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arXiv · 2309.02507

Chemical enrichment of ICM within the Centaurus cluster I: radial profiles

Efrain Gatuzz·J. S. Sanders·K. Dennerl·A. Liu·A. C. Fabian·C. Pinto·D. Eckert·S. A. Walker·J. ZuHone
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Abstract

We examine deep {\it XMM-Newton} EPIC-pn observations of the Centaurus cluster to study the hot intracluster medium (ICM) and radial metal distributions within such an environment. We found that the best-fit spectral model corresponds to a log-normal temperature distribution, with discontinuities around $\sim10$~kpc, $\sim50$~kpc, and $\sim100$~kpc, also observed in the abundances distributions. We measured the radial profiles of O, Si, S, Ar, Ca, and Fe. These profiles reveal prominent negative gradients for distances $<90$~kpc, which then transition to flatter profiles. We modeled X/Fe ratio profiles with a linear combination of SNIcc and SNIa models. The best-fit model suggests a uniform SNIa percentage contribution to the total cluster enrichment, thus supporting an early enrichment of the ICM, with most of the metals present being produced before clustering.

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Efrain Gatuzz, J. S. Sanders, K. Dennerl, A. Liu, A. C. Fabian, C. Pinto, D. Eckert, S. A. Walker, J. ZuHone. 2023-09-05. Chemical enrichment of ICM within the Centaurus cluster I: radial profiles. https://arxiv.org/abs/2309.02507

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