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Based on recent findings of a formation mechanism of substructure in tidal tails by Kuepper, Macleod & Heggie (2008) we investigate a more comprehensive set of N-body models of star clusters on orbits about a Milky-Way-like potential. We…

Solar and Stellar Astrophysics · Physics 2015-05-14 A. H. W. Kuepper , P. Kroupa , H. Baumgardt , D. C. Heggie

High-redshift clusters of galaxies show an over-abundance of spirals by a factor of 2-3, and the corresponding under-abundance of S0 galaxies, relative to the nearby clusters. This morphological evolution can be explained by tidal…

Astrophysics · Physics 2015-06-24 Oleg Y. Gnedin

We present direct $N$-body simulations of tidally filling 30,000 ${\rm M}_\odot$ star clusters orbiting between 10 kpc and 100 kpc in galaxies with a range of dark matter substructure properties. The time-dependent tidal force is determined…

Astrophysics of Galaxies · Physics 2019-08-21 Jeremy J. Webb , Jo Bovy , Raymond G. Carlberg , Mark Gieles

The rapidly improving quality and resolution of both low surface brightness observations and cosmological simulations of galaxies enables one to address the important question how the formation history is imprinted in the outer, unrelaxed…

Astrophysics of Galaxies · Physics 2024-06-21 Lucas M. Valenzuela , Rhea-Silvia Remus

Observations and simulations have demonstrated that star formation in galaxies must be actively suppressed to prevent the formation of over-massive galaxies. Galactic outflows driven by stellar feedback or supermassive black hole accretion…

Tidal structures around globular clusters provide valuable insights into cluster evolution and the hierarchical assembly of the Milky Way. Using wide-field imaging data from the DESI Legacy Survey combined with a color-magnitude…

Astrophysics of Galaxies · Physics 2026-02-24 Shouzhi Wang , Jundan Nie , Biwei Jiang , Hao Tian , Chao Liu , Ying-Hua Zhang

We use a simulation performed within the Constrained Local UniversE Simulation (CLUES) project to study a realistic Local Group-like object. We employ this group as a numerical laboratory for studying the evolution of the population of its…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-14 Jaroslaw Klimentowski , Ewa L. Lokas , Alexander Knebe , Stefan Gottloeber , Luis A. Martinez-Vaquero , Gustavo Yepes , Yehuda Hoffman

We present a phenomenological description of the properties of tidal tails forming around dwarf galaxies orbiting the Milky Way. For this purpose we use collisionless N-body simulations of dwarfs initially composed of a disk embedded in an…

Astrophysics of Galaxies · Physics 2015-10-12 Ewa L. Lokas , Grzegorz Gajda , Stelios Kazantzidis

[Abridged] Within the hierarchical framework for galaxy formation, minor merging and tidal interactions are expected to shape all large galaxies to the present day. As a consequence, most seemingly normal disk galaxies should be surrounded…

Tidal interactions of galaxies in galaxy clusters have been proposed as one potential explanation of the morphology-density relation at low masses. The efficiency of tidal transformation is expected to depend strongly on the orbit of a…

Astrophysics of Galaxies · Physics 2015-04-15 Daniel Bialas , Thorsten Lisker , Christoph Olczak , Rainer Spurzem , Ralf Kotulla

According to the hierarchical formation paradigm, galaxies form through mergers of smaller entities and massive black holes (MBHs), if lurking at their centers, migrate to the nucleus of the newly formed galaxy, where they form binary…

Astrophysics of Galaxies · Physics 2024-09-25 Ludovica Varisco , Massimo Dotti , Matteo Bonetti , Elisa Bortolas , Alessandro Lupi

Most stars in galactic disks are believed to be born as a member of star clusters or associations. Star clusters formed in disks are disrupted due to the tidal stripping and the evolution of star clusters themselves, and as a results new…

Astrophysics of Galaxies · Physics 2015-06-11 M. S. Fujii , J. Baba

Long tails and streams of stars are the most noticeable upshots of galaxy collisions. Their origin as gravitational, tidal, disturbances has however been recognized only less than fifty years ago and more than ten years after their first…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-03 Pierre-Alain Duc , Florent Renaud

In hierarchical models of galaxy formation, stellar tidal streams are expected around most, if not all, galaxies. Although these features may provide useful diagnostics of the $\Lambda$CDM model, their observational properties remain poorly…

We present N-body simulations of realistic globular clusters containing initial mass function in the galaxy to study effects of tidal field systematically on the properties of outer parts of globular clusters. Using NBODY6 which takes into…

Astrophysics · Physics 2009-11-10 Kang Hwan Lee , Hyung Mok Lee , Hwankyung Sung

The orbital decay and tidal disruption of a star cluster in a galaxy is studied in an analytical manner. Owing to dynamical friction, the star cluster spirals in toward the center of the galaxy. Simultaneously, the galactic tidal field…

Astrophysics · Physics 2009-11-07 H. Mouri , Y. Taniguchi

The semi-analytic theory of tidal shocks proves to be a powerful tool to study tidal interactions of star clusters and satellite galaxies with their massive hosts. New models of the globular cluster evolution employ a combination of…

Astrophysics · Physics 2007-05-23 Oleg Y. Gnedin , Jeremiah P. Ostriker

We study the dependence of satellite star formation rate and morphology on group dynamics for a sample of SDSS groups. We classify the group dynamical state and study satellite properties for populations of galaxies at small and large…

Astrophysics of Galaxies · Physics 2017-03-22 Ian D. Roberts , Laura C. Parker

We use a combination of self-supervised machine learning and visual classification to identify tidal features in a sample of 34,331 galaxies with stellar masses $\log_{10}(M_{*}/\rm{M}_{\odot})\geq9.5$ and redshift $z\leq0.4$, drawn from…

Astrophysics of Galaxies · Physics 2025-09-24 A. Desmons , S. Brough , F. Lanusse , L. Canepa , A. Khalid

In the first paper we presented 27 hydrodynamical cosmological simulations of galaxies with total masses between $5 \times 10^8$ and $10^{10}\,\mathrm{M}_\odot$. In this second paper we use a subset of these cosmological simulations as…

Astrophysics of Galaxies · Physics 2017-11-08 Jonas Frings , Andrea V. Macciò , Tobias Buck , Camilla Penzo , Aaron A. Dutton , Aura Obreja , Marvin Blank