Chemical enrichment of ICM within the A3266 cluster I: radial profiles
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arXiv
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| Autori principali: | , , , , , , , , , |
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| Natura: | Preprint |
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2025
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| author | Gatuzz, E. Sanders, J. Liu, A. Fabian, A. Pinto, C. Russell, H. Eckert, D. Walker, S. ZuHone, J. Mohapatra, R. |
| author_facet | Gatuzz, E. Sanders, J. Liu, A. Fabian, A. Pinto, C. Russell, H. Eckert, D. Walker, S. ZuHone, J. Mohapatra, R. |
| contents | We present a detailed study of the elemental abundances distribution of the intracluster medium (ICM) within the A3266 cluster using {\it XMM-Newton} observations. This analysis uses EPIC-pn data, including a new energy scale calibration, which allows us to measure velocities with uncertainties down to $Δv \sim 80$ km/s, and MOS observations. We measured radial O, Mg, Si, S, Ar, Ca, and Fe profiles. This is the first study of elemental abundances beyond Fe using X-ray observations within the A3266 cluster. The abundance profiles display discontinuities similar to those obtained for the temperature. We modeled the X/Fe ratio profiles with a linear combination of type~Ia supernovae (SNIa) and core-collapse supernovae (SNcc) models. We found that the SNIa ratio over the total cluster enrichment tends to be uniform, with a $42\pm 5\%$ contribution. Such a trend supports an early ICM enrichment scenario, with most metals produced before clustering. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2504_10588 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Chemical enrichment of ICM within the A3266 cluster I: radial profiles Gatuzz, E. Sanders, J. Liu, A. Fabian, A. Pinto, C. Russell, H. Eckert, D. Walker, S. ZuHone, J. Mohapatra, R. High Energy Astrophysical Phenomena Cosmology and Nongalactic Astrophysics Astrophysics of Galaxies We present a detailed study of the elemental abundances distribution of the intracluster medium (ICM) within the A3266 cluster using {\it XMM-Newton} observations. This analysis uses EPIC-pn data, including a new energy scale calibration, which allows us to measure velocities with uncertainties down to $Δv \sim 80$ km/s, and MOS observations. We measured radial O, Mg, Si, S, Ar, Ca, and Fe profiles. This is the first study of elemental abundances beyond Fe using X-ray observations within the A3266 cluster. The abundance profiles display discontinuities similar to those obtained for the temperature. We modeled the X/Fe ratio profiles with a linear combination of type~Ia supernovae (SNIa) and core-collapse supernovae (SNcc) models. We found that the SNIa ratio over the total cluster enrichment tends to be uniform, with a $42\pm 5\%$ contribution. Such a trend supports an early ICM enrichment scenario, with most metals produced before clustering. |
| title | Chemical enrichment of ICM within the A3266 cluster I: radial profiles |
| topic | High Energy Astrophysical Phenomena Cosmology and Nongalactic Astrophysics Astrophysics of Galaxies |
| url | https://arxiv.org/abs/2504.10588 |