Results 11 to 20 of about 974 (262)
Simulating a stellar contact binary merger – I. Stellar models [PDF]
Monthly Notices of the Royal Astronomical Society, 2021 ABSTRACT We study the initial conditions of a common envelope (CE) event resulting in a stellar merger. A merger’s dynamics could be understood through its light curve, but no synthetic light curve has yet been created for the full evolution.
Roger W M Hatfull +2 more
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Stellar mergers are common [PDF]
Monthly Notices of the Royal Astronomical Society, 2014 Submitted to MNRAS (13 pages, 6 figures, 3 tables)
Kochanek, C. S. +2 more
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MERGERS AND OBLIQUITIES IN STELLAR TRIPLES [PDF]
The Astrophysical Journal, 2014 Accepted to ApJ, 10 ...
Smadar Naoz, Daniel C. Fabrycky
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Magnetic activity in stellar merger products [PDF]
Monthly Notices of the Royal Astronomical Society, 2007 We study the expected X-ray luminosity of stellar merger products several years after merger. The X-ray emission is assumed to result from magnetic activity. The extended envelope of the merger product possesses a large convective region and it is expected to rotate fast.
Soker, Noam, Tylenda, Romuald
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Mixing in massive stellar mergers [PDF]
Monthly Notices of the Royal Astronomical Society: Letters, 2008 Abstract The early evolution of dense star clusters is possibly dominated by close interactions between stars, and physical collisions between stars may occur quite frequently. Simulating a stellar collision event can be an intensive numerical task, as detailed calculations of this process require hydrodynamic simulations in three ...
Gaburov, E. +2 more
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Dense Stellar Cores in Merger Remnants [PDF]
The Astrophysical Journal, 1994 We use numerical models which include star formation to analyze the mass profiles of remnants formed by mergers of disk galaxies. During a merger, dissipation in gas and ensuing star formation leave behind a dense stellar core in the remnant. Rather than joining smoothly onto a de Vaucouleurs profile, the starburst population leads to a sharp break in ...
Mihos, Chris, Hernquist, Lars
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Asteroseismic Signatures of Stellar Mergers
, 2021 We have included the inlists, important run files, and selected simulation data accompanying Rui and Fuller 2021 (“Asteroseismic Fingerprints of Stellar Mergers”), which makes use of Modules for Experiments in Stellar Astrophysics (MESA) version r12778.
Rui, Nicholas Z., Jim Fuller
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Violent stellar merger model for transient events [PDF]
Monthly Notices of the Royal Astronomical Society, 2006 We derive the constraints on the mass ratio for a binary system to merge in a violent process. We find that the secondary to primary stellar mass ratio should be ~0.003 < (M_2/M_1) < ~0.15. A more massive secondary star will keep the primary stellar envelope in synchronized rotation with the orbital motion until merger occurs. This implies a very
Soker, Noam, Tylenda, Romuald
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G5.89: an explosive outflow powered by a proto-stellar merger? [PDF]
Monthly Notices of the Royal Astronomical Society: Letters, 2019 ABSTRACTThe explosive outflows are a newly discovered family of molecular outflows associated with high-mass star-forming regions. Such energetic events are possibly powered by the release of gravitational energy related with the formation of a (proto)stellar merger or a close stellar binary.
Luis A Zapata +8 more
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Luminous red novae: Stellar mergers or giant eruptions? [PDF]
Astronomy & Astrophysics, 2019 We present extensive datasets for a class of intermediate-luminosity optical transients known as luminous red novae. They show double-peaked light curves, with an initial rapid luminosity rise to a blue peak (at −13 to −15 mag), which is followed by a longer-duration red peak that sometimes is attenuated, resembling a plateau.
Pastorello, A. +38 more
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