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Antitruncated Stellar Disks via Minor Mergers [PDF]
Astrophysical Journal, 2007 We use hydrodynamic simulations of minor mergers of galaxies to investigate the nature of surface brightness excesses at large radii observed in some spiral galaxies: antitruncated stellar disks. We find that this process can produce the antitruncation via two competing effects: (1) merger-driven gas inflows that concentrate mass in the center of the ...
Anil Seth
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Stellar Populations and Mergers
1990Our Galaxy has four stellar populations: the disk, the thick disk, the bulge, and the halo. Did they form out of a single proto-Galactic nebula, with each population being but a different stage in the process? Or have at least some of them nothing to do with the origins and evolution of the others, as expected from mergers?
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Stellar Mergers in Dense Stellar Systems and growth of supermassive black holes
Proceedings of the International Astronomical Union, 2022AbstractThe rapid formation of supermassive black holes (SMBHs) at high redshifts is still a puzzle. One hypothesis is that intermediate-mass black holes (IMBHs) serve as seeds for their formation, which could arise from hierarchical mergers in dense star clusters.
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Stellar collisions and mergers in the cores of globular clusters
Physics Reports, 1999Abstract Rare and exotic stars are being discovered with Hubble Space Telescope (HST) observations in large numbers in the cores of globular clusters. Stellar collisions and/or mergers are likely responsible for many of these bizarre objects. I review the theoretical arguments which predict substantial populations of blue stragglers and cataclysmic ...
Michael Shara
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Simulating a Stellar Binary Merger
The discovery of luminous red nova (LRN) V1309 Sco revealed a binary star system prior to its outburst in brightness, with an exponentially decaying orbital separation. This allowed, for the first time, theoretical models of contact stellar mergers to be verified by observations, although a direct comparison had not been made.openaire +1 more source
Seismic Probes of Stellar Mergers and Magnetism
Stellar pulsations can do what most other astrophysical observables cannot: directly probe internal stellar properties. This thesis consolidates work investigating how stellar oscillation modes are affected by two common but "noncanonical" pieces of stellar physics: mergers and magnetism. The earlier chapters develop "seismic stellar merger genealogy,"openaire +1 more source
Extragalactic neutrino-emission induced by supermassive and stellar mass black hole mergers
Monthly Notices of the Royal Astronomical Society, 2022Julia Tjus +2 more
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Galaxy And Mass Assembly (GAMA): galaxy close pairs, mergers and the future fate of stellar mass
Monthly Notices of the Royal Astronomical Society, 2014Jon Loveday +2 more
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