THE FAINT END OF THE GALAXY LUMINOSITY FUNCTION IN A1689: A STEEP RED FAINT END UPTURN AT <i>z</i>=0.18

Simple item page
dc.contributor.authorBanados, Eduardo
dc.contributor.authorHung, Li-Wei
dc.contributor.authorDe Propris, Roberto
dc.contributor.authorWest, Michael J.
dc.date.accessioned2025-01-21T00:04:47Z
dc.date.available2025-01-21T00:04:47Z
dc.date.issued2010
dc.description.abstractWe present a deep and wide I luminosity function (LF) for galaxies in A1689 (z = 0.183) from a mosaic of Hubble Space Telescope WFPC2 images covering 10' on the side. The main result of this work is the detection of a steep upturn in the dwarf galaxy LF, with alpha similar to-2. The dwarf-to-giant ratio appears to increase outward, but this is because giant galaxies are missing in the cluster outskirts, indicating luminosity segregation. The red sequence LF has the same parameters, within errors, as the total LF, showing that the faint end upturn consists of red quiescent galaxies. We speculate that the upturn is connected to the "filling-in" of the red sequence at z < 0.4 and may represent the latest installment of "downsizing" as the least massive galaxies are being quenched at the present epoch.
dc.fuente.origenWOS
dc.identifier.doi10.1088/2041-8205/721/1/L14
dc.identifier.eissn2041-8213
dc.identifier.issn2041-8205
dc.identifier.urihttps://doi.org/10.1088/2041-8205/721/1/L14
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/95521
dc.identifier.wosidWOS:000281610300004
dc.issue.numero1
dc.language.isoen
dc.pagina.finalL18
dc.pagina.inicioL14
dc.revistaAstrophysical journal letters
dc.rightsacceso restringido
dc.subjectgalaxies: clusters: individual (A1689)
dc.subjectgalaxies: dwarf
dc.subjectgalaxies: luminosity function, mass function
dc.titleTHE FAINT END OF THE GALAXY LUMINOSITY FUNCTION IN A1689: A STEEP RED FAINT END UPTURN AT <i>z</i>=0.18
dc.typeartículo
dc.volumen721
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
Files
Collections
Artículos de revistas