Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aas...21110707s&link_type=abstract
American Astronomical Society, AAS Meeting #211, #107.07; Bulletin of the American Astronomical Society, Vol. 39, p.935
Astronomy and Astrophysics
Astronomy
Scientific paper
The role of intracluster stars in the metal enrichment of the intracluster medium is unknown but possibly large since their resulting supernovae will inject metals directly into the ICM. In order to investigate the relative role that host versus hostless supernovae play in ICM metal enrichment, we have undertaken a large survey of 50 X-ray selected galaxy clusters (0.1 < z < 0.2) using the 1 degree imager on the 2.3m Bok telescope. We have three principal goals: 1) determine the mean fraction of intracluster star light by observing the relative fraction of host versus hostless SN-Ia, 2) determine the overall SNe-Ia rate in our cluster sample sufficiently well to place clear constraints on the SN-Ia 'delay time', which is the time between the formation of a stellar system and the eventual explosion of some of its members as SN-Ia, and 3) combine these two measurements to determine the contribution of intracluster SNe to the global chemical enrichment of clusters. Here we present the initial results of the survey and future plans.
Clowe Doug
Herbert-Fort Stéphane
Sand David J.
Sivanandam Suresh
Zaritsky Dennis
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