J 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

Odkazy

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
Název: Zkoumání žhavého vesmíru a porozumění kosmické zpětné vazbě (Akronym: EHU)
Investor: Grantová agentura ČR, Exploring the Hot Universe and Understanding Comic Feedback