Results 21 to 30 of about 31,802 (281)
The post-common-envelope binary central star of the planetary nebula ETHOS 1 [PDF]
Monthly Notices of the Royal Astronomical Society, 2020 ABSTRACT We present a detailed study of the binary central star of the planetary nebula ETHOS 1 (PN G068.1+11.0). Simultaneous modelling of light and radial velocity curves reveals the binary to comprise a hot and massive pre-white dwarf with an M-type main-sequence companion.
James Munday +9 more
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Binary neutron star merger in common envelope jets supernovae [PDF]
Monthly Notices of the Royal Astronomical Society, 2021 ABSTRACT I explore a triple-star scenario where a tight neutron star (NS)–NS binary system enters the envelope of a red supergiant (RSG) star and spirals-in towards its core. The two NSs accrete mass through accretion discs and launch jets that power a very luminous and long transient event, a common envelope jets supernova (CEJSN) event.
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Common envelope binary interaction simulations between a thermally pulsating AGB star and a low mass companion. [PDF]
Mon Not R Astron Soc, 2022 ABSTRACT At least one in five of all planetary nebulae are the product of a common envelope (CE) interaction, where the companion in-spirals into the envelope of an asymptotic giant branch (AGB) star ejecting the nebula and leaving behind a compact binary. In this work we carry out 3D smoothed particle hydrodynamics simulations of the CE
González-Bolívar M +4 more
europepmc +4 more sources
Simulating the Outcome of a Binary Neutron Star Merger in a Common Envelope Jets Supernova [PDF]
The Astrophysical Journal, 2021 Abstract We simulate the influence of the energy that the merger process of two neutron stars (NSs) releases inside a red supergiant (RSG) star on the RSG envelope inner to the merger location. In the triple-star common envelope evolution (CEE) that we consider, a tight binary system of two NSs spiraling in inside an RSG envelope and ...
Muhammad Akashi, Noam Soker
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A Common Envelope Binary Star Origin of Long Gamma-ray Bursts [PDF]
Monthly Notices of the Royal Astronomical Society, 2010 The stellar origin of gamma-ray bursts can be explained by the rapid release of energy in a highly collimated, extremely relativistic jet. This in turn appears to require a rapidly spinning highly magnetised stellar core that collapses into a magnetic neutron star or a black hole within a relatively massive envelope.
Tout, Christopher A +4 more
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The post-common-envelope binary central star of the planetary nebula Ou 5 [PDF]
Monthly Notices of the Royal Astronomical Society, 2021 We present a detailed study of the stellar and orbital parameters of the post-common envelope binary central star of the planetary nebula Ou 5. Low-resolution spectra obtained during the primary eclipse - to our knowledge the first isolated spectra of the companion to a post-common-envelope planetary nebula central star - were compared to catalogue ...
Jones, David +12 more
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A survey for post common-envelope binary stars using GALEX and SDSS photometry [PDF]
Monthly Notices of the Royal Astronomical Society, 2009 We report the first results of our programme to obtain multi-epoch radial velocity measurements of stars with a strong far-UV excess to identify post common-envelope binaries (PCEBs). The targets have been identified using optical photometry from SDSS DR4, ultraviolet photometry from GALEX GR2 and proper motion information from SDSS DR5.
Maxted, P. F. L. +7 more
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Dust formation during the interaction of binary stars by common envelope
Proceedings of the International Astronomical Union, 2023 AbstractWe performed numerical simulations of the common envelope (CE) interaction between two intermediate-mass asymptotic giant branch (AGB) stars and their low-mass companions. For the first time, formation and growth of dust in the envelope is calculated explicitly.
Luis C. Bermúdez-Bustamante +9 more
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Common envelope evolution of binary stars [PDF]
Space Science Reviews, 1989 AbstractWe discuss the common envelope phase in the evolution of binary systems. The problem of the efficiency of energy deposition into envelope ejection is treated in some detail. We describe the implications of common envelope evolution for the shaping of planetary nebulae with close binary nuclei and for double white dwarf systems, considered to be
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Tidal dissipation impact on the eccentric onset of common envelope phases in massive binary star systems [PDF]
Monthly Notices of the Royal Astronomical Society, 2021 ABSTRACT Tidal dissipation due to turbulent viscosity in the convective regions of giant stars plays an important role in shaping the orbits of pre-common-envelope systems. Such systems are possible sources of transients and close compact binary systems that will eventually merge and produce detectable gravitational wave signals.
Michelle Vick +3 more
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