ON THE MEAN DENSITY OF GALAXIES AND IDENTIFICATION OF STRUCTURES

ON THE MEAN DENSITY OF GALAXIES AND IDENTIFICATION OF STRUCTURES

We discuss the difficulty of detecting of galaxy structures when the Voronoi tessellation technique is applied to two dimensional data. The problem relates to the determination of the mean density of objects in an investigated field. For data originating from plates with different limiting magnitu...

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Main Authors: E. Panko, P. Flin
Format: Article
Language:English
Published: Odessa I. I. Mechnykov National University 2017-04-01
Series:Odessa Astronomical Publications
Online Access:http://oap.onu.edu.ua/article/view/98257
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spelling doaj-7d5c2c7791b842d58ab4f9698f2b138f2020-11-25T02:40:50ZengOdessa I. I. Mechnykov National UniversityOdessa Astronomical Publications1810-42152017-04-01180818310.18524/1810-4215.2005.18.9825798257ON THE MEAN DENSITY OF GALAXIES AND IDENTIFICATION OF STRUCTURESE. Panko0P. FlinAstronomical Observatory, Nikolaev State University Nikolskaya, 24, Nikolaev 54030 UkraineWe discuss the difficulty of detecting of galaxy structures when the Voronoi tessellation technique is applied to two dimensional data. The problem relates to the determination of the mean density of objects in an investigated field. For data originating from plates with different limiting magnitudes there are subregions with totally different galaxy densities in the different part of investigated field. As a result galaxy structures being more numerous in more populated regions. The described effect is a general one, since all wide-field optical surveys have been made from plates with different magnitude limits.http://oap.onu.edu.ua/article/view/98257
collection DOAJ
language English
format Article
sources DOAJ
author E. Panko
P. Flin
spellingShingle E. Panko
P. Flin
ON THE MEAN DENSITY OF GALAXIES AND IDENTIFICATION OF STRUCTURES
Odessa Astronomical Publications
author_facet E. Panko
P. Flin
author_sort E. Panko
title ON THE MEAN DENSITY OF GALAXIES AND IDENTIFICATION OF STRUCTURES
title_short ON THE MEAN DENSITY OF GALAXIES AND IDENTIFICATION OF STRUCTURES
title_full ON THE MEAN DENSITY OF GALAXIES AND IDENTIFICATION OF STRUCTURES
title_fullStr ON THE MEAN DENSITY OF GALAXIES AND IDENTIFICATION OF STRUCTURES
title_full_unstemmed ON THE MEAN DENSITY OF GALAXIES AND IDENTIFICATION OF STRUCTURES
title_sort on the mean density of galaxies and identification of structures
publisher Odessa I. I. Mechnykov National University
series Odessa Astronomical Publications
issn 1810-4215
publishDate 2017-04-01
description We discuss the difficulty of detecting of galaxy structures when the Voronoi tessellation technique is applied to two dimensional data. The problem relates to the determination of the mean density of objects in an investigated field. For data originating from plates with different limiting magnitudes there are subregions with totally different galaxy densities in the different part of investigated field. As a result galaxy structures being more numerous in more populated regions. The described effect is a general one, since all wide-field optical surveys have been made from plates with different magnitude limits.
url http://oap.onu.edu.ua/article/view/98257
work_keys_str_mv AT epanko onthemeandensityofgalaxiesandidentificationofstructures
AT pflin onthemeandensityofgalaxiesandidentificationofstructures
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