Stellar Collisions in Galactic Nuclei: Impact on Destructive Events Near a Supermassive Black Hole [PDF]
The Astrophysical Journal, 2023 The centers of galaxies host both a supermassive black hole and a dense stellar cluster. Such an environment should lead to stellar collisions, possibly at very high velocities so that the total energy involved is of the same order as supernova ...
Shmuel Balberg, Gilad Yassur
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Stellar collisions in globular clusters: the origin of multiple stellar populations [PDF]
Monthly Notices of the Royal Astronomical Society, 2022 ABSTRACT Two generations of stars, G1 and G2, typically populate Galactic globular clusters (GCs). The origin of G2 stars is unclear. We uncover two empirical dependencies between GC characteristics, which can be explained by the formation of G2 main-sequence (MS) stars due to collision/merging of their primordial counterparts (G1).
В. В. Кравцов +3 more
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Building Blue Stragglers with Stellar Collisions [PDF]
Proceedings of the International Astronomical Union, 2007 The evolution of stellar collision products in cluster simulations has usually been modelled using simplified prescriptions. Such prescriptions either replace the collision product with an (evolved) main sequence star, or assume that the collision ...
Glebbeek, E., Pols, O. R.
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Magnetic Field Amplification during Stellar Collisions between Low-mass Stars
The Astrophysical Journal LettersBlue straggler stars in stellar clusters appear younger and bluer than other cluster members, offering a unique opportunity to understand the stellar dynamics and populations within their hosts.
Taeho Ryu +4 more
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Stellar Collisions and Pulsar Planets [PDF]
, 2000 Tex, 17 pages, including 6 postscript figures To appear in: Stellar Collisions, Mergers and their Consequences, ASP Conference Series, Ed.
Brad M. S. Hansen
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Simulations of Stellar Collisions Involving Pre-Main Sequence Stars [PDF]
The Astrophysical Journal, 2005 In this paper, we present the results of smoothed particle hydrodynamic (SPH) simulations of collisions between pre-main sequence stars and a variety of other kinds of stars. Simulations over a range of impact parameters and velocities were performed. We
Alison Sills +3 more
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A binary-related origin mediated by environmental conditions for blue straggler stars [PDF]
Nature CommunicationsBlue stragglers are anomalously massive core hydrogen-burning stars that, according to the theory of single star evolution, should not exist. They are suspected to form in mass-enhancement processes, involving binary evolution or stellar collisions.
Francesco R. Ferraro +9 more
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Multiple Populations in Globular Clusters: The Possible Contributions of Stellar Collisions [PDF]
, 2010 Globular clusters were thought to be simple stellar populations, but recent photometric and spectroscopic evidence suggests that the clusters' early formation history was more complicated.
Alison Sills +53 more
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On the Orbital Effects of Stellar Collisions in Galactic Nuclei: Tidal Disruption Events and Ejected Stars [PDF]
The Astrophysical Journal LettersDense stellar clusters surround the supermassive black holes (SMBH) in galactic nuclei. Interactions within the cluster can alter the stellar orbits, occasionally driving a star into the SMBH’s tidal radius, where it becomes ruptured, or expelling a star
Sanaea C. Rose, Brenna Mockler
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A Supernova Remnant Collision with a Stellar Wind [PDF]
The Astrophysical Journal, 2003 Numerical simulations of the interaction between supernova ejecta and a stellar wind are presented. We follow the temporal evolution of the shock fronts that are formed through such an interaction and determine the velocities, temperatures and densities.
P. F. Velázquez +2 more
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