J 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

References:

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
Name: Zkoumání žhavého vesmíru a porozumění kosmické zpětné vazbě (Acronym: EHU)
Investor: Czech Science Foundation
871158, interní kód MU
Name: Integrated Activities for the High Energy Astrophysics Domain (AHEAD2020) (Acronym: AHEAD2020)
Investor: European Union, Integrated Activities for the High Energy Astrophysics Domain, RI Research Infrastructures (Excellent Science)