Internal dynamics of the z ~ 0.8 cluster RX J0152.7-1357
نویسندگان
چکیده
منابع مشابه
Internal dynamics of the z ∼ 0 . 8 cluster RX J 0152 . 7 − 1357 ⋆
We present the results from the dynamical analysis of the cluster of galaxies RX J0152.7−1357, which shows a complex structure in its X–ray emission, with two major clumps in the central region, and a third clump in the Eastern region. Our analysis is based on redshift data for 187 galaxies. We find that RX J0152.7−1357 appears as a well isolated peak in the redshift space at z = 0.836, which i...
متن کاملA VLT spectroscopic survey of RX J 0152 . 7 - 1357 , a forming cluster of galaxies at z = 0 . 837 ,
We present the results of an extensive spectroscopic survey of RX J0152.7-1357, one of the most massive distant clusters of galaxies known. Multi-object spectroscopy, carried out with FORS1 and FORS2 on the ESO Very Large Telescope (VLT), has allowed us to measure more than 200 redshifts in the cluster field and to confirm 102 galaxies as cluster members. The mean redshift of the cluster is z =...
متن کاملXMM-Newton OBSERVES CLJ0152.7−1357: A MASSIVE GALAXY CLUSTER FORMING AT MERGER CROSSROADS AT Z = 0.83
We present an analysis of a 50 ks XMM-Newton observation of the merging galaxy cluster ClJ0152.7−1357 at z = 0.83. In addition to the two main subclusters and an infalling group detected in an earlier Chandra observation of the system, XMM-Newton detects another group of galaxies possibly associated with the cluster. This group may be connected to the northern subcluster by a filament of cool (...
متن کاملRXJ0152.7–1357: STELLAR POPULATIONS IN AN X-RAY LUMINOUS GALAXY CLUSTER AT z=0.83
We present a study of the stellar populations of galaxies in the cluster RXJ0152.7–1357 at a redshift of 0.83. The study is based on new high signal-to-noise spectroscopy of 29 cluster members covering the wavelength range 5000-10000Å as well as riz photometry of the cluster. We use scaling relations between the central velocity dispersions of the galaxies and their luminosities, Balmer line st...
متن کاملWeak Lensing Analysis of the z ≃ 0 . 8 cluster CL 0152 - 1357 with the Advanced Camera for Surveys
We present a weak lensing analysis of the X-ray luminous cluster CL 0152-1357 at z ≃ 0.84 using HST/ACS observations. The unparalleled resolution and sensitivity of ACS enable us to measure weakly distorted, faint background galaxies to the extent that the number density reaches ∼ 175 arcmin −2. The PSF of ACS has a complicated shape that also varies across the field. We construct a PSF model f...
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ژورنال
عنوان ژورنال: Astronomy & Astrophysics
سال: 2005
ISSN: 0004-6361,1432-0746
DOI: 10.1051/0004-6361:20053232