The Evolution of Low-Redshift Galaxy Structures

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dc.contributor.authorBiernacka, Monika
dc.contributor.authorFlin, Piotr
dc.contributor.authorPanko, Olena O.
dc.contributor.authorПанько, Олена Олексіївна
dc.contributor.authorПанько, Елена Алексеевна
dc.date.accessioned2019-05-16T08:56:52Z
dc.date.available2019-05-16T08:56:52Z
dc.date.issued2009
dc.description.abstractEllipticities for 6188 low-redshift (z < 0.18) poor and rich galaxy structures have been examined along with their evolution using an optical observational base that is statistically complete. The shape of each structure projected on the celestial sphere was determined using the covariance ellipse method. Analysis of the data indicates that structure ellipticity changes with redshift, being smaller for nearby objects and greater for those located further away. Such a change is also described better by quadratic or exponential relations than by a simple linear scheme. It is concluded that between redshifts of z = 0.18 and z = 0 we observe the dynamical evolution of galaxy clusters. Such a change in ellipticity with redshift is expected in ΛCDM models.uk_UA
dc.identifierdoi:10.1088/0004-637X/696/2/1689
dc.identifier.citationThe Astrophysical Journaluk_UA
dc.identifier.urihttps://dspace.onu.edu.ua/handle/123456789/24044
dc.language.isoenuk_UA
dc.relation.ispartofseries;Vol. 696, is. 2.
dc.subjectgalaxiesuk_UA
dc.subjectclustersuk_UA
dc.subjectgeneral – galaxiesuk_UA
dc.subjectevolutionuk_UA
dc.subjectlarge-scale structure of universeuk_UA
dc.titleThe Evolution of Low-Redshift Galaxy Structuresuk_UA
dc.typeArticleuk_UA
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