Results 11 to 20 of about 174,483 (232)
The Importance of Binarity in the Formation and Evolution of Planetary Nebulae [PDF]
The Impact of Binary Stars on Stellar Evolution, 2018 It is now clear that a binary evolutionary pathway is responsible for a significant fraction of all planetary nebulae, with some authors even going so far as to claim that binarity may be a near requirement for the formation of an observable nebula.
David Jones
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Confirmation of the link between central star binarity and extreme abundance discrepancy factors in planetary nebulae [PDF]
Monthly notices of the Royal Astronomical Society, 2018 It has recently been noted that there seems to be a strong correlation between planetary nebulae with close binary central stars, and highly enhanced recombination line abundances.
R. Wesson +7 more
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Binary stars as the key to understanding planetary nebulae [PDF]
Nature Astronomy, 2017 Planetary nebulae are traditionally considered to represent the final evolutionary stage of all intermediate-mass stars (∼0.7–8 M☉). Recent evidence seems to contradict this picture.
David Jones, H. Boffin
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Shaping of Planetary Nebulae by Exoplanets
Galaxies, 2020 (1) Background: We investigate the hypothesis that exoplanet engulfment can help explain the observed non-spherical planetary nebula population, as a complementary shaping mechanism to the binary hypothesis.
Nicola Keaveney +2 more
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Common Envelope Shaping of Planetary Nebulae [PDF]
Astrophysical Journal, 2018 The morphology of planetary nebulae emerging from the common envelope phase of binary star evolution is investigated. Using initial conditions based on the numerical results of hydrodynamical simulations of the common envelope phase, it was found that ...
G. García-Segura, P. Ricker, R. Taam
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Galactic Planetary Nebulae as Probes of Radial Metallicity Gradients and Other Abundance Patterns [PDF]
Astrophysical Journal, 2018 We use planetary nebulae (PNe) as probes to determine the Galactic radial oxygen gradients and other abundance patterns. We select data homogeneously from recent data sets, including PNe at large Galactocentric distances.
L. Stanghellini, M. Haywood
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Observing the signatures of AGB s-process nucleosynthesis in planetary nebulae: An origins story
Frontiers in Astronomy and Space Sciences, 2022 I relate an anecdotal history of the beginnings of a new initiative in studies of the chemical composition of planetary nebulae: namely, investigating abundances of elements beyond the iron-peak through infrared spectroscopy.
Harriet L. Dinerstein
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The Astrophysical Journal, 2023 We have studied the evolution of HuBi 1–like planetary nebulae, considering several stages of mass injection. We have carried out numerical ionization+1D hydrodynamics+atomic/ionic rate models with our code Coral1d to reproduce planetary nebulae that ...
Ary Rodríguez-González +6 more
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When the Stars Align: A 5σ Concordance of Planetary Nebulae Major Axes in the Center of Our Galaxy
The Astrophysical Journal Letters, 2023 We report observations of a remarkable major axes alignment nearly parallel to the Galactic plane of 5 σ significance for a subset of bulge “planetary nebulae” (PNe) that host, or are inferred to host, short-period binaries. Nearly all are bipolar. It is
Shuyu Tan +4 more
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Planetary Nebulae Shaped by Common Envelope Evolution [PDF]
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. It is assumed that asymmetries existing in the “slow wind” envelope would
A. Frank +5 more
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