Batch discovery of nine <i>z</i> ∼ 1 clusters using X-ray and <i>K</i> or <i>R</i>, <i>z</i>′ images

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dc.contributor.authorAndreon, S
dc.contributor.authorValtchanov, I
dc.contributor.authorJones, LR
dc.contributor.authorAltieri, B
dc.contributor.authorBremer, M
dc.contributor.authorWillis, J
dc.contributor.authorPierre, M
dc.contributor.authorQuintana, H
dc.date.accessioned2025-01-21T01:06:54Z
dc.date.available2025-01-21T01:06:54Z
dc.date.issued2005
dc.description.abstractWe present the results of an initial search for clusters of galaxies at z similar to 1 and above, using data from 2.9 square degrees of XMM-Newton images. By selecting weak potentially extended X-ray sources with faint or no identifications in deep, ground-based optical imaging, we have constructed a starting sample of 19 high-redshift cluster candidates. Near-IR and R, z' imaging of these fields identified nine of them as high-redshift systems. Six of these were confirmed spectroscopically, three at z similar to 1.0 and the other three in the 0.8 < Z < 0.92 range. The remaining three systems have solid photometric evidence to be at Z(phot) similar to 0-8, 1.0 and 1.3. The present sample significantly increases the number of such clusters. The measured density of z I clusters, after discarding 'low'-redshift systems at z less than or similar to 0.92 is about 1.7 deg(-2) (with 68 per cent confidence interval equal to [1.0, 2.9]) for f(x) greater than or similar to 2.5 10(-15) erg cm(-2) s(-1) ([0.5-2] keV) and this is a lower limit, having, screened not all potential z similar to 1 candidate clusters. Coordinates, X-ray measures and evidence for nine X-ray-selected high-redshift clusters is given.
dc.fuente.origenWOS
dc.identifier.doi10.1111/j.1365-2966.2005.08998.x
dc.identifier.eissn1365-2966
dc.identifier.issn0035-8711
dc.identifier.urihttps://doi.org/10.1111/j.1365-2966.2005.08998.x
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/96242
dc.identifier.wosidWOS:000229640600005
dc.issue.numero4
dc.language.isoen
dc.pagina.final1260
dc.pagina.inicio1250
dc.revistaMonthly notices of the royal astronomical society
dc.rightsacceso restringido
dc.subjectgalaxies : clusters : general
dc.subjectcosmology : observations
dc.subjectX-rays : galaxies : clusters
dc.titleBatch discovery of nine <i>z</i> ∼ 1 clusters using X-ray and <i>K</i> or <i>R</i>, <i>z</i>′ images
dc.typeartículo
dc.volumen359
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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