Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991mnras.248..313k&link_type=abstract
Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 248, Jan. 15, 1991, p. 313-324. Research supported by C
Astronomy and Astrophysics
Astronomy
75
Astronomical Spectroscopy, Galactic Clusters, Spatial Distribution, Astronomical Catalogs, Monte Carlo Method, Southern Sky, Voids
Scientific paper
An algorithm has been developed to search for nearly spherical regions which are devoid of bright galaxies. The presence of empty regions, or voids, is an intrinsic property of any spatial point data set. Some means must thus be found of distinguishing between voids which are simply the results of underdensities in the observational data, and voids which have been produced by some physical mechanism. The significance of various voids has been assessed by means of Monte Carlo simulations, using random catalogs which mimic the selection effects of the actual data set. The resultant list of more than 100 voids throughout the entire sky is then used to derive a spectrum of void sizes.
Fairall Anthony P.
Kauffmann Guinevere
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