Results 61 to 70 of about 69,785 (306)

The Environment of ``E+A'' Galaxies [PDF]

open access: yes, 1995
The violent star formation history of ``E+A'' galaxies and their detection almost exclusively in distant clusters is frequently used to link them to the ``Butcher-Oemler effect'' and to argue that cluster environment influences galaxy evolution.
Hashimoto, Y.   +7 more
core   +2 more sources

Triggering of merger‐induced starbursts by the tidal field of galaxy groups and clusters [PDF]

open access: yes, 2007
Star formation in galaxies is for a part driven by galaxy mergers. At low redshift, star formation activity is low in high-density environments like groups and clusters, and the star formation activity of galaxies increases with their isolation.
M. Martig, F. Bournaud
semanticscholar   +1 more source

Dynamical segregation of galaxies into groups and clusters [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2004
We have performed a systematic analysis of the dynamics of different galaxy populations in galaxy groups from the 2dFGRS. For this purpose we have combined all the groups into a single system, where velocities v and radius r are expressed adimensionally.
Lares, M., Lambas, D. G., Sanchez, A. G.
openaire   +2 more sources

MORPHOLOGICAL TYPES OF 254 RICH PF GALAXY CLUSTERS

open access: yesOdessa Astronomical Publications, 2014
We determined the morphological types for 254 rich galaxy clusters from the PF Catalogue of Galaxy Clusters and Groups. The data set contains the PF galaxy clusters, which have no ACO coinciding ones.
E. A. Panko   +2 more
doaj   +1 more source

Entropy Evolution in Galaxy Groups and Clusters: a Comparison of External and Internal Heating [PDF]

open access: yes, 2001
The entropy in hot, X-ray-emitting gas in galaxy groups and clusters is a measure of past heating events, except for the entropy lost by radiation from denser regions.
F. Brighenti, W. Mathews
semanticscholar   +1 more source

The galaxy environment in GAMA G3C groups using the Kilo Degree Survey Data Release 3 [PDF]

open access: yes, 2018
We aim to investigate the galaxy environment in GAMA Galaxy Groups Catalogue (G3C) using a volume-limited galaxy sample from the Kilo Degree Survey Data Release 3.
Bilicki, M.   +15 more
core   +5 more sources

Implications of the remarkable homogeneity of galaxy groups and clusters [PDF]

open access: yes, 2009
We measure the diversity of galaxy groups and clusters with mass M > 1013 h−1 M⊙, in terms of the star formation history of their galaxy populations, for the purpose of constraining the mass scale at which environmentally important processes play a role ...
M. Balogh, S. McGee
semanticscholar   +1 more source

Velocity-dependent self-interacting dark matter from groups and clusters of galaxies [PDF]

open access: yesJournal of Cosmology and Astroparticle Physics, 2020
We probe the self-interactions of dark matter with relaxed galaxy groups and clusters using observational data from strong and weak lensing and stellar kinematics.
L. Sagunski   +4 more
semanticscholar   +1 more source

X-RAY EMISSION AND ORIENTATION OF SELECTED PF GALAXY CLUSTERS

open access: yesOdessa Astronomical Publications, 2016
X-ray counterparts for 35 galaxy clusters contained in the PF catalogue of galaxy clusters and groups were found in XMM-Newton archive. 22 ones (all from ACO catalogue) have extended elliptic X-ray haloes appropriate for determination of orientation ...
A. V. Tugay, S. S. Dylda, E. A. Panko
doaj   +1 more source

HEATING THE HOT ATMOSPHERES OF GALAXY GROUPS AND CLUSTERS WITH CAVITIES: THE RELATIONSHIP BETWEEN JET POWER AND LOW-FREQUENCY RADIO EMISSION [PDF]

open access: yes, 2011
We present scaling relations between jet power and radio power measured using the Giant Metrewave Radio Telescope (GMRT), Chandra, and XMM-Newton, for a sample of nine galaxy groups combined with the Bîrzan et al. sample of clusters. Cavity power is used
E. O’Sullivan   +6 more
semanticscholar   +1 more source

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