Results 61 to 70 of about 12,793,373 (294)

The Nearest Group of Galaxies [PDF]

The Astrophysical Journal, 1999
Has been accepted for publication in the Astrophysical Journal ...
openaire   +3 more sources

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 ...
Norbert Werner, Norbert Werner, Norbert Werner, François Mernier, François Mernier   +4 more
openaire   +3 more sources

Filaments of galaxies and Voronoi diagrams

Open Astronomy, 2018
The intersections between a spherical shell and the faces of Voronoi polyhedrons are numerically evaluated. The nodes of these intersections are the points that share the same distances from three nuclei.
Zaninetti Lorenzo
doaj   +1 more source

The Evolution of Galaxy Groups and of Galaxies Therein [PDF]

, 2007
Properties of groups of galaxies depend sensitively on the algorithm for group selection, and even the most recent catalogs of groups built from redshift-space selection should suffer from projections and infalling galaxies. The cosmo-dynamical evolution of groups from initial Hubble expansion to collapse and virialization leads to a fundamental track (
openaire   +4 more sources

Observational Evidence for an Age Dependence of Halo Bias

, 2006
We study the dependence of the cross-correlation between galaxies and galaxy groups on group properties. Confirming previous results, we find that the correlation strength is stronger for more massive groups, in good agreement with the expected mass ...
Frank C. van den Bosch, Gao L., H. J. Mo, Mo H. J., Weinmann S. M., Xiaohu Yang   +5 more
core   +2 more sources

Abundance profiles and cool cores in galaxy groups [PDF]

, 2011
Using data from the Two Dimensional XMM-Newton Group Survey (2dXGS), we have examined the abundance profile properties of both cool core (CC) and non cool core (NCC) galaxy groups.
Alastair J. R. Sanderson, Alexis Finoguenov, Allen, Anders, Arnaud, Baldi, Bird, Buote, Buote, Buote, Burns, Cleveland, Cleveland, Condon, Condon, Coziol, Croston, David, De Grandi, De Grandi, Diehl, Finoguenov, Finoguenov, Finoguenov, Giodini, Gonzalez, Grevesse, Gu, Gunn, Jesper Rasmussen, Jetha, Johnson, Kirkpatrick, Kochanek, Komiyama, Lin, Mahdavi, Mathews, McCarthy, McNamara, Moll, Morita, Peres, Poole, Rasera, Rasmussen, Rasmussen, Rebusco, Ria Johnson, Sanders, Sanderson, Sanderson, Sanderson, Sato, Schindler, Shabala, Sivanandam, Skrutskie, Sun, Sun, Tokoi, Trevor J. Ponman, Voigt   +62 more
core   +1 more source

Dark matter halo properties of GAMA galaxy groups from 100 square degrees of KiDS weak lensing data [PDF]

, 2015
The Kilo-Degree Survey is an optical wide-field survey designed to map the matter distribution in the Universe using weak gravitational lensing.
M. Viola, M. Cacciato, M. Brouwer, K. Kuijken, H. Hoekstra, P. Norberg, A. Robotham, E. V. Uitert, M. Alpaslan, I. Baldry, A. Choi, J. D. Jong, S. Driver, T. Erben, A. Grado, A. Graham, C. Heymans, H. Hildebrandt, A. Hopkins, N. Irisarri, B. Joachimi, J. Loveday, L. Miller, R. Nakajima, P. Schneider, C. Sifón, G. V. Kleijn   +26 more
semanticscholar   +1 more source

Using member galaxy luminosities as halo mass proxies of galaxy groups

, 2015
Reliable halo mass estimation for a given galaxy system plays an important role both in cosmology and galaxy formation studies. Here we set out to find the way that can improve the halo mass estimation for those galaxy systems with limited brightest ...
Lu, Yi, Shen, Shiyin, Yang, Xiaohu
core   +1 more source

The Photography of Groups of Galaxies [PDF]

Symposium - International Astronomical Union, 1978
The method of combining several negatives together is at last coming into use. Forty years ago this method was used for the first time by Leontovsky in Leningrad. Putting together many negatives he was able to do photometry of M31 to fainter magnitudes than was possible photoelectrically.
openaire   +2 more sources

GALAXY GROUPS: A 2MASS CATALOG [PDF]

, 2015
A galaxy group catalog is built from the sample of the 2MASS Redshift Survey almost complete to Ks = 11.75 over 91% of the sky. Constraints in the construction of the groups were provided by scaling relations determined by close examination of well ...
R. Tully
semanticscholar   +1 more source