中文
相关论文

相关论文: Co-evolution of the Brightest Cluster Galaxies and…

200 篇论文

We explore the redshift evolution of the dynamical properties of massive clusters and their brightest cluster galaxies (BCGs) at $z < 2$ based on the IllustrisTNG-300 simulation. We select 270 massive clusters with $M_{200} < 10^{14}~{\rm…

宇宙学与河外天体物理 · 物理学 2022-10-26 Jubee Sohn , Margaret J. Geller , Mark Vogelsberger , Josh Borrow

We investigate the formation of brightest cluster galaxies (BCGs) in the TNG300 cosmological simulation of the IllustrisTNG project. Our cluster sample consists of 700 haloes with $M_{200} \geq 5 \times 10^{13} \, \mathrm{M}_{\odot}$ at…

Using the DIANOGA hydrodynamical zoom-in simulation set of galaxy clusters, we analyze the dynamics traced by stars belonging to the Brightest Cluster Galaxies (BCGs) and their surrounding diffuse component, forming the intracluster light…

星系天体物理 · 物理学 2021-09-06 I. Marini , S. Borgani , A. Saro , G. L. Granato , C. Ragone-Figueroa , B. Sartoris , K. Dolag , G. Murante , A. Ragagnin , Y. Wang

We explore connections between brightest cluster galaxies (BCGs) and their host clusters. We first construct a HeCS-omnibus cluster sample including 227 galaxy clusters within $0.02 < z < 0.30$; the total number of spectroscopic members…

星系天体物理 · 物理学 2020-03-18 Jubee Sohn , Margaret J. Geller , Antonaldo Diaferio , Kenneth J. Rines

We analyse spatially-resolved deep optical spectroscopy of Brightest Cluster Galaxies (BCGs) located in 32 massive clusters with redshifts of 0.05 $\leq z \leq$ 0.30, to investigate their velocity dispersion profiles. We compare these…

星系天体物理 · 物理学 2018-03-14 S. I. Loubser , H. Hoekstra , A. Babul , E. O'Sullivan

We derive the central stellar velocity dispersion function for quiescent galaxies in 280 massive clusters with $\log (M_{200} / M_{\odot}) > 14$ in IllustrisTNG300. The velocity dispersion function is an independent tracer of the dark…

星系天体物理 · 物理学 2024-06-03 Jubee Sohn , Margaret J. Geller , Josh Borrow , Mark Vogelsberger

Contradictory results have been reported on the time evolution of the alignment between clusters and their Brightest Cluster Galaxy (BCG). We study this topic by analyzing cosmological hydro-simulations of 24 massive clusters with…

Using a sample of 98 galaxy clusters recently imaged in the near infra-red with the ESO NTT, WIYN and WHT telescopes, supplemented with 33 clusters from the ESO archive, we measure how the stellar mass of the most massive galaxies in the…

The alignment between brightest cluster galaxies (BCGs) and host clusters can reveal the mystery of formation and evolution for galaxy clusters. We measure cluster orientations in optical based on the projected distribution of member…

星系天体物理 · 物理学 2025-09-29 Z. S. Yuan , Z. L. Wen

We examine the central stellar velocity dispersion of subhalos based on IllustrisTNG cosmological hydrodynamic simulations. The central velocity dispersion is a fundamental observable that links galaxies with their dark matter subhalos. We…

星系天体物理 · 物理学 2024-02-23 Jubee Sohn , Margaret J. Geller , Josh Borrow , Mark Vogelsberger

We study the population of galaxies around galaxy clusters in the hydrodynamic simulation suite IllustrisTNG 300-1 to study the signatures of their evolutionary history on observable properties. We measure the radial number density profile,…

宇宙学与河外天体物理 · 物理学 2022-02-23 Tara Dacunha , Matthew Belyakov , Susmita Adhikari , Tae-hyeon Shin , Samuel Goldstein , Bhuvnesh Jain

Hierarchical assembly within clusters of galaxies is tied directly to the evolution of the Brightest Cluster Galaxies (BCGs), which dominate the stellar light in the centres of rich clusters. In this paper we investigate the number of…

宇宙学与河外天体物理 · 物理学 2019-08-19 Claire Burke , Chris A. Collins

The r-band of the Sloan Digital Sky Survey (SDSS) for 17,924 brightest cluster galaxies (BCGs) in clusters and groups within 0.02 z 0.20 are used to study possible environmental relations affecting the nature of these galaxies. We find a…

星系天体物理 · 物理学 2021-06-25 R. M. Samir , A. A. Shaker

We use the Sloan Digital Sky Survey to construct a sample of 625 brightest group and cluster galaxies (BCGs) together with control samples of non-BCGs matched in stellar mass, redshift, and color. We investigate how the systematic…

天体物理学 · 物理学 2008-11-26 Anja von der Linden , Philip N. Best , Guinevere Kauffmann , Simon D. M. White

Context. This is the second work dedicated to the observed parallelism between galaxy clusters and early-type galaxies. The focus is on the distribution of these systems in the scaling relations (SRs) observed when effective radii,…

星系天体物理 · 物理学 2020-06-30 Mauro D'Onofrio , Cesare Chiosi , Mauro Sciarratta , Paola Marziani

We analyze the stellar growth of Brightest Cluster Galaxies (BCGs) produced by cosmological zoom-in hydrodynamical simulations of the formation of massive galaxy clusters. The evolution of the stellar mass content is studied considering…

星系天体物理 · 物理学 2018-07-18 C. Ragone-Figueroa , G. L. Granato , M. E. Ferraro , G. Murante , V. Biffi , S. Borgani , S. Planelles , E. Rasia

We apply a friends-of-friends (FoF) algorithm to identify galaxy clusters and we use the catalog to explore the evolutionary synergy between BCGs and their host clusters. We base the cluster catalog on the dense HectoMAP redshift survey…

宇宙学与河外天体物理 · 物理学 2021-12-22 Jubee Sohn , Margaret J. Geller , Ho Seong Hwang , Antonaldo Diaferio , Kenneth J. Rines , Yousuke Utsumi

We use the L-GALAXIES semi-analytic model to investigate the evolution of Brightest Cluster Galaxies (BCGs) found in clusters at $\rm z \sim 0$. BCGs are typically located in the central region of galaxy clusters, near the bottom of the…

One of the most vital observational clues for unraveling the origin of Brightest Cluster Galaxies (BCG) is the observed alignment of the BCGs with their host cluster and its surroundings. We have examined the BCG-cluster alignment effect,…

‹ 上一页 1 2 3 10 下一页 ›