. We find that the total external pressure of the cavity environment surrounding our filaments and shell is large and about equal to the total internal pressure inside the filaments and the shell. Also, we find that the filament width decreases with increasing total pressure. We expect that our work will provide a deeper insight into the origin and properties of filaments and the surrounding large-scale structure. Models of filaments neglecting a strong pressure from the outside environment would need modifications. Models requiring strong magnetism inside the filaments or shell, sufficiently strong to contain gas turbulence, do not seem to be favored by our thin filaments or shell.
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