Alignment of the central galaxies with the environment

dc.creatorRodriguez, Facundo
dc.creatorMerchan, Manuel Enrique
dc.creatorArtale, Maria Celeste
dc.date2022-07
dc.date.accessioned2023-08-31T00:12:35Z
dc.date.available2023-08-31T00:12:35Z
dc.identifierhttp://hdl.handle.net/11336/202779
dc.identifierRodriguez, Facundo; Merchan, Manuel Enrique; Artale, Maria Celeste; Alignment of the central galaxies with the environment; Oxford University Press; Monthly Notices of the Royal Astronomical Society; 514; 1; 7-2022; 1077-1087
dc.identifier0035-8711
dc.identifierCONICET Digital
dc.identifierCONICET
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/8543209
dc.descriptionIn this work, we combine ellipticity and major axis position angle measurements from the Sloan Digital Sky Server Data Release 16 with the group finder algorithm of Rodriguez & Merchan to determine the alignment of the central galaxies with the surrounding structures and satellite galaxies lying in their group. We use two independent methods: a modified version of the two- point cross-correlation function and the angle between the central galaxy orientation and the satellite galaxies relative position. The first method allows us to study the inner and outer regions of the cluster, while the second method provides information within the haloes. Our results show that central galaxies present anisotropy in the correlation function up to ∼10 h -1 Mpc , which becomes ∼10 per cent stronger for the brightest ones ( 0.1 M r < -21.5). When we split the galaxy sample by colour, we find that red central galaxies are the main contributors to this anisotropy. We also show that this behaviour does not depend on the group mass or central galaxy ellipticity . Finally , our results are in agreement with previous findings, showing that the two-point cross-correlation function is a good tracer of the galaxy alignments using all galaxies and not only those of the group to which it belongs. In addition, this feature allows us to explore the behaviour of the alignment on larger scales.
dc.descriptionFil: Rodriguez, Facundo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Astronomía Teórica y Experimental. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Instituto de Astronomía Teórica y Experimental; Argentina
dc.descriptionFil: Merchan, Manuel Enrique. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Astronomía Teórica y Experimental. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Instituto de Astronomía Teórica y Experimental; Argentina
dc.descriptionFil: Artale, Maria Celeste. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Astronomía Teórica y Experimental. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Instituto de Astronomía Teórica y Experimental; Argentina. Università di Padova; Italia. Istituto Nazionale di Fisica Nucleare; Italia
dc.formatapplication/pdf
dc.formatapplication/pdf
dc.languageeng
dc.publisherOxford University Press
dc.relationinfo:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/mnras/article-abstract/514/1/1077/6591599?redirectedFrom=fulltext&login=false
dc.relationinfo:eu-repo/semantics/altIdentifier/doi/10.1093/mnras/stac1428
dc.rightsinfo:eu-repo/semantics/restrictedAccess
dc.rightshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subjectDARK MATTER
dc.subjectGALAXIES: GROUPS: GENERAL
dc.subjectGALAXIES: HALOES
dc.subjectLARGE-SCALE STRUCTURE OF UNIVERSE
dc.subjectMETHODS: STATISTICAL
dc.subjecthttps://purl.org/becyt/ford/1.3
dc.subjecthttps://purl.org/becyt/ford/1
dc.titleAlignment of the central galaxies with the environment
dc.typeinfo:eu-repo/semantics/article
dc.typeinfo:ar-repo/semantics/artículo
dc.typeinfo:eu-repo/semantics/publishedVersion


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