The chemical enrichment of the Universe at all scales is related to stellarwinds and explosive supernovae phenomena. Metals produced by stars and laterspread at the mega-parsec scale through the intra-cluster medium (ICM) become afossil record of the chemical enrichment of the Universe and of the dynamicaland feedback mechanisms determining their circulation. As demonstrated by theresults of the soft X-ray spectrometer onboard Hitomi, high resolution X-rayspectroscopy is the path to to differentiate among the models that considerdifferent metal production mechanisms, predict the outcoming yields, and arefunction of the nature, mass, and/or initial metallicity of their stellarprogenitor. Transformational results shall be achieved through improvements inthe energy resolution and effective area of X-ray observatories to detect raremetals (e.g. Na, Al) and constrain yet uncertain abundances (e.g. C, Ne, Ca,Ni). The X-ray Integral Field Unit (X-IFU) instrument onboard thenext-generation European X-ray observatory Athena is expected to deliver suchbreakthroughs. Starting from 100 ks of synthetic observations of 12 abundanceratios in the ICM of four simulated clusters, we demonstrate that the X-IFUwill be capable of recovering the input chemical enrichment models at both low($z = 0.1$) and high ($z = 1$) redshifts, while statistically excluding morethan 99.5% of all the other tested combinations of models. By fixing theenrichment models which provide the best fit to the simulated data, we alsoshow that the X-IFU will constrain the slope of the stellar initial massfunction within $\sim$12%. These constraints will be key ingredients in ourunderstanding of the chemical enrichment of the Universe and its evolution.

Constraining the origin and models of chemical enrichment in galaxy clusters using the Athena X-IFU / Mernier, F.; Cucchetti, E.; Tornatore, L.; Biffi, V.; Pointecouteau, E.; Clerc, N.; Peille, P.; Rasia, E.; Barret, D.; Borgani, Stefano; Bulbul, E.; Dauser, T.; Dolag, K.; Ettori, Stefano; Gaspari, M.; Pajot, F.; Roncarelli, M.; Wilms, J.; Noûs, C.. - In: ASTRONOMY & ASTROPHYSICS. - ISSN 0004-6361. - 642:(2020), p. A90. [10.1051/0004-6361/202038638]

Constraining the origin and models of chemical enrichment in galaxy clusters using the Athena X-IFU

Gaspari, M.;
2020

Abstract

The chemical enrichment of the Universe at all scales is related to stellarwinds and explosive supernovae phenomena. Metals produced by stars and laterspread at the mega-parsec scale through the intra-cluster medium (ICM) become afossil record of the chemical enrichment of the Universe and of the dynamicaland feedback mechanisms determining their circulation. As demonstrated by theresults of the soft X-ray spectrometer onboard Hitomi, high resolution X-rayspectroscopy is the path to to differentiate among the models that considerdifferent metal production mechanisms, predict the outcoming yields, and arefunction of the nature, mass, and/or initial metallicity of their stellarprogenitor. Transformational results shall be achieved through improvements inthe energy resolution and effective area of X-ray observatories to detect raremetals (e.g. Na, Al) and constrain yet uncertain abundances (e.g. C, Ne, Ca,Ni). The X-ray Integral Field Unit (X-IFU) instrument onboard thenext-generation European X-ray observatory Athena is expected to deliver suchbreakthroughs. Starting from 100 ks of synthetic observations of 12 abundanceratios in the ICM of four simulated clusters, we demonstrate that the X-IFUwill be capable of recovering the input chemical enrichment models at both low($z = 0.1$) and high ($z = 1$) redshifts, while statistically excluding morethan 99.5% of all the other tested combinations of models. By fixing theenrichment models which provide the best fit to the simulated data, we alsoshow that the X-IFU will constrain the slope of the stellar initial massfunction within $\sim$12%. These constraints will be key ingredients in ourunderstanding of the chemical enrichment of the Universe and its evolution.
2020
642
A90
Constraining the origin and models of chemical enrichment in galaxy clusters using the Athena X-IFU / Mernier, F.; Cucchetti, E.; Tornatore, L.; Biffi, V.; Pointecouteau, E.; Clerc, N.; Peille, P.; Rasia, E.; Barret, D.; Borgani, Stefano; Bulbul, E.; Dauser, T.; Dolag, K.; Ettori, Stefano; Gaspari, M.; Pajot, F.; Roncarelli, M.; Wilms, J.; Noûs, C.. - In: ASTRONOMY & ASTROPHYSICS. - ISSN 0004-6361. - 642:(2020), p. A90. [10.1051/0004-6361/202038638]
Mernier, F.; Cucchetti, E.; Tornatore, L.; Biffi, V.; Pointecouteau, E.; Clerc, N.; Peille, P.; Rasia, E.; Barret, D.; Borgani, Stefano; Bulbul, E.; Dauser, T.; Dolag, K.; Ettori, Stefano; Gaspari, M.; Pajot, F.; Roncarelli, M.; Wilms, J.; Noûs, C.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11380/1338420
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