Results 1 to 10 of about 6,072,722 (271)

Surveying Planetary Nebulae Central Stars for Close Binaries: Constraining Evolution of Central Stars Based on Binary Parameters

open access: yesGalaxies, 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
doaj   +2 more sources

Planetary Nebulae Embryo after a Common Envelope Event

open access: yesGalaxies, 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
doaj   +2 more sources

The Evolution of Compact Binary Star Systems

open access: yesLiving Reviews in Relativity, 2014
We review the formation and evolution of compact binary stars consisting of white dwarfs (WDs), neutron stars (NSs), and black holes (BHs). Mergings of compact-star binaries are expected to be the most important sources for forthcoming gravitational-wave
Konstantin A. Postnov, Lev R. Yungelson
doaj   +3 more sources

The Evolution of Compact Binary Star Systems

open access: yesLiving Reviews in Relativity, 2006
We review the formation and evolution of compact binary stars consisting of white dwarfs (WDs), neutron stars (NSs), and black holes (BHs). Binary NSs and BHs are thought to be the primary astrophysical sources of gravitational waves (GWs) within the ...
Yungelson, Lev R., Postnov Konstantin A.
doaj   +2 more sources

Rejuvenated Accretors Have Less Bound Envelopes: Impact of Roche Lobe Overflow on Subsequent Common Envelope Events

open access: yesThe Astrophysical Journal Letters, 2023
Common envelope (CE) evolution is an outstanding open problem in stellar evolution, critical to the formation of compact binaries including gravitational-wave sources.
M. Renzo   +7 more
doaj   +1 more source

The Impact of Angular Momentum Loss on the Outcomes of Binary Mass Transfer

open access: yesThe Astrophysical Journal, 2023
We use the rapid binary population synthesis code COMPAS to investigate commonly used prescriptions for the determination of mass transfer stability in close binaries and the orbital separations after stable mass transfer.
Reinhold Willcox   +3 more
doaj   +1 more source

Wobbling Jets in Common Envelope Evolution

open access: yesThe Astrophysical Journal, 2023
We find that the convective motion in the envelopes of red supergiant (RSG) stars supplies a non-negligible stochastic angular momentum to the mass that a secondary star accretes in a common envelope evolution (CEE), such that jets that the secondary ...
Noam Dori, Ealeal Bear, Noam Soker
doaj   +1 more source

SCATTER: A New Common Envelope Formalism

open access: yesThe Astrophysical Journal, 2023
One of the most mysterious astrophysical states is the common envelope (CE) phase of binary evolution, in which two stars are enshrouded by the envelope shed by one of them. Interactions between the stars and the envelope shrinks the orbit.
Rosanne Di Stefano   +4 more
doaj   +1 more source

Evolution of Accreting Neutron Star Common Envelopes and Their Nucleosynthesis Possible P-nuclide Production [PDF]

open access: yesEPJ 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
doaj   +1 more source

A Not-so-compact Companion: Massive, Oversized White Dwarf in a Post-common-envelope Eclipsing Binary

open access: yesThe Astronomical Journal
We provide a detailed characterization of 2M07515777+1807352, a post-common-envelope eclipsing binary system with a 10.3-day, nearly (but not quite) circular orbit ( e = 0.02).
Erin Motherway   +7 more
doaj   +1 more source

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