Astronomy and Astrophysics – Astronomy
Scientific paper
May 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992aas...180.2406c&link_type=abstract
American Astronomical Society, 180th AAS Meeting, #24.06; Bulletin of the American Astronomical Society, Vol. 24, p.762
Astronomy and Astrophysics
Astronomy
Scientific paper
Column density maps derived from 60 and 100 micron IRAS images of several regions of low mass star formation are presented. These maps contain as many as 3 times 10(5) resolution elements and display very complex and diverse patterns. The multifractal scaling of this structure is studied through the f(alpha ) spectrum of singularities, a tool commonly used in non-linear dynamics for characterizing complex images and time series. All subregions with adequate data were found to exhibit well-defined multifractal scaling. The shape of the f(alpha ) spectum was found to vary radically from region to region implying that the column density structures do not form a single `universality' class, in contrast to indications for incompressible turbulence. These results are intriguing in light of the apparently universal perimeter-area scaling exponents found for many of the same regions.
Chappell David W.
Scalo John M.
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