Forming H-shaped and barrel-shaped nebulae with interacting jets

Muhammad Akashi; Ealeal Bear; Noam Soker

doi:10.1093/mnras/sty029

Forming H-shaped and barrel-shaped nebulae with interacting jets

Muhammad Akashi^*, Ealeal Bear, Noam Soker

^*Corresponding author for this work

Physics

Research output: Contribution to journal › Article › peer-review

10 Scopus citations

Abstract

We conduct three-dimensional hydrodynamical simulations of two opposite jets with large opening angles launched from a binary stellar system into a previously ejected shell and show that the interaction can form barrel-like and H-like shapes in the descendant nebula. Such features are observed in planetary nebulae (PNe) and supernova remnants. Under our assumption, the dense shell is formed by a short instability phase of the giant star as it interacts with a stellar companion, and the jets are then launched by the companion as it accretes mass through an accretion disc from the giant star. We find that the H-shaped and barrel-shaped morphological features that the jets form evolve with time, and that there are complicated flow patterns, such as vortices, instabilities, and caps moving ahead along the symmetry axis. We compare our numerical results with images of 12 PNe, and show that jet-shell interaction that we simulate can account for the barrel-like or H-like morphologies that are observed in these PNe.

Original language	English
Pages (from-to)	4794-4808
Number of pages	15
Journal	Monthly Notices of the Royal Astronomical Society
Volume	475
Issue number	4
DOIs	https://doi.org/10.1093/mnras/sty029
State	Published - 21 Apr 2018

Keywords

Binaries: close

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10.1093/mnras/sty029

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title = "Forming H-shaped and barrel-shaped nebulae with interacting jets",

abstract = "We conduct three-dimensional hydrodynamical simulations of two opposite jets with large opening angles launched from a binary stellar system into a previously ejected shell and show that the interaction can form barrel-like and H-like shapes in the descendant nebula. Such features are observed in planetary nebulae (PNe) and supernova remnants. Under our assumption, the dense shell is formed by a short instability phase of the giant star as it interacts with a stellar companion, and the jets are then launched by the companion as it accretes mass through an accretion disc from the giant star. We find that the H-shaped and barrel-shaped morphological features that the jets form evolve with time, and that there are complicated flow patterns, such as vortices, instabilities, and caps moving ahead along the symmetry axis. We compare our numerical results with images of 12 PNe, and show that jet-shell interaction that we simulate can account for the barrel-like or H-like morphologies that are observed in these PNe.",

keywords = "Binaries: close",

author = "Muhammad Akashi and Ealeal Bear and Noam Soker",

note = "Publisher Copyright: {\textcopyright} 2017 The Author(s).",

year = "2018",

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doi = "10.1093/mnras/sty029",

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T1 - Forming H-shaped and barrel-shaped nebulae with interacting jets

AU - Akashi, Muhammad

AU - Bear, Ealeal

AU - Soker, Noam

PY - 2018/4/21

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N2 - We conduct three-dimensional hydrodynamical simulations of two opposite jets with large opening angles launched from a binary stellar system into a previously ejected shell and show that the interaction can form barrel-like and H-like shapes in the descendant nebula. Such features are observed in planetary nebulae (PNe) and supernova remnants. Under our assumption, the dense shell is formed by a short instability phase of the giant star as it interacts with a stellar companion, and the jets are then launched by the companion as it accretes mass through an accretion disc from the giant star. We find that the H-shaped and barrel-shaped morphological features that the jets form evolve with time, and that there are complicated flow patterns, such as vortices, instabilities, and caps moving ahead along the symmetry axis. We compare our numerical results with images of 12 PNe, and show that jet-shell interaction that we simulate can account for the barrel-like or H-like morphologies that are observed in these PNe.

AB - We conduct three-dimensional hydrodynamical simulations of two opposite jets with large opening angles launched from a binary stellar system into a previously ejected shell and show that the interaction can form barrel-like and H-like shapes in the descendant nebula. Such features are observed in planetary nebulae (PNe) and supernova remnants. Under our assumption, the dense shell is formed by a short instability phase of the giant star as it interacts with a stellar companion, and the jets are then launched by the companion as it accretes mass through an accretion disc from the giant star. We find that the H-shaped and barrel-shaped morphological features that the jets form evolve with time, and that there are complicated flow patterns, such as vortices, instabilities, and caps moving ahead along the symmetry axis. We compare our numerical results with images of 12 PNe, and show that jet-shell interaction that we simulate can account for the barrel-like or H-like morphologies that are observed in these PNe.

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Forming H-shaped and barrel-shaped nebulae with interacting jets

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Keywords

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