| TRUONG, N., E. RASIA, V. BIFFI, F. MERNIER, Norbert WERNER, M. GASPARI, S. BORGANI, S. PLANELLES, D. FABJAN a G. MURANTE. Mass-metallicity relation from cosmological hydrodynamical simulations and X-ray observations of galaxy groups and clusters. Monthly Notices of the Royal Astronomical Society. Oxford: OXFORD UNIV PRESS, 2019, roč. 484, č. 2, s. 2896-2913. ISSN 0035-8711. Dostupné z: https://dx.doi.org/10.1093/mnras/stz161. |
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@article{1523376,
author = {Truong, N. and Rasia, E. and Biffi, V. and Mernier, F. and Werner, Norbert and Gaspari, M. and Borgani, S. and Planelles, S. and Fabjan, D. and Murante, G.},
article_location = {Oxford},
article_number = {2},
doi = {http://dx.doi.org/10.1093/mnras/stz161},
keywords = {methods: numerical; galaxies: clusters: general; galaxies: clusters: intracluster medium; X-rays: galaxies: clusters},
language = {eng},
issn = {0035-8711},
journal = {Monthly Notices of the Royal Astronomical Society},
title = {Mass-metallicity relation from cosmological hydrodynamical simulations and X-ray observations of galaxy groups and clusters},
url = {https://arxiv.org/pdf/1803.06297.pdf},
volume = {484},
year = {2019}
}
TY - JOUR
ID - 1523376
AU - Truong, N. - Rasia, E. - Biffi, V. - Mernier, F. - Werner, Norbert - Gaspari, M. - Borgani, S. - Planelles, S. - Fabjan, D. - Murante, G.
PY - 2019
TI - Mass-metallicity relation from cosmological hydrodynamical simulations and X-ray observations of galaxy groups and clusters
JF - Monthly Notices of the Royal Astronomical Society
VL - 484
IS - 2
SP - 2896-2913
EP - 2896-2913
PB - OXFORD UNIV PRESS
SN - 00358711
KW - methods: numerical
KW - galaxies: clusters: general
KW - galaxies: clusters: intracluster medium
KW - X-rays: galaxies: clusters
UR - https://arxiv.org/pdf/1803.06297.pdf
N2 - Recent X-ray observations of galaxy clusters show that the distribution of intra-cluster medium (ICM) metallicity is remarkably uniform in space and time. In this paper, we analyse a large sample of simulated objects, from poor groups to rich clusters, to study the dependence of the metallicity and related quantities on the mass of the systems. The simulations are performed with an improved version of the smoothed-particle-hydrodynamic GADGET-3 code and consider various astrophysical processes including radiative cooling, metal enrichment and feedback from stars and active galactic nuclei (AGNs). The scaling between the metallicity and the temperature obtained in the simulations agrees well in trend and evolution with the observational results obtained from two data samples characterized by a wide range of masses and a large redshift coverage. We find that the iron abundance in the cluster core (r < 0.1R(500)) does not correlate with the temperature nor presents a significant evolution. The scale invariance is confirmed when the metallicity is related directly to the total mass. The slope of the best-fitting relations is shallow (beta similar to -0.1) in the innermost regions (r < 0.5R(500)) and consistent with zero outside. We investigate the impact of the AGN feedback and find that it plays a key role in producing a constant value of the outskirts metallicity from groups to clusters. This finding additionally supports the picture of early enrichment.
ER -
TRUONG, N., E. RASIA, V. BIFFI, F. MERNIER, Norbert WERNER, M. GASPARI, S. BORGANI, S. PLANELLES, D. FABJAN a G. MURANTE. Mass-metallicity relation from cosmological hydrodynamical simulations and X-ray observations of galaxy groups and clusters. \textit{Monthly Notices of the Royal Astronomical Society}. Oxford: OXFORD UNIV PRESS, 2019, roč.~484, č.~2, s.~2896-2913. ISSN~0035-8711. Dostupné z: https://dx.doi.org/10.1093/mnras/stz161.
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