The Morphological Analysis of the Universe - Yongfeng Wu - Kirjat - LAP LAMBERT Academic Publishing - 9783845411088 - keskiviikko 13. heinäkuuta 2011
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The Morphological Analysis of the Universe

Yongfeng Wu

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The Morphological Analysis of the Universe

A multi-scale morphological analysis of the Sloan Digital Sky Survey (SDSS) Data Release 5 (DR5) was performed. We adapted the Metric Space Technique to perform a space-scale morphological analysis by filtering the galaxy point distributions with a smoothing Gaussian function, thus giving quantitative structural information on a range of scale sizes. The analysis was performed on 2-D (a dozen slices of a volume of space containing many newly measured galaxies from the SDSS DR5 survey) and 3-D data. Using the MST, observational data was compared to galaxy samples taken from N-body simulations with current best estimates of cosmological parameters and from random catalogs. By using the maximal ranking method among MST output functions we also developed a way to quantify the overall similarity of the observed samples with the simulated samples. MST does uncover some new multi-scale morphological properties and appears to be a good tool to measure those properties by clearly distinguishing the samples.

Media Kirjat     Paperback Book   (Kirja pehmeillä kansilla ja liimatulla selällä)
Julkaisupäivämäärä keskiviikko 13. heinäkuuta 2011
ISBN13 9783845411088
Tuottaja LAP LAMBERT Academic Publishing
Sivujen määrä 120
Mitta 152 × 229 × 7 mm   ·   197 g
Kieli German  

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