2008A&A...481L..73F


C.D.S. - SIMBAD4 rel 1.7 - 2020.07.12CEST11:51:09

2008A&A...481L..73F - Astronomy and Astrophysics, volume 481, L73-77 (2008/4-2)

Indications for 3Mpc-scale large-scale structure associated with an X-ray luminous cluster of galaxies at z=0.95.

FASSBENDER R., BOEHRINGER H., LAMER G., MULLIS C.R., ROSATI P., SCHWOPE A., KOHNERT J. and SANTOS J.S.

Abstract (from CDS):

X-ray luminous clusters of galaxies at z∼1 are emerging as major cosmological probes and are fundamental tools to study the cosmic large-scale structure and environmental effects of galaxy evolution at large look-back times. We present details of the newly-discovered galaxy cluster XMMUJ0104.4-0630 at z=0.947 and a probable associated system in the LSS environment. The clusters were found in a systematic study for high-redshift systems using deep archival XMM-Newton data for the serendipitous detection and the X-ray analysis, complemented by optical/near-infrared (NIR) imaging observations and spectroscopy of the main cluster. We find a well-evolved, intermediate luminosity cluster with L0.5–2.0keVX=(6.4±1.3)x1043h–270erg/s and strong central 1.4GHz radio emission. The cluster galaxy population exhibits a pronounced transition toward bluer colors at cluster-centric distances of 1-2 core radii, consistent with an age difference of 1-2Gyr for a single burst solar metallicity model. The second, less evolved X-ray cluster at a projected distance of 6.4' (∼3Mpc) and a concordant red-sequence color likely forms a cluster-cluster bridge with the main target as part of its surrounding large-scale structure at z≃0.95.

Abstract Copyright:

Journal keyword(s): galaxies: clusters: general - X-rays: galaxies: clusters - cosmology: large-scale structure of Universe - galaxies: elliptical and lenticular, cD - galaxies: evolution

Nomenclature: Table 1: [FBL2008] A (Nos A-B) = [FBL2008] JHHMM.m+DDMM N=2.

Simbad objects: 2

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Number of rows : 2

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 ClG J0104-0635 ClG 01 04 07.12 -06 35 21.6           ~ 1 0
2 ClG J0104-0630 ClG 01 04 21.96 -06 30 05.7           ~ 2 0

    Equat.    Gal    SGal    Ecl

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2020.07.12-11:51:09

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