Results 81 to 90 of about 5,809 (203)

Active Galactic Nucleus Properties of ∼1 Million Member Galaxies of Galaxy Groups and Clusters at z < 1.4 Based on the Subaru Hyper Suprime-Cam Survey

The Astrophysical Journal
Herein, we present the statistical properties of active galactic nuclei (AGNs) for approximately 1 million member galaxies of galaxy groups and clusters with 0.1 < cluster redshift ( z _cl ) < 1.4 selected using the Subaru Hyper Suprime-Cam, the so ...
Yoshiki Toba, Aoi Hashiguchi, Naomi Ota, Masamune Oguri, Nobuhiro Okabe, Yoshihiro Ueda, Masatoshi Imanishi, Atsushi J. Nishizawa, Tomotsugu Goto, Bau-Ching Hsieh, Marie Kondo, Shuhei Koyama, Kianhong Lee, Ikuyuki Mitsuishi, Tohru Nagao, Taira Oogi, Koki Sakuta, Malte Schramm, Anri Yanagawa, Anje Yoshimoto   +19 more
doaj   +1 more source

Extended Radio Emission in the Perhipheral Regions of the Shapley Concentration Core

Galaxies, 2017
The Shapley Concentration (SC) is a galaxy supercluster (few tens of degrees) in the Local Universe (<z>∼0.048) which is currently undergoing cluster mergers and group accretion.
Tiziana Venturi, Sandro Bardelli, Daniele Dallacasa, Gabriella Di Gennaro, Fabio Gastaldello, Simona Giacintucci, Mariachiara Rossetti   +6 more
doaj   +1 more source

Nature's Complexity Alive: Farewell to Several Unificatory Cosmological Arguments for Monism

Noûs, EarlyView.
ABSTRACT Throughout history, numerous thinkers have claimed that monism—in the form of priority monism, existence monism, monotheistic monism, or versions that posit an extra‐cosmic ultimate being—theoretically surpasses pluralism, above all by positing a unified universe.
Lok‐Chi Chan
wiley   +1 more source

Details of the Spatial Structure and Kinematics of the Castor and Ursa Major Streams

Open Astronomy, 2015
A list of the Castor stream members is compiled based on the data from various authors. The membership probabilities for some stars are revised based on the individual apex, multiplicity, observational errors, and peculiarity.
Vereshchagin S. V., Chupina N. V.
doaj   +1 more source

The Outer Halos of Very Massive Galaxies: BCGs and their DSC in the Magneticum Simulations

Galaxies, 2017
Recent hydrodynamic cosmological simulations cover volumes up to Gpc 3 and resolve halos across a wide range of masses and environments, from massive galaxy clusters down to normal galaxies, while following a large variety of physical processes ...
Rhea-Silvia Remus, Klaus Dolag, Tadziu L. Hoffmann   +2 more
doaj   +1 more source

How Many Worlds Could There Be? David Lewis and Advanced Modalizing

Analytic Philosophy, EarlyView.
ABSTRACT Advanced modalizing, namely, possibilities and necessities concerning modal space itself, is problematic for a Lewis‐style analysis of modality. A popular solution, proposed by Divers, postulates explicit semantic clauses for a collapse of advanced modalizing, to the conclusion that all such matters are, if true in the first place, both ...
Lorenzo Azzano, Ciro De Florio, Aldo Frigerio   +2 more
wiley   +1 more source

Galaxy groups in the presence of cosmological constant: Increasing the masses of groups

Physics Letters B
The boundaries of galaxy groups and clusters are defined by the interplay between the Newtonian attractive force and the decoupling from the local expansion of the Universe.
David Benisty, Moshe M. Chaichian, Anca Tureanu   +2 more
doaj   +1 more source

Visual Icons

Philosophy and Phenomenological Research, EarlyView.
ABSTRACT Philosophers often characterize perception as image‐like. There is little agreement, however, about what constitutes an imagistic or iconic representation. This article identifies five signature properties of iconic representations endorsed in the philosophical and scientific literature: item‐richness, feature‐richness, spatiotemporal ...
Jake Quilty‐Dunn
wiley   +1 more source

Group-Cluster Merging and the Formation of Starburst Galaxies [PDF]

The Astrophysical Journal, 1999
A significant fraction of clusters of galaxies are observed to have substructure, which implies that merging between clusters and subclusters is a rather common physical process of cluster formation. It still remains unclear how cluster merging affects the evolution of cluster member galaxies.
openaire   +2 more sources

Tracing Early Cosmic Chemical Enrichment: A Uniform XMM-Newton Survey of Metallicity in Galaxy Groups and Clusters

The Astrophysical Journal
Observed metal abundances in the intracluster medium (ICM) of galaxy groups and clusters, Z _ICM , exceed what is expected from present-day stellar populations alone.
Anne E. Blackwell, Joel N. Bregman, Sophia Chan Davis   +2 more
doaj   +1 more source