Results 21 to 30 of about 892 (259)
Galaxies, 2018 The increase in discovered close binary central stars of planetary nebulae is leading to a sufficiently large sample to begin to make broader conclusions about the effect of close binary stars on common envelope evolution and planetary nebula formation ...
Todd Hillwig
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Evolution of Accreting Neutron Star Common Envelopes and Their Nucleosynthesis Possible P-nuclide Production [PDF]
EPJ Web of Conferences, 2023 In a binary system, a short lived phase called a common envelope can occur in which both stars share the envelope of the primary. During this phase, there is the opportunity for nucleosynthesis to occur at high temperatures and densities in the accretion
Abrahams Sophie E. D. +4 more
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Are extreme AGB stars post-common envelope binaries?
, 2020 Accepted for publication in MNRAS ...
Dell'Agli, F. +8 more
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The post-common-envelope binary central star of the planetary nebula PN G283.7-05.1 [PDF]
Astronomy & Astrophysics, 2020 We present the discovery and characterisation of the post-common-envelope central star system in the planetary nebula PN G283.7−05.1. Deep images taken as part of the POPIPlaN survey indicate that the nebula may possess a bipolar morphology similar to other post-common-envelope planetary nebulae.
Jones, D +10 more
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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.
George Hume, Paige Yarker, David Jones
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Criteria for Dynamical Timescale Mass Transfer of Metal-poor Intermediate-mass Stars
The Astrophysical Journal, 2023 The stability criteria of rapid mass transfer and common-envelope evolution are fundamental in binary star evolution. They determine the mass, mass ratio, and orbital distribution of many important systems, such as X-ray binaries, type Ia supernovae, and
Hongwei Ge +5 more
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Planetary Nebulae Embryo after a Common Envelope Event
Galaxies, 2018 In the centers of some planetary nebulae are found close binary stars. The formation of those planetary nebulae was likely through a common envelope event, which transformed an initially-wide progenitor binary into the currently observed close binary ...
Natalia Ivanova, Jose L. A. Nandez
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Post–Common-Envelope Binary Stars and the Precataclysmic Binary PG 1114+187
The 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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The Astrophysical Journal, 2023 Abstract The formation histories of compact binary mergers, especially stellar-mass binary black hole mergers, have recently come under increased scrutiny and revision. We revisit the question of the dominant formation channel and efficiency of forming binary neutron star (BNS) mergers.
Monica Gallegos-Garcia +2 more
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The planetary nebula IC 4776 and its post-common-envelope binary central star [PDF]
Monthly Notices of the Royal Astronomical Society, 2017 We present a detailed analysis of IC 4776, a planetary nebula displaying a morphology believed to be typical of central star binarity. The nebula is shown to comprise a compact hourglass-shaped central region and a pair of precessing jet-like structures.
Paulina Sowicka +7 more
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