Premium
Candidates for Abundance Gradients at Intermediate Red‐Shift Clusters
Author(s) -
DUPKE RENATO A.
Publication year - 1998
Publication title -
annals of the new york academy of sciences
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.712
H-Index - 248
eISSN - 1749-6632
pISSN - 0077-8923
DOI - 10.1111/j.1749-6632.1998.tb11261.x
Subject(s) - abundance (ecology) , astrophysics , physics , galaxy , galaxy cluster , astronomy , biology , ecology
In this work I present evidence for the possible existence of central abundance enhancements in two clusters of galaxies at intermediate redshifts: Abell 1413 (z ∼ 0.14) and Abell 2390 (z ∼ 0.23). The results are based on ASCA (Advanced Satellite for Cosmolgy and Astrophysics) data reduction of x‐ray spatially resolved spectra. The Fe abundance for A1413 drops from 0.37 ± 0.08 (in the central 2 arcmin) to 0.20 ± 0.06 (in the outer 2‐6 arcmin), while in A2390 the very central abundance is 0.77 ± 0.45 (central arcmin) and drops to 0.12 ± 0.12 in the outer regions.