A Measurement of the Galaxy Group-Thermal Sunyaev-Zel’dovich Effect Cross-Correlation Function [PDF]
, 2016 Stacking cosmic microwave background (CMB) maps around known galaxy clusters and groups provides a powerful probe of the distribution of hot gas in these systems via the Sunyaev-Zel'dovich (SZ) effect. A stacking analysis allows one to detect the average
V. Vikram, A. Lidz, B. Jain
semanticscholar +1 more source
Hot Atmospheres of Galaxies, Groups, and Clusters of Galaxies [PDF]
, 2020 Accepted for publication in the book "Reviews in Frontiers of Modern Astrophysics: From Space Debris to Cosmology" (eds Kabath, Jones and Skarka; publisher Springer Nature) funded by the European Union Erasmus+ Strategic Partnership grant "Per Aspera Ad Astra Simul" 2017-1-CZ01-KA203 ...
Werner, Norbert, Mernier, François
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Studying the Patterns of the Universe
Open Astronomy, 2011 The SDSS galaxy catalog is one of the best databases for galaxy distribution studies. The SDSS DR8 data is used to construct the galaxy cluster catalog.
Sepp T. +4 more
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Friends-of-friends galaxy group finder with membership refinement. Application to the local Universe [PDF]
, 2016 Context. Groups form the most abundant class of galaxy systems. They act as the principal drivers of galaxy evolution and can be used as tracers of the large-scale structure and the underlying cosmology.
E. Tempel +8 more
semanticscholar +1 more source
Galaxy groups in the 2dF Galaxy Redshift Survey: a compactness analysis of groups [PDF]
Monthly Notices of the Royal Astronomical Society, 2003 A comprehensive study on compactness has been carried out on the 2dF Galaxy Group Catalogue constructed by Merch n & Zandivarez. The compactness indexes defined in this work take into account different geometrical constraints in order to explore a wide range of possibilities.
Zandivarez, A. +4 more
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COMPARISON OF OPTICAL AND X-RAY MASS ESTIMATES OF THE CHANDRA GALAXY CLUSTERS AT Z < 0.1
Odessa Astronomical Publications, 2013 We used the optical data taken from SDSS DR7 galaxy and group catalog to determine the optical mass of 37 nearer Chandra galaxy clusters for comparison with the X-ray mass estimates.
Iu. V. Babyk, I. B. Vavilova
doaj +1 more source
Mind the Gap: Tightening the Mass-Richness Relation with Magnitude Gaps [PDF]
, 2013 We investigate the potential to improve optical tracers of cluster mass by exploiting measurements of the magnitude gap, m12, defined as the difference between the r-band absolute magnitude of the two brightest cluster members.
Abazajian +33 more
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LOFAR MSSS: Discovery of a 2.56 Mpc giant radio galaxy associated with a disturbed galaxy group [PDF]
, 2017 This document is the Accepted Manuscript of an article accepted for publication in Astronomy & Astrophysics following peer review. The version of record [A. O.
A. O. Clarke +48 more
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Galaxy groups in the 2dF Galaxy Redshift Survey: galaxy spectral type segregation in groups [PDF]
Monthly Notices of the Royal Astronomical Society, 2002 3 figures replaced, accepted for publication in ...
Dominguez, M. J. +5 more
openaire +2 more sources
Constraints on the dynamical evolution of the galaxy group M81 [PDF]
, 2017 According to the standard model of cosmology, galaxies are embedded in dark matter halos which are made of particles beyond the standard model of particle physics, thus extending the mass and the size of the visible baryonic matter by typically two ...
W. Oehm, I. Thies, P. Kroupa
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