Zobrazeno 1 - 10
of 271
pro vyhledávání: '"Common envelope evolution"'
Autor:
Zhuo Chen, Natalia Ivanova
Publikováno v:
The Astrophysical Journal Letters, Vol 963, Iss 2, p L35 (2024)
Luminous red novae and their connection to common envelope evolution (CEE) remain elusive in astrophysics. Here, we present a radiation hydrodynamic model capable of simulating the light curves of material ejected during a CEE. For the first time, th
Externí odkaz:
https://doaj.org/article/c58b2fe26acd40119edbf53fc76ac263
Autor:
Salvatore Orlando, Emanuele Greco, Ryosuke Hirai, Tomoki Matsuoka, Marco Miceli, Shigheiro Nagataki, Masaomi Ono, Ke-Jung Chen, Dan Milisavljevic, Daniel Patnaude, Fabrizio Bocchino, Nancy Elias-Rosa
Publikováno v:
The Astrophysical Journal, Vol 977, Iss 1, p 118 (2024)
We investigate SN 2014C using three-dimensional (3D) hydrodynamic modeling, focusing on its early interaction with a dense circumstellar medium (CSM). Our objective is to uncover the pre-supernova (SN) CSM structure and constrain the progenitor star
Externí odkaz:
https://doaj.org/article/848e7a1d0f7c4961b825ba51fb4eb677
Publikováno v:
The Astrophysical Journal, Vol 977, Iss 1, p 24 (2024)
Double helium white dwarfs (He WDs) are a type of gravitational wave source and are greatly important in studies of binary interaction, particularly in common envelope (CE) ejection physics. Most double He WDs with mass ratios of q ∼ 1 are formed t
Externí odkaz:
https://doaj.org/article/08cc8da7436a47c48d039ec5371ec106
Autor:
Alejandra Rosselli-Calderon, Ricardo Yarza, Ariadna Murguia-Berthier, Valeriia Rohoza, Rosa Wallace Everson, Andrea Antoni, Morgan MacLeod, Enrico Ramirez-Ruiz
Publikováno v:
The Astrophysical Journal, Vol 977, Iss 1, p 16 (2024)
Triple stellar systems allow us to study stellar processes that cannot be attained in binary stars. The evolutionary phases in which the stellar members undergo mass exchanges can alter the hierarchical layout of these systems. Yet, the lack of a sel
Externí odkaz:
https://doaj.org/article/92c59eb5d2a94205b39f9f5ea452e146
Publikováno v:
The Astrophysical Journal Supplement Series, Vol 274, Iss 1, p 11 (2024)
The unstable mass transfer situation in binary systems will asymptotically cause the adiabatic expansion of the donor star and finally lead to the common envelope phase. This process could happen in helium binary systems once the helium donor star fi
Externí odkaz:
https://doaj.org/article/40947e30659a48b99324dac63868725b
Publikováno v:
The Astrophysical Journal, Vol 971, Iss 2, p 132 (2024)
Thorne–Żytkow objects (TŻOs), hypothetical merger products in which a neutron star is embedded in a stellar core, are traditionally considered steady-state configurations. Their assembly, especially through dynamical channels, is not well underst
Externí odkaz:
https://doaj.org/article/3cbd2916ea264e0f93762fb881483032
Publikováno v:
The Astrophysical Journal, Vol 969, Iss 1, p 1 (2024)
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. These fits are given as functions of total mass, metallicity, and surf
Externí odkaz:
https://doaj.org/article/176f2bc9dbbb4369a938c1ad73e98545
Autor:
Zhenwei Li, Yangyang Zhang, Hailiang Chen, Hongwei Ge, Dengkai Jiang, Jiangdan Li, Xuefei Chen, Zhanwen Han
Publikováno v:
The Astrophysical Journal, Vol 964, Iss 1, p 22 (2024)
The hot subdwarf O/B stars (sdO/Bs) are known as extreme horizontal branch stars, which is of great importance in stellar evolution theory. The sdO/Bs are generally thought to have a helium-burning core and a thin hydrogen envelope ( M _env < 0.02 M
Externí odkaz:
https://doaj.org/article/bd8d833b21a94b58b816069331824033
Autor:
Peter Scherbak, Jim Fuller
Publikováno v:
The Astrophysical Journal, Vol 962, Iss 2, p 185 (2024)
Double white dwarf (WD) binaries are increasingly being discovered at short orbital periods where strong tidal effects and significant tidal heating signatures may occur. We assume that the tidal potential of the companion excites outgoing gravity wa
Externí odkaz:
https://doaj.org/article/d0f8148567a5451a8f7cde9ba1ddd267
Autor:
Travis Court, Carles Badenes, Shiu-Hang Lee, Daniel Patnaude, Guillermo García-Segura, Eduardo Bravo
Publikováno v:
The Astrophysical Journal, Vol 962, Iss 1, p 63 (2024)
The nature of Type Ia supernova (SN Ia) explosions remains an open issue, with several contending progenitor scenarios actively being considered. One such scenario involves an SN Ia explosion inside a planetary nebula (PN) in the aftermath of a stell
Externí odkaz:
https://doaj.org/article/7327c96b03ce41a795dfcdd97c73090d