Results 131 to 140 of about 87,085 (268)

Correlations in Relaxed Clusters of Galaxies

Open Astronomy, 2014
The correlations among different quantities in galaxy clusters, observed by Newman et al. (2013a,b), are investigated. We find an anti-correlation among the slope α, the effective radius, Re, and a correlation among the core radius rcore and Re. Moreover,
Babyk Iu., Del Popolo A.
doaj   +1 more source

An infrared survey of brightest cluster galaxies: Paper I

, 2007
We report on an imaging survey with the Spitzer Space Telescope of 62 brightest cluster galaxies with optical line emission. These galaxies are located in the cores of X-ray luminous clusters selected from the ROSAT All-Sky Survey.
Alastair Edge, Alice C. Quillen, Allen S. W., Andy Fabian, Brian R. McNamara, Brinkmann W., Christopher P. O’Dea, Craig L. Sarazin, Edge A. C., Edge A. C., Fabian A. C., George Privon, Helen Russell, Jacob Noel‐Storr, Jaehong Park, Joel N. Bregman, Jones D. H., Megan Donahue, Nicholas Zufelt, Stefi A. Baum   +19 more
core   +1 more source

Surface photometry of brightest cluster galaxies and intracluster stars in ΛCDM

, 2015
We simulate the phase-space distribution of stellar mass in nine massive Λ cold dark matter galaxy clusters by applying the semi-analytic particle tagging method of Cooper et al. to the Phoenix suite of high-resolution N-body simulations (M200 ≈ 7.5–33 ×
A. Cooper, Liang Gao, Q. Guo, C. Frenk, A. Jenkins, V. Springel, S. White   +6 more
semanticscholar   +1 more source

Missing black holes in brightest cluster galaxies as evidence for the occurrence of superkicks in nature [PDF]

, 2014
We investigate the consequences of superkicks on the population of supermassive black holes (SMBHs) in the Universe residing in brightest cluster galaxies (BCGs).
D. Gerosa, A. Sesana
semanticscholar   +1 more source

The Relationships between Active Galactic Nucleus Power and Molecular Gas Mass within 500 pc of the Center of Elliptical Galaxies

The Astrophysical Journal
The physical quantity that directly controls the feedback of active galactic nuclei (AGNs) in elliptical galaxies remains to be determined. The discovery of molecular gas around the AGNs suggests that the gas is fueling the AGNs.
Yutaka Fujita, Takuma Izumi, Hiroshi Nagai, Nozomu Kawakatu, Norita Kawanaka   +4 more
doaj   +1 more source

COSMIC: A Galaxy Cluster–Finding Algorithm Using Machine Learning

The Astrophysical Journal Supplement Series
Building a comprehensive catalog of galaxy clusters is a fundamental task for studies on structure formation and galaxy evolution. In this paper, we present Cluster Optical Search using Machine Intelligence in Catalogs (COSMIC), an algorithm utilizing ...
Da-Chuan Tian, Yang Yang, Zhong-Lue Wen, Jun-Qing Xia   +3 more
doaj   +1 more source

Precision MARS Mass Reconstruction of A2744: Synergizing the Largest Strong-lensing and Densest Weak-lensing Data Sets from JWST

The Astrophysical Journal
We present a new high-resolution free-form mass model of A2744 that combines both weak-lensing (WL) and strong-lensing (SL) data sets from JWST. The SL data set comprises 286 multiple images, presenting the most extensive SL constraint to date for a ...
Sangjun Cha, Kim HyeongHan, Zachary P. Scofield, Hyungjin Joo, M. James Jee   +4 more
doaj   +1 more source

Star Formation, Nebulae, and Active Galactic Nuclei in CLASH Brightest Cluster Galaxies. I. Dependence on Core Entropy of Intracluster Medium

The Astrophysical Journal
We set the stage for reassessing how star formation, emission-line nebulae, and active galactic nuclei (AGNs) in brightest cluster galaxies (BCGs) depend on the thermodynamics of the intracluster medium (ICM).
Arsen Levitskiy, Jeremy Lim, Youichi Ohyama, Juno Li, Megan Donahue   +4 more
doaj   +1 more source

The Growth in Size and Mass of Cluster Galaxies since z=2

, 2013
We study the formation and evolution of Brightest Cluster Galaxies starting from a $z=2$ population of quiescent ellipticals and following them to $z=0$.
Gao, Liang, Laporte, Chervin F. P., Naab, Thorsten, White, Simon D. M.   +3 more
core   +1 more source

Alignment Effects of Brightest Cluster Galaxies [PDF]

, 1988
D. G. Lambas, P. J. E. Peebles, E. J. Groth   +2 more
openalex   +1 more source