| Online-Ressource |
Verfasst von: | Vogelsberger, Mark [VerfasserIn]  |
| Marinacci, Federico [VerfasserIn]  |
| Torrey, Paul [VerfasserIn]  |
| Genel, Shy [VerfasserIn]  |
| Springel, Volker [VerfasserIn]  |
| Weinberger, Rainer [VerfasserIn]  |
| Pakmor, Rüdiger [VerfasserIn]  |
| Hernquist, Lars [VerfasserIn]  |
| Naiman, Jill P. [VerfasserIn]  |
| Pillepich, Annalisa [VerfasserIn]  |
| Nelson, Dylan [VerfasserIn]  |
Titel: | The uniformity and time-invariance of the intra-cluster metal distribution in galaxy clusters from the IllustrisTNG simulations |
Verf.angabe: | Mark Vogelsberger, Federico Marinacci, Paul Torrey, Shy Genel, Volker Springel, Rainer Weinberger, Rüdiger Pakmor, Lars Hernquist, Jill Naiman, Annalisa Pillepich and Dylan Nelson |
Jahr: | 2018 |
Umfang: | 21 S. |
Fussnoten: | Advance access publication 2017 November 17 ; Gesehen am 11.11.2022 |
Titel Quelle: | Enthalten in: Royal Astronomical SocietyMonthly notices of the Royal Astronomical Society |
Ort Quelle: | Oxford : Oxford Univ. Press, 1827 |
Jahr Quelle: | 2018 |
Band/Heft Quelle: | 474(2018), 2, Seite 2073-2093 |
ISSN Quelle: | 1365-2966 |
Abstract: | The distribution of metals in the intra-cluster medium (ICM) encodes important information about the enrichment history and ormation of galaxy clusters. Here, we explore the metal content of clusters in IllustrisTNG - a new suite of galaxy formation simulations building on the Illustris project. Our cluster sample contains 20 objects in TNG100 - a ∼(100 Mpc)3 volume simulation with 2 × 18203 resolution elements, and 370 objects in TNG300 - a ∼(300 Mpc)3 volume simulation with 2 × 25003 resolution elements. The z = 0 metallicity profiles agree with observations, and the enrichment history is consistent with observational data going beyond z ∼ 1, showing nearly no metallicity evolution. The abundance profiles vary only minimally within the cluster samples, especially in the outskirts with a relative scatter of ∼ 15 per cent. The average metallicity profile flattens towards the centre, where we find a logarithmic slope of −0.1 compared to −0.5 in the outskirts. Cool core clusters have more centrally peaked metallicity profiles (∼0.8 solar) compared to non-cool core systems (∼0.5 solar), similar to observational trends. Si/Fe and O/Fe radial profiles follow positive gradients. The outer abundance profiles do not evolve below z ∼ 2, whereas the inner profiles flatten towards z = 0. More than ∼ 80 per cent of the metals in the ICM have been accreted from the proto-cluster environment, which has been enriched to ∼0.1 solar already at z ∼ 2. We conclude that the intra-cluster metal distribution is uniform among our cluster sample, nearly time-invariant in the outskirts for more than 10 Gyr, and forms through a universal enrichment history. |
DOI: | doi:10.1093/mnras/stx2955 |
URL: | Bitte beachten Sie: Dies ist ein Bibliographieeintrag. Ein Volltextzugriff für Mitglieder der Universität besteht hier nur, falls für die entsprechende Zeitschrift/den entsprechenden Sammelband ein Abonnement besteht oder es sich um einen OpenAccess-Titel handelt.
kostenfrei: Volltext: http://dx.doi.org/10.1093/mnras/stx2955 |
| kostenfrei: Volltext: https://academic.oup.com/mnras/article/474/2/2073/4638539 |
| DOI: https://doi.org/10.1093/mnras/stx2955 |
Datenträger: | Online-Ressource |
Sprache: | eng |
K10plus-PPN: | 1571274782 |
Verknüpfungen: | → Zeitschrift |
¬The¬ uniformity and time-invariance of the intra-cluster metal distribution in galaxy clusters from the IllustrisTNG simulations / Vogelsberger, Mark [VerfasserIn]; 2018 (Online-Ressource)