Results 51 to 60 of about 69,785 (306)

An inventory of galaxies in cosmic filaments feeding galaxy clusters: galaxy groups, backsplash galaxies, and pristine galaxies [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2021
ABSTRACT Galaxy clusters grow by accreting galaxies from the field and along filaments of the cosmic web. As galaxies are accreted they are affected by their local environment before they enter (pre-processing), and traverse the cluster potential.
Ulrike Kuchner   +8 more
openaire   +4 more sources

Evidence for AGN Feedback in Galaxy Clusters and Groups

open access: yesAdvances in Astronomy, 2012
The current generation of flagship X-ray missions, Chandra and XMM-Newton, has changed our understanding of the so-called “cool-core” galaxy clusters and groups.
Myriam Gitti   +2 more
doaj   +1 more source

ФОРМЫ ТРЕХКОМПОНЕНТНЫХ СВЕРХСКОПЛЕНИЙ ГАЛАКТИК

open access: yesOdessa Astronomical Publications, 2011
We analyzed the shapes of galaxy superclusters, contains only 3 galaxy clusters. The superclusters were found using PF Catalogue Galaxy Clusters and Groups covering 5000 square degrees as input data.
Е. А. Панько
doaj   +1 more source

The similarity of the stellar mass fractions of galaxy groups and clusters [PDF]

open access: yes, 2013
We employ a large sample of 20171 optically-selected groups and clusters at 0.15 < z < 0.4 in the SDSS to investigate how the stacked stellar mass fraction varies across a wide range of total mass, $M_{500}$.
J. M. Budzynski   +3 more
semanticscholar   +1 more source

A Census of Baryons in Galaxy Clusters and Groups [PDF]

open access: yes, 2007
We determine the contribution of stars in galaxies, intracluster stars, and the intracluster medium to the total baryon budget in nearby galaxy clusters and groups. We find that the baryon mass fraction (f_b) within r500 is constant for systems with M500
Gonzalez, Anthony H.   +2 more
core   +1 more source

Galaxy evolution in groups and clusters: star formation rates, red sequence fractions and the persistent bimodality [PDF]

open access: yes, 2011
Using galaxy group/cluster catalogues created from the Sloan Digital Sky Survey Data Release 7, we examine in detail the specific star formation rate (SSFR) distribution of satellite galaxies and its dependence on stellar mass, host halo mass and halo ...
A. Wetzel, J. Tinker, C. Conroy
semanticscholar   +1 more source

Exploring diffuse radio emission in galaxy clusters and groups with uGMRT and SKA [PDF]

open access: yesJournal of astrophysics and astronomy, 2022
Diffuse radio emission has been detected in a considerable number of galaxy clusters and groups, revealing the presence of pervasive cosmic magnetic fields, and of relativistic particles in the large scale structure of the Universe.
S. Paul   +15 more
semanticscholar   +1 more source

AEGIS: Chandra Observation of DEEP2 Galaxy Groups and Clusters [PDF]

open access: yes, 2006
We present a 200 ksec Chandra observation of seven spectroscopically selected, high redshift (0.75 < z < 1.03) galaxy groups and clusters discovered by the DEEP2 Galaxy Redshift Survey in the Extended Groth Strip (EGS). X-ray emission at the locations of
Alison L. Coil   +13 more
core   +2 more sources

The XMM Large-Scale Structure survey: an initial sample of galaxy groups and clusters to a redshift z < 0.6★ [PDF]

open access: yes, 2005
We present X-ray and optical spectroscopic observations of 12 galaxy groups and clusters identified within the X-ray Multi-Mirror (XMM) Large-Scale Structure (LSS) survey.
J. Willis   +16 more
semanticscholar   +1 more source

Galaxy and cluster biasing from Local Group dynamics [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2000
Comparing the gravitational acceleration induced on the Local Group of galaxies by different tracers of the underline density field we estimate, within the linear gravitational instability theory and the linear biasing ansatz, their relative bias factors. Using optical SSRS2 galaxies, IRAS (PSCz) galaxies and Abell/ACO clusters, we find b_{O,I} ~ 1.21 +
Plionis, M.   +6 more
openaire   +3 more sources

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