54 citations · 345 across the 22 of their papers we have counts for
16 papers · 1 filter
Eye of the beholder: Observer reference frame bias in Hickson-like compact groups of galaxies
A. Zandivarez, E. Diaz-Gimenez, A. R. Callen
[Abridged] We investigate how the identification of Hickson-like CGs depends on the observer's reference frame, quantifying how frequently the same system would be recognised from…
Compact groups from semi-analytical models of galaxy formation -- VI: Evolution of the two first-ranked galaxies
A. Zandivarez, E. Diaz-Gimenez
[Abridged] Compact groups (CGs) of galaxies have proven to be unique environments for studying galaxy interactions. We propose a detailed analysis of the galaxy evolution to disent…
Compact groups of galaxies in GAMA -- Probing the densest minor systems at intermediate redshifts
A. Zandivarez, E. Diaz-Gimenez, A. Taverna +2
[Abridged] Over the years, several compact group catalogues have been built using different methods, but most of them are not deep enough to go beyond the very local universe with…
Compact groups from semi-analytical models of galaxy formation -- V: their assembly channels as a function of the environment
A. Taverna, E. Diaz-Gimenez, A. Zandivarez +2
We delved into the assembly pathways and environments of compact groups (CGs) of galaxies using mock catalogues generated from semi-analytical models (SAMs) on the Millennium simul…
Compact groups from semi-analytical models of galaxy formation -- IV: effect of group assembly on the evolution of their galaxies
Ariel Zandivarez, Eugenia Diaz-Gimenez, Antonela Taverna +1
Using over 3000 compact groups (CGs) of galaxies extracted from mock catalogues built from semi-analytical models of galaxy formation (SAMs), we study whether the CG assembly chann…
Hickson-like compact groups inhabiting different environments
A. Taverna, J. M. Salerno, I. V. Daza-Perilla +4
Although Compact Groups of galaxies (CGs) have been envisioned as isolated extremely dense structures in the Universe, it is accepted today that many of them could be not as isolat…
The influence of Hickson-like compact group environment on galaxy luminosities
Ariel Zandivarez, Eugenia Diaz-Gimenez, Antonela Taverna
Compact groups of galaxies are devised as extreme environments where interactions may drive galaxy evolution. In this work, we analysed whether the luminosities of galaxies inhabit…
Galaxy clustering in the VVV Near-IR Galaxy Catalogue
Mario Soto, Mario A. Sgró, Laura D. Baravalle +7
Mapping galaxies at low Galactic latitudes and determining their clustering status are fundamental steps in defining the large-scale structure in the nearby Universe. The VVV Near-…
Compact groups from semi-analytical models of galaxy formation -- III: purity and completeness of Hickson-like catalogues
Antonela Taverna, Eugenia Diaz-Gimenez, Ariel Zandivarez +1
Many catalogues of isolated compact groups of galaxies (CGs) have been extracted using Hickson's criteria to identify isolated, dense systems of galaxies, with at least three or fo…
Compact groups from semi-analytical models of galaxy formation -- II: Different assembly channels
Eugenia Diaz-Gimenez, Ariel Zandivarez, Gary Mamon
We study the formation of over 6000 compact groups (CGs) of galaxies identified in mock redshift-space galaxy catalogues built from semi-analytical models of galaxy formation (SAMs…
Compact groups from semi-analytical models of galaxy formation -- I: a comparative study of frequency and nature
Eugenia Diaz-Gimenez, Antonela Taverna, Ariel Zandivarez +1
Compact groups (CGs) of galaxies are defined as isolated and dense galaxy systems that appear to be a unique site of multiple galaxy interactions. Semi-analytical models of galaxy…
Improving Hickson-like compact group finders in redshift surveys: an implementation in the SDSS
Eugenia Diaz-Gimenez, Ariel Zandivarez, Antonela Taverna
In this work we present an algorithm to identify compact groups (CGs) that closely follows Hickson's original aim and that improves the completeness of the samples of compact group…
On the properties of compact groups identified in different photometric bands
Antonela Taverna, Eugenia Diaz-Gimenez, Ariel Zandivarez +2
Historically, compact group catalogues vary not only in their identification algorithms and selection functions, but also in their photometric bands. Differences between compact gr…
Fossil groups in the Millennium simulation. From the brightest to the faintest galaxies during the past 8 Gyr
Maria Jose Kanagusuku, Eugenia Diaz-Gimenez, Ariel Zandivarez
We investigate the evolution of bright and faint galaxies in fossil and non-fossil groups. We used mock galaxies constructed based on the Millennium run simulation II. We identifie…
Where are compact groups in the local Universe?
Eugenia Diaz-Gimenez, Ariel Zandivarez
The purpose of this work is to perform a statistical analysis of the location of compact groups in the Universe from observational and semi-analytical points of view. We used the v…
Are compact groups hostile towards faint galaxies?
Ariel Zandivarez, Eugenia Diaz-Gimenez, Claudia Mendes de Oliveira +1
The goal of this work is to understand whether the extreme environment of compact groups can affect the distribution and abundance of faint galaxies around them. We performed an an…