Results 1 to 10 of about 484,594 (307)

Galaxy interactions II: High density environments [PDF]

open access: yes, 2011
With the aim to assess the role of dense environments in galaxy interactions, properties we present an analysis of close galaxy pairs in groups and clusters, obtained from the Sloan Digital Sky Survey Data Release 7 (SDSS-DR7).
Abazajian   +64 more
core   +2 more sources

Evolution of galaxy groups in the Illustris simulation [PDF]

open access: yes, 2016
We present the first study of evolution of galaxy groups in the Illustris simulation. We focus on dynamically relaxed and unrelaxed galaxy groups representing dynamically evolved and evolving galaxy systems, respectively.
Dariush, Ali A.   +2 more
core   +3 more sources

Pre-Processing and Post-Processing in Group-Cluster Mergers [PDF]

open access: yes, 2013
Galaxies in clusters are more likely to be of early type and to have lower star formation rates than galaxies in the field. Recent observations and simulations suggest that cluster galaxies may be `pre-processed' by group or filament environments and ...
Ricker, Paul M., Vijayaraghavan, Rukmani
core   +2 more sources

Galaxy groups in the 2dF redshift survey: Galaxy Spectral Type Segregation in Groups [PDF]

open access: yesMon.Not.Roy.Astron.Soc. 335 (2002) 825, 2002
The behaviour of the relative fraction of galaxies with different spectral types in groups is analysed as a function of projected local galaxy density and the group-centric distance. The group sample was taken from the 2dF Group Galaxy Calatogue constructed by Merch\'an & Zandivarez.
Diego G. Lambas   +5 more
arxiv   +6 more sources

Accretion of galaxy groups into galaxy clusters [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2020
ABSTRACT We study the role of group infall in the assembly and dynamics of galaxy clusters in ΛCDM. We select 10 clusters with virial mass M200 ∼ 1014 $\rm M_\odot$ from the cosmological hydrodynamical simulation Illustris and follow their galaxies with stellar mass M⋆ ≥ 1.5 × 108 $\rm M_\odot$.
Laura V. Sales   +3 more
openaire   +4 more sources

Formation of a Massive Lenticular Galaxy Under the Tidal Interaction with a Group of Dwarf Galaxies

open access: yesThe Astrophysical Journal Letters, 2023
Based on the atomic-hydrogen (H i ) observations using the Five-hundred-meter Aperture Spherical radio Telescope, we present a detailed study of the gas-rich massive S0 galaxy NGC 1023 in a nearby galaxy group.
Jin-Long Xu   +8 more
doaj   +1 more source

Strangulation in Galaxy Groups [PDF]

open access: yesThe Astrophysical Journal, 2007
We use a cosmological chemodynamical simulation to study how the group environment impacts the star formation properties of disk galaxies. The simulated group has a total mass of M~8x10^12 Msun and a total X-ray luminosity of L_X~10^41 erg s^-1. Our simulation suggests that ram pressure is not sufficient in this group to remove the cold disk gas from a
Daisuke Kawata   +2 more
openaire   +3 more sources

Scaling Properties of Galaxy Groups [PDF]

open access: yesUniverse, 2021
Galaxy groups and poor clusters are more common than rich clusters, and host the largest fraction of matter content in the Universe. Hence, their studies are key to understand the gravitational and thermal evolution of the bulk of the cosmic matter.
Lorenzo Lovisari   +3 more
openaire   +5 more sources

The Effect of the LMC on the Milky Way System

open access: yesGalaxies, 2023
We review the recent theoretical and observational developments concerning the interaction of the Large Magellanic Cloud (LMC) with the Milky Way and its neighbourhood.
Eugene Vasiliev
doaj   +1 more source

The Galaxy Number Density Profile of Halos

open access: yesThe Astrophysical Journal, 2023
More precise measurements of galaxy clustering will be provided by the next generation of galaxy surveys, such as DESI, WALLABY, and the Square Kilometre Array.
Fei Qin   +3 more
doaj   +1 more source

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