Results 161 to 170 of about 89,392 (297)

Radio Galaxy Zoo: The Distortion of Radio Galaxies by Galaxy Clusters

, 2019
We study the impact of cluster environment on the morphology of a sample of 4304 extended radio galaxies from Radio Galaxy Zoo. A total of 87% of the sample lies within a projected 15 Mpc of an optically identified cluster.
Andernach, Heinz, de Gasperin, Francesco, Garon, Avery F., Jones, Tom W., Kapińska, Anna D., Kim, Jin-Ah, Norris, Ray P., Rudnick, Lawrence, Shabala, Stanislav S., Tang, Hongming, Tate, Jean, Wong, O. Ivy   +11 more
core   +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

The transformation of Spirals into S0 galaxies in the cluster environment

Frontiers in Astronomy and Space Sciences, 2015
We discuss the observational evidences of the morphological transformation of Spirals into S0 galaxies in the cluster environment exploiting two big databases of galaxy clusters: WINGS (0 ...
Mauro eD'onofrio, Paola eMarziani, Lucio eBuson   +2 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

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

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

Kinematics, abundances and origin of brightest cluster galaxies

Monthly Notices of the Royal Astronomical Society, 1999
21 pages, accepted for publication in ...
Carter, D, Bridges, TJ, Hau, GKT
openaire   +2 more sources

Major Mergers Mean Major Offset: Drivers of Intrinsic Scatter in the MGCS–Mh Scaling Relation for Massive Elliptical Galaxies

The Astrophysical Journal
In this work, we determine the total globular cluster (GC) counts and globular cluster system (GCS) total mass estimates for 27 extremely massive elliptical galaxies.
Veronika Dornan, William E. Harris
doaj   +1 more source

A New Test of the Statistical Nature of the Brightest Cluster Galaxies

, 2010
A novel statistic is proposed to examine the hypothesis that all cluster galaxies are drawn from the same luminosity distribution (LD). In such a "statistical model" of galaxy LD, the brightest cluster galaxies (BCGs) are simply the statistical extreme ...
Abazajian, Adelman-McCarthy, Bernardi, Bhavsar, Blanton, Christopher J. Miller, Cooray, Dubinski, Eisenstein, Eisenstein, Gonzalez, Graham, Hansen, Jeremiah P. Ostriker, Koester, La Barbera, Lauer, Lin, Lin, Miller, Milosavljević, Spergel, Strateva, Strauss, Tonry, Voevodkin, Yang, Yen-Ting Lin, York, Zheng   +29 more
core   +1 more source

The Manhattan Suite: Accelerated Galaxy Evolution in the Early Universe

The Astrophysical Journal
Observational advances have allowed the detection of galaxies, protoclusters, and galaxy clusters at higher and higher redshifts, opening a new view into extreme galaxy evolution.
Douglas Rennehan
doaj   +1 more source