Can I read The Enrichment of the Intracluster Medium on EtoBox?

The Enrichment of the Intracluster Medium by Sivanandam, Suresh; Zabludoff, Ann I.; Zaritsky, Dennis; Gonzalez, Anthony H.; Kelson, Dan D. is a scholarly article available to read on EtoBox.

What is The Enrichment of the Intracluster Medium about?

To determine the relative contributions of galactic and intracluster stars to the enrichment of the intracluster medium (ICM), we present X-ray surface brightness, temperature, and Fe abundance profiles for a set of twelve galaxy clusters for which we have extensive optical photometry. Assuming a standard IMF and simple chemical evolution model scaled to match the present-day cluster early-type SN Ia rate, the stars in the brightest cluster galaxy (BCG) plus the intracluster stars (ICS) generate 31^{+11}_{-9}%, on average, of the observed ICM Fe within r_{500} (~ 0.6 times r_{200}, the virial radius). An alternate, two-component SN Ia model (including both prompt and delayed detonations) produces a similar BCG+ICS contribution of 22^{+9}_{-9}%. Because the ICS typically contribute 80% of the BCG+ICS Fe, we conclude that the ICS are significant, yet often neglected, contributors to the ICM Fe within r_{500}. However, the BCG+ICS fall short of producing all the Fe, so metal loss from stars in other cluster galaxies must also contribute. By combining the enrichment from intracluster and galactic stars, we can account for all the observed Fe. These models require a galactic metal loss

Author

Sivanandam, Suresh; Zabludoff, Ann I.; Zaritsky, Dennis; Gonzalez, Anthony H.; Kelson, Dan D.

Published

2008

Language

EN