Detailed Information on Publication Record
2017
A uniform metallicity in the outskirts of massive, nearby galaxy clusters
URBAN, Ondrej, Norbert WERNER, S. W. ALLEN, A. SIMIONESCU, A. MANTZ et. al.Basic information
Original name
A uniform metallicity in the outskirts of massive, nearby galaxy clusters
Authors
URBAN, Ondrej (703 Slovakia), Norbert WERNER (703 Slovakia, guarantor, belonging to the institution), S. W. ALLEN (826 United Kingdom of Great Britain and Northern Ireland), A. SIMIONESCU (642 Romania) and A. MANTZ (840 United States of America)
Edition
Monthly Notices of the Royal Astronomical Society, Oxford, OXFORD UNIV PRESS, 2017, 0035-8711
Other information
Language
English
Type of outcome
Článek v odborném periodiku
Field of Study
10308 Astronomy
Country of publisher
United Kingdom of Great Britain and Northern Ireland
Confidentiality degree
není předmětem státního či obchodního tajemství
Impact factor
Impact factor: 5.194
RIV identification code
RIV/00216224:14310/17:00099812
Organization unit
Faculty of Science
UT WoS
000408207600058
Keywords in English
galaxies: clusters: intracluster medium; X-rays: galaxies: clusters
Tags
International impact, Reviewed
Změněno: 10/11/2022 12:58, Mgr. Marie Šípková, DiS.
Abstract
V originále
Suzaku measurements of a homogeneous metal distribution of Z similar to 0.3 Solar in the outskirts of the nearby Perseus cluster suggest that chemical elements were deposited and mixed into the intergalactic medium before clusters formed, likely over 10 billion years ago. A key prediction of this early enrichment scenario is that the intracluster medium in all massive clusters should be uniformly enriched to a similar level. Here, we confirm this prediction by determining the iron abundances in the outskirts (r > 0.25r(200)) of a sample of 10 other nearby galaxy clusters observed with Suzaku for which robust measurements based on the Fe-K lines can be made. Across our sample, the iron abundances are consistent with a constant value, Z(Fe) = 0.316 +/- 0.012 Solar (chi(2) = 28.85 for 25 degrees of freedom). This is remarkably similar to the measurements for the Perseus cluster of Z(Fe) = 0.314 +/- 0.012 Solar, using the Solar abundance scale of Asplund et al.