Iron in X-COP: Tracing enrichment in cluster outskirts with high accuracy abundance profiles

  title={Iron in X-COP: Tracing enrichment in cluster outskirts with high accuracy abundance profiles},
  author={Simona Ghizzardi and Silvano Molendi and Remco F. J. van der Burg and Sabrina De Grandi and Iacopo Bartalucci and Fabio Gastaldello and Mariachiara Rossetti and Veronica Biffi and Stefano Borgani and Dominique Eckert and Stefano Ettori and Massimo Gaspari and Vittorio Ghirardini and Elena Rasia},
  journal={Astronomy \& Astrophysics},
We present the first metal abundance profiles for a representative sample of massive clusters. Our measurements extend to R500 and are corrected for a systematic error plaguing previous outskirt estimates. Our profiles flatten out at large radii, admittedly not a new result, however the radial range and representative nature of our sample extends its import well beyond previous findings. We find no evidence of segregation between cool-core and non-cool-core systems beyond ∼0.3 R500, implying… 
A deep learning view of the census of galaxy clusters in IllustrisTNG
The origin of the diverse population of galaxy clusters remains an unexplained aspect of large-scale structure formation and cluster evolution. We present a novel method of using X-ray images to
Chemical evolution of galaxies with an environment-dependent stellar initial mass function
of the doctoral thesis Chemical evolution of galaxies with an environment-dependent stellar initial mass function
ESO Staff Publications (2021)
  • Physics
  • 2022
The ESO Library maintains the ESO Telescope Bibliography (telbib) and is responsible for providing paper-based statistics. Publications in refereed journals based on ESO data (2021) can be retrieved
Chemical enrichment in groups and clusters
As building blocks of dust, rocky planets, and even complex life, the chemical elements heavier than hydrogen (H) and helium (He) – called ”metals” in astronomy – play an essential role in our
The history of metal enrichment traced by X-ray observations of high-redshift galaxy clusters
We present the analysis of deep X-ray observations of 10 massive galaxy clusters at redshifts 1.05 < z < 1.71, with the primary goal of measuring the metallicity of the intracluster medium (ICM) at
Systematic Perturbations of the Thermodynamic Properties in Cool Cores of HIFLUGCS Galaxy Clusters
We present an ensemble X-ray analysis of systematic perturbations in the central hot gas properties for a sample of 28 nearby strong cool-core systems, selected from the HIghest X-ray FLUx Galaxy
Review of the Particle Background of the Athena X-IFU Instrument
X-ray observations are limited by the background, due to the intrinsic faintness or diffuse nature of the sources. The future Athena X-ray observatory has among its goals the characterization of
The Cluster HEritage project with XMM-Newton: Mass Assembly and Thermodynamics at the Endpoint of structure formation
The Cluster HEritage project with XMM-Newton – Mass Assembly and Thermodynamics at the Endpoint of structure formation (CHEX-MATE) is a three-mega-second Multi-Year Heritage Programme to obtain X-ray
The delay time distribution of Type-Ia supernovae in galaxy clusters: the impact of extended star-formation histories
The delay time distribution (DTD) of Type-Ia supernovae (SNe Ia) is the rate of SNe Ia, as a function of time, that explode in a hypothetical stellar population of unit mass, formed in a brief burst


The Hot and Energetic Universe: A White Paper presenting the science theme motivating the Athena+ mission
This White Paper, submitted to the recent ESA call for science themes to define its future large missions, advocates the need for a transformational leap in our understanding of two key questions in
The Hot Universe with XRISM and Athena
Abstract X-ray spectroscopy is key to address the theme of “The Hot Universe”, the still poorly understood astrophysical processes driving the cosmological evolution of the baryonic hot gas traceable
The X-ray Integral Field Unit (X-IFU) for Athena
Athena is designed to implement the Hot and Energetic Universe science theme selected by the European Space Agency for the second large mission of its Cosmic Vision program. The Athena science
An analytic expression for the luminosity function for galaxies
A new analytic approximation for the luminosity function for galaxies is proposed, which shows good agreement with both a luminosity distribution for bright nearby galaxies and a composite luminosity
On the variation of the initial mass function
A universal initial mass function (IMF) is not intuitive, but so far no convincing evidence for a variable IMF exists. The detection of systematic variations of the IMF with star-forming conditions
Galactic Stellar and Substellar Initial Mass Function
We review recent determinations of the present‐day mass function (PDMF) and initial mass function (IMF) in various components of the Galaxy—disk, spheroid, young, and globular clusters—and in
The stellar-to-halo mass relation over the past 12 Gyr
Aims. Understanding the link between the galaxy properties and the dark matter halos they reside in and their coevolution is a powerful tool for constraining the processes related to galaxy
Iron abundance distribution in the hot gas of merging galaxy clusters
We present XMM-Newton/EPIC observations of six merging galaxy clusters and study the distributions of their temperature, iron (Fe) abundance and pseudo-entropy along the merging axis. For the first
Polytropic state of the intracluster medium in the X-COP cluster sample
Aims. In this work, we have investigated the relation between the radially resolved thermodynamic quantities of the intracluster medium in the X-COP cluster sample, aiming to assess the
The X-ray emitting gas in poor clusters with central dominant galaxies
The 12 clusters detected in the present study by the Einstein Observatory's X-ray imaging proportional counter show X-ray emission centered on the dominant galaxy in all cases. Comparison of the