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.Základní údaje
Originální název
The infalling elliptical galaxy M89: The chemical composition of the AGN disturbed hot atmosphere
Autoři
KARA, Sinancan, Tomáš PLŠEK (203 Česká republika, domácí), Klaudia PROTUŠOVÁ (703 Slovensko, domácí), Jean-Paul Bernhard RIFFALD SOUZA BREUER (76 Brazílie, domácí), Norbert WERNER (703 Slovensko, domácí), François MERNIER a E Nihal ERCAN
Vydání
Monthly Notices of the Royal Astronomical Society, Oxford University Press, 2024, 0035-8711
Další údaje
Jazyk
angličtina
Typ výsledku
Článek v odborném periodiku
Obor
10308 Astronomy
Stát vydavatele
Velká Británie a Severní Irsko
Utajení
není předmětem státního či obchodního tajemství
Impakt faktor
Impact factor: 4.800 v roce 2022
Organizační jednotka
Přírodovědecká fakulta
UT WoS
001153798300043
Klíčová slova anglicky
galaxies: abundances; galaxies: active; galaxies: clusters: intracluster medium; galaxies: individual: M89; X-rays: galaxies
Štítky
Příznaky
Mezinárodní význam, Recenzováno
Změněno: 3. 5. 2024 10:12, Mgr. Marie Šípková, DiS.
Anotace
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.
Návaznosti
GX21-13491X, projekt VaV |
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871158, interní kód MU |
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