2022
Detection of a Superluminous Spiral Galaxy in the Heart of a Massive Galaxy Cluster
BOGDÁN, Ákos, Lorenzo LOVISARI, Patrick OGLE, Orsolya Eszter KOVÁCS, Thomas JARRETT et. al.Základní údaje
Originální název
Detection of a Superluminous Spiral Galaxy in the Heart of a Massive Galaxy Cluster
Autoři
BOGDÁN, Ákos (garant), Lorenzo LOVISARI, Patrick OGLE, Orsolya Eszter KOVÁCS (348 Maďarsko, domácí), Thomas JARRETT, Christine JONES, William R. FORMAN a Lauranne LANZ
Vydání
The Astrophysical Journal, American Astronomical Society, 2022, 0004-637X
Další údaje
Jazyk
angličtina
Typ výsledku
Článek v odborném periodiku
Obor
10308 Astronomy
Stát vydavatele
Spojené státy
Utajení
není předmětem státního či obchodního tajemství
Impakt faktor
Impact factor: 4.900
Kód RIV
RIV/00216224:14310/22:00125893
Organizační jednotka
Přírodovědecká fakulta
UT WoS
000794031200001
Klíčová slova anglicky
Brightest cluster galaxies; Giant galaxies; X-ray astronomy; Intracluster medium; High energy astrophysics; Spiral galaxies; Galaxy clusters; Galactic and extragalactic astronomy; Extragalactic astronomy
Štítky
Příznaky
Mezinárodní význam, Recenzováno
Změněno: 9. 1. 2023 10:23, Mgr. Marie Šípková, DiS.
Anotace
V originále
It is well established that brightest cluster galaxies (BCGs), residing in the centers of galaxy clusters, are typically massive and quenched galaxies with cD or elliptical morphology. An optical survey suggested that an exotic galaxy population, superluminous spiral and lenticular galaxies, could be the BCGs of some galaxy clusters. Because the cluster membership and the centroid of a cluster cannot be accurately determined based solely on optical data, we followed up a sample of superluminous disk galaxies and their environments using XMM-Newton X-ray observations. Specifically, we explored seven superluminous spiral and lenticular galaxies that are candidate BCGs. We detected massive galaxy clusters around five superluminous disk galaxies and established that one superluminous spiral, 2MASX J16273931+3002239, is the central BCG of a galaxy cluster. The temperature and total mass of the cluster are ${{kT}}_{500}={3.55}_{-0.20}^{+0.18}$ keV and M500 = (2.39 ± 0.19) × 1014 M⊙. We identified the central galaxies of the four clusters that do not host superluminous disk galaxies at their cores, and established that the centrals are massive elliptical galaxies. However, for two of the clusters, the offset superluminous spirals are brighter than the central galaxies, implying that the superluminous disk galaxies are the brightest cluster galaxies. Our results demonstrate that superluminous disk galaxies are rarely the central systems of galaxy clusters. This is likely because galactic disks are destroyed by major mergers, which are more frequent in high-density environments. We speculate that the disks of superluminous disk galaxies in cluster cores may have been reformed due to mergers with gas-rich satellites.
Návaznosti
GX21-13491X, projekt VaV |
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