Results 21 to 30 of about 2,970 (256)
Dependence of stellar substructures in M31 type galaxy on satellite morphology in galaxy mergers [PDF]
Serbian Astronomical Journal, 2022 Stellar streams and shells are observed in halos of spiral galaxies. In this paper, we investigated the formation of these structures due to mergers between the host spiral galaxy and its dwarf satellite galaxies.
Milošević S.
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ON ASYMMETRIC DISTRIBUTIONS OF SATELLITE GALAXIES [PDF]
The Astrophysical Journal, 2014 5 pages, 2 figures, Ap J (Letters), in ...
A. Bowden, N. W. Evans, V. Belokurov
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The Morphological Evolution of Galaxy Satellites [PDF]
Astrophysics and Space Science, 2001 We study the evolution of galaxy satellites with high resolution N-body simulations. Satellites are modeled as replicas of typical low and high surface brightness galaxies (LSBs and HSBs). Encounters on high eccentricity orbits (as typical in hierarchical models of galaxy formation) strip LSBs of most of their stars and tend to decrease their surface ...
Monica Colpi +5 more
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Dynamical Friction on Satellite Galaxies [PDF]
Publications of the Astronomical Society of Japan, 2006 Abstract For a rigid model satellite, Chandrasekhar’s dynamical friction formula describes the orbital evolution quite accurately, when the Coulomb logarithm is chosen appropriately. However, it is not known if the orbital evolution of a real satellite with the internal degree of freedom can be described by the dynamical friction formula.
Yoko Funato +2 more
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Binary satellite galaxies [PDF]
Monthly Notices of the Royal Astronomical Society, 2014 Suggestions have appeared in the literature that the following five pairs of Milky Way and Andromeda satellite galaxies are gravitationally bound: Draco and Ursa Minor, Leo IV and V, Andromeda I and III, NGC 147 and 185, and the Magellanic clouds. Under the assumption that a given pair is gravitationally bound, the Virial theorem provides an estimate ...
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Quenching of satellite galaxies at the outskirts of galaxy clusters [PDF]
Monthly Notices of the Royal Astronomical Society, 2018 We find, using cosmological simulations of galaxy clusters, that the hot X-ray emitting intra-cluster medium (ICM) enclosed within the outer accretion shock extends out to $R_{\rm shock}\sim(2 - 3) R_{\rm vir}$, where $R_{\rm vir}$ is the standard virial radius of the halo.
Elad Zinger +3 more
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The Astrophysical Journal, 2023 We use two zoom-in ΛCDM hydrodynamical simulations of massive disk galaxies to study the possible existence of fixed satellite groups showing a kinematically coherent behavior across evolution (angular momentum conservation and clustering).
Isabel Santos-Santos +10 more
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The Astrophysical Journal, 2023 This paper represents an effort to provide robust constraints on the galaxy–halo connection and simultaneously test the Planck ΛCDM cosmology using a fully numerical model of small-scale galaxy clustering.
Gillian D. Beltz-Mohrmann +3 more
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The spatial distribution of satellites in galaxy clusters [PDF]
Monthly Notices of the Royal Astronomical Society, 2022 ABSTRACT The planar distributions of satellite galaxies around the Milky Way and Andromeda have been extensively studied as potential challenges to the standard cosmological model. Using the Sloan Digital Sky Survey and the Millennium simulation, we extend such studies to the satellite galaxies of massive galaxy clusters.
Qing Gu +6 more
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Back to the Green Valley: How to Rejuvenate an S0 Galaxy through Minor Mergers
Galaxies, 2015 About half of the S0 galaxies in the nearby Universe show signatures of recent or ongoing star formation. Whether these S0 galaxies were rejuvenated by the accretion of fresh gas is still controversial.
Michela Mapelli
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