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Planetary Nebulae Shaped by Common Envelope Evolution

Galaxies, 2018
The morphologies of planetary nebula have long been believed to be due to wind shaping processes in which a “fast wind„ from the central star impacts a previously ejected envelope.
Adam Frank, Zhuo Chen, Thomas Reichardt, Orsola De Marco, Eric Blackman, Jason Nordhaus   +5 more
doaj   +3 more sources

Wobbling Jets in Common Envelope Evolution

The 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

Jet-powered Turbulence in Common Envelope Evolution

The Astrophysical Journal, 2023
We conduct a three-dimensional hydrodynamical simulation of common envelope evolution (CEE) where a neutron star (NS) spirals in inside the envelope of a red supergiant star in a predetermined orbit.
Shlomi Hillel, Ron Schreier, Noam Soker
doaj   +1 more source

Lessons from the Ionised and Molecular Mass of Post-CE PNe

Galaxies, 2022
Close binary evolution is widely invoked to explain the formation of axisymmetric planetary nebulae after a brief common envelope phase. The evolution of the primary would be interrupted abruptly, its still quite massive envelope being fully ejected to ...
Miguel Santander-García, David Jones, Javier Alcolea, Valentín Bujarrabal, Roger Wesson   +4 more
doaj   +1 more source

Long-term Evolution of Massive-star Post-common-envelope Circumbinary Disks and the Environments of Fast Luminous Transients

The Astrophysical Journal, 2023
If the envelope of a massive star is not entirely removed during common envelope (CE) interaction with an orbiting compact (e.g., black hole (BH) or neutron star (NS)) companion, the residual bound material eventually cools, forming a centrifugally ...
Semih Tuna, Brian D. Metzger
doaj   +1 more source

Post-AGB Discs from Common-Envelope Evolution

Galaxies, 2018
Post-asymptotic giant branch (post-AGB) stars with discs are all binaries. Many of these binaries have orbital periods between 100 and 1000 days so cannot have avoided mass transfer between the AGB star and its companion, likely through a common-
Robert G. Izzard, Adam S. Jermyn
doaj   +1 more source

SCATTER: A New Common Envelope Formalism

The 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, Matthias U. Kruckow, Yan Gao, Patrick G. Neunteufel, Chiaki Kobayashi   +4 more
doaj   +1 more source

Dusty Common Envelope Evolution

Galaxies
We present the first hydrodynamical simulations of common envelope evolution that include the formation of dust and the effect of radiation pressure on dust grains.
Lionel Siess, Luis C. Bermúdez-Bustamante, Orsola De Marco, Daniel J. Price, Miguel González-Bolívar, Chunliang Mu, Mike Y. M. Lau, Ryosuke Hirai, Taïssa Danilovich   +8 more
doaj   +1 more source

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, Christopher A Tout, Xuefei Chen, Arnab Sarkar, Dominic J Walton, Zhanwen Han   +5 more
doaj   +1 more source

Fits for the Convective Envelope Mass in Massive Stars

The Astrophysical Journal
We explore the evolution of massive stars (>8 M _⊙ ) with 1D models and present analytical fits to the masses and binding energies of the convective portions of their envelopes.
Lewis Picker, Ryosuke Hirai, Ilya Mandel
doaj   +1 more source