Minkowski Functionals of SDSS galaxies I : Analysis of Excursion Sets

Chiaki Hikage,Jens Schmalzing,Thomas Buchert,Yasushi Suto,Issha Kayo,Atsushi Taruya,Michael S. Vogeley,Fiona Hoyle,J. Richard Gott III,Jon Brinkmann

Publications of the Astronomical Society of Japan（2003）

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摘要

We present a first morphometric investigation of a preliminary sample from the SDSS of 154287 galaxies with apparent magnitude $14.5 < m_r < 17.5$ and redshift $0.001 < z < 0.4$. We measure the Minkowski Functionals, which are a complete set of morphological descriptors. To account for the complicated wedge-like geometry of the present survey data, we construct isodensity contour surfaces from the...

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关键词

large-scale structure of universe,cosmology: observations,methods: statistical

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