The fractal dimension of star-forming sites in galaxies

Details The fractal dimension of star-forming sites in galaxies The fractal dimension of star-forming sites in galaxies

Jun 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987a%26a...179..249f&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 179, no. 1-2, June 1987, p. 249-254.

Statistics

Computation

25

Computational Astrophysics, Fractals, Spiral Galaxies, Star Distribution, Star Formation, Classifications, H Ii Regions, Hydrogen Ions, Interstellar Matter, Star Clusters, Stellar Luminosity

Scientific paper

The fractal dimension D of the distribution of star-forming sites in 19 spiral galaxies is determined according to Mandelbrot's (1983) fractal theory. A total of 7644 H II regions are used as indicators of recent star formation. The patchiness of these H II regions is quantified by the fractal dimension. The typical scale length of star formation is deduced by a cluster hierarchy. The mean fractal dimension is D = 1.68 for the distribution of the star-forming sites and seems to be a constant parameter for all the spiral galaxies.

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