293 citations · 999 across the 13 of their papers we have counts for
13 papers
Brightest group and cluster galaxies as indicators of relaxation
K. Kelder, P. Heinämäki, P. Nurmi +2
Context. Galaxy groups and clusters are widely used to probe the evolution of the cosmic web and cosmology, while assuming that they are relaxed. Aims. We identify the properties o…
The richest clusters in the Coma and Leo superclusters: Properties and evolution
Maret Einasto, Peeter Tenjes, Rain Kipper +6
We study the substructure, connectivity, and galaxy content of galaxy clusters A1656 and 1367 in the Coma supercluster and of A1185 in the Leo supercluster with the aim of understa…
Galaxy Cluster Mass Reconstruction Project: III. The impact of dynamical substructure on cluster mass estimates
L. Old, R. Wojtak, F. R. Pearce +14
With the advent of wide-field cosmological surveys, we are approaching samples of hundreds of thousands of galaxy clusters. While such large numbers will help reduce statistical un…
An integrative approach based on probabilistic modelling and statistical inference for morpho-statistical characterization of astronomical data
R. S. Stoica, S. Liu, L. J. Liivamägi +7
This paper describes several applications in astronomy and cosmology that are addressed using probabilistic modelling and statistical inference.
Groups in the Millennium Simulation and in SDSS DR7
P. Nurmi, P. Heinämäki, T. Sepp +6
The Millennium N-body simulation and the Sloan Digital Sky Survey seventh data release (SDSS DR7) galaxy and galaxy group catalogues are compared to study the properties of galaxy…
Detecting filamentary pattern in the cosmic web: a catalogue of filaments for the SDSS
E. Tempel, R. S. Stoica, V. J. Martinez +3
The main feature of the spatial large-scale galaxy distribution is its intricate network of galaxy filaments. This network is spanned by the galaxy locations that can be interprete…
Multimodality in galaxy clusters from SDSS DR8: substructure and velocity distribution
M. Einasto, J. Vennik, P. Nurmi +8
We search for the presence of substructure, a non-Gaussian, asymmetrical velocity distribution of galaxies, and large peculiar velocities of the main galaxies in galaxy clusters wi…
Groups and clusters of galaxies in the SDSS DR8. Value-added catalogues
E. Tempel, E. Tago, L. J. Liivamägi
Aims. We intend to compile a new galaxy group and cluster sample of the latest available SDSS data, adding several parameter for the purpose of studying the supercluster network, g…
SDSS DR7 superclusters. Principal component analysis
M. Einasto, L. J. Liivamagi, E. Saar +4
We apply the principal component analysis and Spearman's correlation test to study the properties of superclusters drawn from the SDSS DR7. We analyse possible selection effects in…
The Sloan Great Wall. Morphology and galaxy content
M. Einasto, L. J. Liivamagi, E. Tempel +8
We present the results of the study of the morphology and galaxy content of the Sloan Great Wall (SGW). We use the luminosity density field to determine superclusters in the SGW, a…
Towards understanding the structure of voids in the cosmic web
J. Einasto, I. Suhhonenko, G. Hütsi +7
Our goal is to see how density waves of different scale combine to form voids between galaxy systems of various scale. We perform numerical simulations of structure formation in cu…
SDSS DR7 superclusters. The catalogues
L. J. Liivamägi, E. Tempel, E. Saar
We have constructed a set of supercluster catalogues for the galaxies from the SDSS survey main and luminous red galaxy (LRG) flux-limited samples. To delineate superclusters, we c…
Galaxy morphology, luminosity and, environment in the SDSS DR7
E. Tempel, E. Saar, L. J. Liivamägi +4
We study the influence of the environment on the evolution of galaxies by investigating the luminosity function (LF) of galaxies of different morphological types and colours at dif…