A Chandra and XMM View of the Metals in Groups and Clusters of Galaxies

Details A Chandra and XMM View of the Metals in Groups and Clusters of Galaxies A Chandra and XMM View of the Metals in Groups and Clusters of Galaxies

Apr 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003aps..apr.h3002b&link_type=abstract

American Physical Society, April Meeting, 2003, April 5-8, 2003 Philadelphia, Pennsylvania, MEETING ID: APR03, abstract #H3.002

Physics

Scientific paper

I review measurements of the metal abundances in the hot gas of groups and clusters of galaxies obtained from recent X-ray observations with the Chandra and XMM satellites. Initial studies of the iron and silicon abundances in centrally E-dominated groups show that they have pronounced gradients from 1-2 solar values within the central 30-50 kpc that fall to values of 0.3-0.5 solar at larger radii. The Si/Fe ratios are consistent with approximately 80% of the metals originating from Type Ia supernovae. Several cD clusters also display central Fe enhancements suggestive of Type Ia supernova enrichment, though some have central dips that may provide a vital clue for solving the cooling flow mystery.

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