Probing Intermediate Ionization Gas in the Perseus and Virgo Clusters

Details Probing Intermediate Ionization Gas in the Perseus and Virgo Clusters Probing Intermediate Ionization Gas in the Perseus and Virgo Clusters

Jul 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009hst..prop12260j&link_type=abstract

HST Proposal ID #12260. Cycle 18

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Scientific paper

The physics of the evolution of X-ray emitting gas in the cores of clusters is now known to be much more complex than the simple cooling model. In order to understand how the observed molecular/atomic and keV components interact we need to probe the full range of gas phases between these components.We therefore propose deep ultraviolet spectra of the active nucleii in NGC1275 and M87, the central galaxies in the Perseus and Virgo clusters. Discovery of absorption lines from highly ionized species such as CIV and SiIV will provide a sensitive diagnostic of this crucial intermediate phase of the intracluster medium that is not accessible in any other way.;

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