Results 1 to 10 of about 5,806,348 (275)
Bipolar planetary nebulae from common-envelope evolution of binary stars
Astronomy and Astrophysics, 2022 Asymmetric shapes and evidence for binary central stars suggest a common-envelope origin for many bipolar planetary nebulae. The bipolar components of the nebulae are observed to expand faster than the rest, and the more slowly expanding material has been associated with the bulk of the envelope ejected during the common-envelope phase of a stellar ...
Volker Springel +2 more
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Post–Common-Envelope Binary Stars and the Precataclysmic Binary PG 1114+187 [PDF]
Astronomical Journal, 2000 We present orbit-resolved spectroscopy and orbit-sampled photometry of the binary system PG 1114+187. Both photometry and radial velocity studies reveal a period P = 1.75992 days, which is taken to be the orbital period of the binary. Strong modulation of emission-line strength with the same period is also present. A preliminary mass ratio, M2/M1 ≈ 0.7,
Todd C. Hillwig +2 more
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Post-common envelope binary stars, radiative levitation, and blue large-amplitude pulsators [PDF]
Monthly Notices of the Royal Astronomical Society, 2018 Following the recent discovery of a new class of pulsating star, the blue large-amplitude pulsators (BLAPs), pulsation stability analysis was carried out on evolutionary models of post-common envelope (CE) ejection stars of 0.3 and 0.46 solar masses.
Conor Byrne, C Simon Jeffery
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Common-envelope ejection in massive binary stars [PDF]
Astronomy and Astrophysics, 2016 13 pages, 7 figures, A&A ...
Dorottya Szécsi +2 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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The common envelope phase in the evolution of binary stars
Astrophysical Journal, 1988 The common envelope phase in the evolution of binary systems is examined. Three parameters are identified which characterize the efficiency of energy deposition, the importance of three-dimensional effects, and the efficiency of spin-up of the envelope. It is demonstrated that the efficiency of deposition of orbital energy into envelope ejection can be
Noam Soker
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On the Detectability of Post-common-envelope Binary Central Stars of Planetary Nebulae
Research Notes of the AAS, 2022 Abstract Common envelope evolution is widely accepted as the principal shaping agent in the formation of aspherical planetary nebulae. However, only some 20% of planetary nebulae are found to host post-common-envelope binary central stars.
David Jones, George Hume
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Modeling High Mass X-Ray Binaries to Double Neutron Stars through Common Envelope Evolution
The Astrophysical JournalWe present detailed evolutionary simulations of wide binary systems with high-mass (8–20 M _⊙ ) donor stars and a 1.4 M _⊙ neutron star. Mass transfer in such binaries is dynamically unstable, and common envelope (CE) evolution is followed.
Yu-Dong Nie +5 more
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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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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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