Feedback from intra-cluster supernovae on the ICM in cooling flow galaxy clusters

Free access article

Issue		A&A Volume 425, Number 2, October II 2004


Page(s)		L21 - L24
Section		Letters
DOI		http://dx.doi.org/10.1051/0004-6361:20040178

A&A 425, L21-L24 (2004)
DOI: 10.1051/0004-6361:20040178

Letter

Feedback from intra-cluster supernovae on the ICM in cooling flow galaxy clusters

W. Domainko, M. Gitti, S. Schindler and W. Kapferer

Institut für Astrophysik, Leopold-Franzens Universität Innsbruck Technikerstraße 25, 6020 Innsbruck, Austria
e-mail: wilfried.domainko@uibk.ac.at

(Received 14 November 2003 / Accepted 21 May 2004 )

Abstract
We study the effect of heating and metal enrichment from supernovae (SNe) residing between galaxies on the Intra-Cluster Medium (ICM). Recent observations indicate that a considerable fraction (~20%) of the SN Ia parent stellar population in galaxy clusters is intergalactic. By considering their effect on the relaxed progenitors of cooling flow clusters we propose that intra-cluster SNe can act as a distributed heating source which may influence the initial stages of the formation of cooling flows. We investigate the increase in cooling time as a function of the energy input supplied by SNe and their assumed spatial distribution, and conclude that intra-cluster SNe represent a heating source which in some clusters can cause a delay of the formation of cooling flows. This would imply that some cooling flows are younger than previously thought. We also discuss the impact that a large population of intra-cluster SNe could have on the chemical evolution of the ICM in cooling flow clusters.

Key words: supernovae: general -- galaxies: clusters: general -- X-ray: galaxies: clusters -- cooling flows

SIMBAD Objects

What is OpenURL?

The OpenURL standard is a protocol for transmission of metadata describing the resource that you wish to access. An OpenURL link contains article metadata and directs it to the OpenURL server of your choice. The OpenURL server can provide access to the resource and also offer complementary services (specific search engine, export of references...). The OpenURL link can be generated by different means.

If your librarian has set up your subscription with an OpenURL resolver, OpenURL links appear automatically on the abstract pages.
You can define your own OpenURL resolver with your EDPS Account. In this case your choice will be given priority over that of your library.
You can use an add-on for your browser (Firefox or I.E.) to display OpenURL links on a page (see http://www.openly.com/openurlref/). You should disable this module if you wish to use the OpenURL server that you or your library have defined.