Results 111 to 120 of about 59,782 (271)

Models for the magnitude-distribution of brightest cluster galaxies [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2001
Abstract submitted to AAS.
J. P. Bernstein   +2 more
openaire   +4 more sources

A Chromosome Inversion Creates a Supergene for Sex and Colour in Lake Malawi Cichlids

open access: yesMolecular Ecology, Volume 34, Issue 20, October 2025.
ABSTRACT Cichlid fishes have the highest rates of evolutionary turnover of sex chromosomes among vertebrates. Many large structural polymorphisms in the radiation of cichlids in Lake Malawi are associated with sex chromosomes and may also carry adaptive variation.
Kristen A. Behrens   +10 more
wiley   +1 more source

A Large Mass of H2 in the Brightest Cluster Galaxy in Zwicky 3146 [PDF]

open access: yes, 2006
We present the Spitzer/IRS mid-infrared spectrum of the infrared-luminous (LIR = 4 × 1011 L☉) brightest cluster galaxy (BCG) in the X-ray-luminous cluster Zwicky 3146 (Z3146; z = 0.29).
E. Egami, G. Rieke, D. Fadda, D. Hines
semanticscholar   +1 more source

Reassessing the Relationship Between Meteor Radio Afterglows and Optical Persistent Trains

open access: yesJournal of Geophysical Research: Space Physics, Volume 130, Issue 9, September 2025.
Abstract Meteor radio afterglows (MRAs) and optical persistent trains (PTs) are two types of long‐lived phenomena which are occasionally observed following the occurrence of a meteor. Both phenomena are thought to be produced by intrinsic emission mechanisms; PTs have been associated with chemiluminescent reactions between meteoric metals and ...
L. E. Cordonnier   +5 more
wiley   +1 more source

Powerful Yet Lonely: Is 3C 297 a High-redshift Fossil Group?

open access: yesThe Astrophysical Journal Supplement Series, 2022
The environment of the high-redshift ( z = 1.408), powerful radio-loud galaxy 3C 297 has several distinctive features of a galaxy cluster. Among them, a characteristic halo of hot gas revealed by Chandra X-ray observations.
Valentina Missaglia   +10 more
doaj   +1 more source

Two Micron‐Size Dark Dimensions

open access: yesFortschritte der Physik, Volume 73, Issue 8, August 2025.
Abstract Two extra dimensions of micron scale might simultaneously address the gauge and cosmological hierarchy problems. In this paper various observational bounds in scenarios with one and two large extra dimensions are examined, to see if they are compatible with the micron scale.
Luis A. Anchordoqui   +2 more
wiley   +1 more source

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

open access: yesGalaxies, 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   +6 more
doaj   +1 more source

Radio luminosity function of brightest cluster galaxies [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2016
10 pages, 9 figures.
Jin-Lin Han, Z. L. Wen, Zhen Yuan
openaire   +3 more sources

Tracing Dark Matter in the Central Regions of Galaxy Clusters Using Galaxies, Gas, and Intracluster Light in TNG300: Connections to Cluster Dynamical State

open access: yesThe Astrophysical Journal
Recent studies have highlighted the potential of intracluster light (ICL) as a dark matter tracer. Moreover, ICL coevolves with the brightest cluster galaxy (BCG) and the host cluster, making it a valuable tool for understanding cluster dynamics. In this
Jaewon Yoo   +6 more
doaj   +1 more source

Galaxy Superclusters Detected in the Modified PF-Catalog Using the FOF Method

open access: yesOpen Astronomy, 2011
The Modified Catalog of Galaxy Clusters and Groups (Panko & Flin 2006, PF), covering an area of 5000 square degrees in the southern sky, was used as the input for the search of galaxy superclusters.
Panko E.
doaj   +1 more source

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