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@article{2360026,
author = {Kara, Sinancan and Plšek, Tomáš and Protušová, Klaudia and Riffald Souza Breuer, JeanandPaul Bernhard and Werner, Norbert and Mernier, François and Ercan, E Nihal},
article_number = {2},
doi = {http://dx.doi.org/10.1093/mnras/stae065},
keywords = {galaxies: abundances; galaxies: active; galaxies: clusters: intracluster medium; galaxies: individual: M89; X-rays: galaxies},
language = {eng},
issn = {0035-8711},
journal = {Monthly Notices of the Royal Astronomical Society},
title = {The infalling elliptical galaxy M89: The chemical composition of the AGN disturbed hot atmosphere},
url = {https://academic.oup.com/mnras/advance-article/doi/10.1093/mnras/stae065/7513768?login=true},
volume = {528},
year = {2024}
}
TY - JOUR
ID - 2360026
AU - Kara, Sinancan - Plšek, Tomáš - Protušová, Klaudia - Riffald Souza Breuer, Jean-Paul Bernhard - Werner, Norbert - Mernier, François - Ercan, E Nihal
PY - 2024
TI - The infalling elliptical galaxy M89: The chemical composition of the AGN disturbed hot atmosphere
JF - Monthly Notices of the Royal Astronomical Society
VL - 528
IS - 2
SP - 1500-1516
EP - 1500-1516
PB - Oxford University Press
SN - 00358711
KW - galaxies: abundances
KW - galaxies: active
KW - galaxies: clusters: intracluster medium
KW - galaxies: individual: M89
KW - X-rays: galaxies
UR - https://academic.oup.com/mnras/advance-article/doi/10.1093/mnras/stae065/7513768?login=true
N2 - 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.
ER -
KARA, Sinancan, Tomáš PLŠEK, Klaudia PROTUŠOVÁ, Jean-Paul Bernhard RIFFALD SOUZA BREUER, Norbert WERNER, Fran$\backslash$c cois MERNIER and E Nihal ERCAN. The infalling elliptical galaxy M89: The chemical composition of the AGN disturbed hot atmosphere. \textit{Monthly Notices of the Royal Astronomical Society}. Oxford University Press, 2024, vol.~528, No~2, p.~1500-1516. ISSN~0035-8711. Available from: https://dx.doi.org/10.1093/mnras/stae065.
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