The faint-end of the galaxy luminosity function in groups

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dc.contributor.authorGonzález, RE
dc.contributor.authorLares, M
dc.contributor.authorLambas, DG
dc.contributor.authorValotto, C
dc.date.accessioned2025-01-21T01:06:32Z
dc.date.available2025-01-21T01:06:32Z
dc.date.issued2006
dc.description.abstractWe compute the galaxy luminosity function in spectroscopically selected nearby groups and clusters. Our sample comprises 728 systems extracted from the third release of the Sloan Digital Sky Survey in the redshift range 0.03 < z < 0.06 with virial mass range 10(11) M-circle dot < M-vir < 2 x 10(14) M-circle dot. To compute the galaxy luminosity function, we apply a statistical background subtraction method following usually adopted techniques. In the r band, the composite galaxy luminosity function shows a slope alpha = - 1.3 in the bright-end, and an upturn of the slope in the faint-end, M-r greater than or similar to -18 + 5 log (h), to slopes -1.9 < a < -1.6. We find that this feature is present also in the i, g and z bands, and for all explored group subsamples, irrespective of the group mass, number of members, integrated color or the presence of a hot intra-cluster gas associated to X-ray emission.
dc.fuente.origenWOS
dc.identifier.doi10.1051/0004-6361:20053277
dc.identifier.issn1432-0746
dc.identifier.urihttps://doi.org/10.1051/0004-6361:20053277
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/96177
dc.identifier.wosidWOS:000233995600009
dc.issue.numero1
dc.language.isoen
dc.pagina.final58
dc.pagina.inicio51
dc.revistaAstronomy & astrophysics
dc.rightsacceso restringido
dc.subjectmethods : statistical
dc.subjectgalaxies : clusters : general
dc.subjectgalaxies : luminosity function, mass function
dc.titleThe faint-end of the galaxy luminosity function in groups
dc.typeartículo
dc.volumen445
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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