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Type: Artigo de periódico
Title: A possible mechanism to form low mass objects at low redshifts
Author: Ribeiro, A
Letelier, P
Abstract: We develop a quantitative criterion for the collapse of matter within a region where a global texture just collapsed and a non-zero peculiar velocity field is produced. We also describe the evolution of the density contrast in this region according to the non-linear spherical collapse model. In particular, we find that the overdensity needed to virialisation is reached at z <= 2.2, covering a mass range of about 10(4)-10(7) M-circle dot in the context of an Einstein-de Sitter universe.
Subject: cosmology
galaxy formation
Country: Holanda
Editor: Springer
Rights: fechado
Identifier DOI: 10.1007/s10509-005-5838-4
Date Issue: 2005
Appears in Collections:Unicamp - Artigos e Outros Documentos

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