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Filaments in observed and mock galaxy catalogues

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Filaments in observed and mock galaxy catalogues

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dc.contributor.author Martínez García, Vicent Josep
dc.contributor.author Stoica, R.S.
dc.contributor.author Saar, E.
dc.date.accessioned 2010-06-08T10:29:10Z
dc.date.available 2010-06-08T10:29:10Z
dc.date.issued 2010
dc.identifier.citation STOICA, R.S., MARTINEZ, V.J. and SAAR, E. (2010): Filaments in observed and mock galaxy catalogues, Astronomy and Astrophysics, vol. 510, núm. 1, art. A38. en
dc.identifier.uri http://hdl.handle.net/10550/12900
dc.description.abstract Context. The main feature of the spatial large-scale galaxy distribution is an intricate network of galaxy filaments. Although many attempts have been made to quantify this network, there is no unique and satisfactory recipe for that yet. Aims. The present paper compares the filaments in the real data and in the numerical models, to see if our best models reproduce statistically the filamentary network of galaxies. Methods. We apply an object point process with interactions (the Bisous process) to trace and describe the filamentary network both in the observed samples (the 2dFGRS catalogue) and in the numerical models that have been prepared to mimic the data. We compare the networks. Results. We find that the properties of filaments in numerical models (mock samples) have a large variance. A few mock samples display filaments that resemble the observed filaments, but usually the model filaments are much shorter and do not form an extended network. Conclusions. Weconcludethatalthoughwecanbuildnumericalmodelsthataresimilartoobservationsinmanyrespects,theymay fail yet to explain the filamentary structure seen in the data. The Bisous-built filaments are a good test for such a structure. en
dc.language.iso en en
dc.subject Cosmology : large; Scale structure of Universe; Methods : data analysis; Methods : statistical en
dc.title Filaments in observed and mock galaxy catalogues en
dc.type journal article es_ES
dc.subject.unesco UNESCO::ASTRONOMÍA Y ASTROFÍSICA::Cosmología y cosmogonia en
dc.subject.unesco UNESCO::ASTRONOMÍA Y ASTROFÍSICA::Cosmología y cosmogonia::Otras en
dc.identifier.doi 10.1051/0004-6361/200912823 en
dc.type.hasVersion VoR es_ES
dc.identifier.url http://www.aanda.org/index.php?option=article&access=doi&doi=10.1051/0004-6361/200912823 en

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