Results 21 to 30 of about 1,172 (243)
Building Blue Stragglers with Stellar Collisions [PDF]
Proceedings of the International Astronomical Union, 2007 AbstractThe 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 product was completely mixed during the collision.It is known from hydrodynamical simulations of ...
O. R. Pols, Evert Glebbeek
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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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EARLY HYDRODYNAMIC EVOLUTION OF A STELLAR COLLISION [PDF]
The Astrophysical Journal, 2014 7 pages, 5 figures (without appendices).
Boaz Katz, Doron Kushnir
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Survival of polycyclic aromatic hydrocarbon knockout fragments in the interstellar medium
Nature Communications, 2021 Ion storage rings allow reactions to be studied over orders of magnitude in time, bridging the gap between typical experimental and astronomical timescales.
Michael Gatchell +8 more
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Improved treatment of dark matter capture in compact stars
SciPost Physics Proceedings, 2023 Compact stellar objects are promising cosmic laboratories to test the nature of dark matter (DM). DM captured by the strong gravitational field of these stellar remnants transfers kinetic energy to the star during the collision.
Sandra Robles
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Massive first star binaries as new tools for Galactic archaeology [PDF]
EPJ Web of Conferences, 2022 Binary systems are important probes of the origin of stars with peculiar chemical features through the interactions between two stars. We have studied the evolution of a metal-free massive binary after the collision of the supernova ejecta with a low ...
Suda Takuma +4 more
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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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Distant Echoes of the Milky Way’s Last Major Merger
The Astrophysical Journal, 2023 The majority of the Milky Way’s stellar halo consists of debris from our galaxy’s last major merger, the Gaia-Sausage-Enceladus (GSE). In the past few years, stars from the GSE have been kinematically and chemically studied in the inner 30 kpc of our ...
Vedant Chandra +11 more
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The Astrophysical JournalNGC 1052-DF2 and -DF4 are two ultradiffuse galaxies that have been reported as deficient in dark matter and associated with the same galaxy group. Recent findings suggest that DF2 and DF4 are part of a large linear substructure of dwarf galaxies that ...
Yimeng Tang +10 more
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Red giant stellar collisions in the Galactic Centre [PDF]
Monthly Notices of the Royal Astronomical Society, 2009 We show that collisions with stellar--mass black holes can partially explain the absence of bright giant stars in the Galactic Centre, first noted by Genzel et al, 1996. We show that the missing objects are low--mass giants and AGB stars in the range 1-3 M$_{\odot}$.
James E. Dale +4 more
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