Detailed Information on Publication Record
2024
The infalling elliptical galaxy M89: The chemical composition of the AGN disturbed hot atmosphere
KARA, Sinancan, Tomáš PLŠEK, Klaudia PROTUŠOVÁ, Jean-Paul Bernhard RIFFALD SOUZA BREUER, Norbert WERNER et. al.Basic information
Original name
The infalling elliptical galaxy M89: The chemical composition of the AGN disturbed hot atmosphere
Authors
KARA, Sinancan, Tomáš PLŠEK (203 Czech Republic, belonging to the institution), Klaudia PROTUŠOVÁ (703 Slovakia, belonging to the institution), Jean-Paul Bernhard RIFFALD SOUZA BREUER (76 Brazil, belonging to the institution), Norbert WERNER (703 Slovakia, belonging to the institution), François MERNIER and E Nihal ERCAN
Edition
Monthly Notices of the Royal Astronomical Society, Oxford University Press, 2024, 0035-8711
Other information
Language
English
Type of outcome
Článek v odborném periodiku
Field of Study
10308 Astronomy
Country of publisher
United Kingdom of Great Britain and Northern Ireland
Confidentiality degree
není předmětem státního či obchodního tajemství
Impact factor
Impact factor: 4.800 in 2022
Organization unit
Faculty of Science
UT WoS
001153798300043
Keywords in English
galaxies: abundances; galaxies: active; galaxies: clusters: intracluster medium; galaxies: individual: M89; X-rays: galaxies
Tags
Tags
International impact, Reviewed
Změněno: 3/5/2024 10:12, Mgr. Marie Šípková, DiS.
Abstract
V originále
The chemical enrichment of X-ray-emitting hot atmospheres has hitherto been primarily studied in galaxy clusters. These studies revealed relative abundances of heavy elements that are remarkably similar to Solar. Here, we present measurements of the metal content of M89 (NGC 4552), an elliptical galaxy infalling into the Virgo cluster with a ∼10 kpc ram-pressure stripped X-ray tail. We take advantage of deep Chandra and XMM-Newton observations, and with particular attention to carefully modelling the spectra, we measure the O/Fe, Ne/Fe, Mg/Fe, Si/Fe and S/Fe ratios. Contrary to previous measurements in galaxy clusters, our results for the hot atmosphere of M89 suggest super-Solar abundance ratios with respect to iron (i.e. α/Fe \\> 1), similar to its stellar components. Our analysis of the active galactic nucleus (AGN) activity in this system indicates that the AGN-induced outflow could have facilitated the stripping of the original galactic atmosphere, which has been replaced with fresh stellar mass loss material with super-Solar α/Fe abundance ratios. Additionally, we report a new fitting bias in the RGS data of low-temperature plasma. The measured O/Fe ratios are \\>1σ lower in multi-temperature models than a single temperature fit, leading to discrepancies in the calculations of supernova fractions derived from the metal abundances.
Links
| GX21-13491X, research and development project |
| ||
| 871158, interní kód MU |
|