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Related papers: Globular Clusters in a Cosmological N-body Simulat…

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We present a suite of direct N-body simulations of low mass ($<10^4~M_{\odot}$) globular cluster streams initialized with observationally-motivated binary demographics in order to understand the effect of in-cluster dynamical processing on…

Astrophysics of Galaxies · Physics 2026-03-10 Anya Phillips , Charlie Conroy , Jacob Nibauer , Long Wang , Vedant Chandra , Ana Bonaca , Jay Strader , Morgan MacLeod

The surroundings of globular clusters in the outer halo are one of the best places to look for the remnants of ancient dwarf satellites. The classical Searle & Zinn (1978) scenario of the formation of the Milky Way, in which the halo…

In the hierarchical formation scenario in which the outer halo of the Milky Way is the result of the continuous accretion of low-mass galaxies, a fraction of the Galactic globular cluster system might have originated in and been accreted…

We explore whether stellar tidal streams can provide information on the secular, cosmological evolution of the Milky Way's gravitational potential and on the presence of subhalos. We carry out long-term (~t_hubble) N-body simulations of…

Astrophysics · Physics 2009-11-13 Jorge Penarrubia , Andrew J. Benson , David Martinez-Delgado , Hans-Walter Rix

We investigate the long-term dynamical evolution of two distinct stellar populations of low-mass stars in globular clusters in order to study whether the energy equipartition process can explain the high number of stars harbouring abundance…

Astrophysics · Physics 2009-11-13 T. Decressin , H. Baumgardt , P. Kroupa

Massive globular clusters lose stars via internal and external processes. Internal processes include mainly two-body relaxation, while external processes include interactions with the Galactic tidal field. We perform a suite of N-body…

Astrophysics of Galaxies · Physics 2021-03-26 Yohai Meiron , Jeremy J. Webb , Jongsuk Hong , Peter Berczik , Rainer Spurzem , Raymond G. Carlberg

The formation of galaxy clusters in hierarchically clustering universes is investigated by means of high resolution N-body simulations. The simulations are performed using a newly developed multi-mass scheme which combines a PM code with a…

Astrophysics · Physics 2007-05-23 A. Huss , B. Jain , M. Steinmetz

Models for the formation and growth of structure in a cold dark matter dominated universe predict that galaxy halos should contain significant substructure. Studies of the Milky Way, however, have yet to identify the expected few hundred…

Astrophysics · Physics 2009-11-07 R. A. Ibata , G. F. Lewis , M. J. Irwin

Galactic globular clusters are old, dense star systems typically containing 10\super{4}--10\super{7} stars. As an old population of stars, globular clusters contain many collapsed and degenerate objects. As a dense population of stars,…

Solar and Stellar Astrophysics · Physics 2015-05-30 Matthew J. Benacquista , Jonathan M. B. Downing

By means of direct N-body simulations and simplified numerical models, we study the formation and characteristics of the tidal tails around Palomar 5, along its orbit in the Milky Way potential. Unlike previous findings, we are able to…

Astrophysics of Galaxies · Physics 2015-06-11 Alessandra Mastrobuono-Battisti , Paola Di Matteo , Marco Montuori , Misha Haywood

In previous papers of this series, we developed a new algorithm for modeling the formation of star clusters in galaxy formation simulations. Here we investigate how dissolution of bound star clusters affects the shape of the cluster mass…

Astrophysics of Galaxies · Physics 2019-05-21 Hui Li , Oleg Y. Gnedin

Observations have revealed that most stars are born in clusters. These systems, containing from tens to thousands of stars and typically significant mass in gas in the youngest systems, evolve due to a combination of stellar and star-gas…

Astrophysics · Physics 2007-05-23 Ian A. Bonnell

The largest stellar halos in the universe are found in massive galaxy clusters, where interactions and mergers of galaxies, along with the cluster tidal field, all act to strip stars from their host galaxies and feed the diffuse…

Astrophysics of Galaxies · Physics 2016-09-07 J. Christopher Mihos

Evolution with mass segregation and the evolution of the rotation of cores are both discussed for self-similar core collapse. Evolution with angular velocity proportional to the square root of the density is predicted. On the Dynamical Main…

Astrophysics · Physics 2007-05-23 Donald Lynden-Bell

Stellar haloes encode a fossil record of a galaxy's accretion history, generally in the form of structures of low surface brightness, such as stellar streams. While their low surface brightness makes it challenging to determine their age,…

We present N-body simulations of star clusters that initially evolve within a strong compressive tidal field and then transition into extensive tidal fields of varying strengths. While subject to compressive tides, clusters can undergo…

Solar and Stellar Astrophysics · Physics 2017-04-12 Jeremy J. Webb , Saahil S. Patel , Enrico Vesperini

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

This paper aims to retrieve the ghost streams under the pre-assumption that all the globular clusters in our Galaxy were formed in the very early merge events. The results are based on two speculations: that the specific energy and angular…

Astrophysics · Physics 2014-10-13 Shuang Gao , Bi-Wei Jiang , Yong-Heng Zhao

We study the formation of the Milky Way's halo in a $\Lambda$CDM cosmology by scaling down a high resolution simulation of the formation of a cluster of galaxies. We determine how much phase-space substructure is left over from the objects…

Astrophysics · Physics 2009-09-25 Amina Helmi , Simon D. M. White , Volker Springel

Some globular clusters are observed to host a population of second generation (SG) stars which show chemical anomalies and must have formed from gas containing matter processed in the envelopes of first generation (FG) cluster stars. We…

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