dc.date.accessioned | 2019-12-18T18:14:25Z | |
dc.date.accessioned | 2022-10-18T22:32:45Z | |
dc.date.available | 2019-12-18T18:14:25Z | |
dc.date.available | 2022-10-18T22:32:45Z | |
dc.date.created | 2019-12-18T18:14:25Z | |
dc.date.issued | 2008 | |
dc.identifier | http://hdl.handle.net/10533/236954 | |
dc.identifier | 15010003 | |
dc.identifier | WOS:000251813700019 | |
dc.identifier | eid=2-s2.0-37349009644 | |
dc.identifier.uri | https://repositorioslatinoamericanos.uchile.cl/handle/2250/4468292 | |
dc.description.abstract | We report on the discovery of the z= 1.016 cluster RzCS 052 using a modified red-sequence method, follow up spectroscopy and X-ray imaging. This cluster has a velocity dispersion of 710 ± 150 km s −1 , a virial mass of 4.0 × 10 14 M ⊙ (based on 21 spectroscopically confirmed members) and an X-ray luminosity of (0.68 ± 0.47) × 10 44 erg s −1 in the [1–4] keV band. This optically selected cluster appears to be of richness class 3 and to follow the known L X –σ v relation for high-redshift X-ray selected clusters. Using these data, we find that the halo occupation number for this cluster is only marginally consistent with what was expected assuming a self-similar evolution of cluster scaling relations, suggesting perhaps a break of them at z∼ 1. We also rule out a strong galaxy merging activity between z= 1 and today. Finally, we present a Bayesian approach to measuring cluster velocity dispersions and X-ray luminosities in the presence of a background: we critically reanalyse recent claims for X-ray underluminous clusters using these techniques and find that the clusters can be accommodated within the existing L X –σ v relation. | |
dc.language | eng | |
dc.relation | https://ieeexplore.ieee.org/document/8193701 | |
dc.relation | 10.1111/j.1365-2966.2007.12541.x | |
dc.relation | info:eu-repo/grantAgreement/Fondap/15010003 | |
dc.relation | instname: Conicyt | |
dc.relation | reponame: Repositorio Digital RI2.0 | |
dc.rights | info:eu-repo/semantics/openAccess | |
dc.rights | Atribución-NoComercial-SinDerivadas 3.0 Chile | |
dc.rights | http://creativecommons.org/licenses/by-nc-nd/3.0/cl/ | |
dc.title | Scaling relations of the colour-detected cluster RzCS 052 at z = 1.016 and some other high-redshift clusters | |
dc.type | Articulo | |