Results 11 to 20 of about 172,889 (233)
The Formation of Fullerenes in Planetary Nebulae
Galaxies, 2018 In the last decade, fullerenes have been detected in a variety of astrophysical environments, with the majority being found in planetary nebulae. Laboratory experiments have provided us with insights into the conditions and pathways that can lead to ...
Jan Cami +4 more
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Planetary Nebulae: Sources of Enlightenment [PDF]
Publications of the Astronomical Society of the Pacific, 2021 In this review/tutorial we explore planetary nebulae as a stage in the evolution of low-to-intermediate-mass stars, as major contributors to the mass and chemical enrichment of the interstellar medium, and as astrophysical laboratories.
K. Kwitter, R. Henry
semanticscholar +1 more source
Emerging Minds Journal for Student Research, 2023 This project compares two planetary nebulae (NGC 1514 and NGC 40) and studies the difference between them in their chemical composition. Observations of the two planetary nebulae were done at Clanfield Observatory with the 24-inch Ritchey-Chrétien ...
Shahd Eliwa
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Abell 30 - A binary central star among the born-again planetary nebulae [PDF]
, 2020 Eight planetary nebulae have been identified as `born-again', a class of object typified by knotty secondary ejecta having low masses ($\sim$$10^{-4}$ M$_{\odot}$) with nearly no hydrogen.
G. Jacoby, T. Hillwig, David Jones
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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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The survey of planetary nebulae in Andromeda (M 31) [PDF]
Astronomy & Astrophysics, 2019 Context.The age–velocity dispersion relation is an important tool to understand the evolution of the disc of the Andromeda galaxy (M 31) in comparison with the Milky Way.Aims.We use planetary nebulae (PNe) to obtain the age–velocity dispersion relation ...
S. Bhattacharya +9 more
semanticscholar +1 more source
A new radio molecular line survey of planetary nebulae [PDF]
Astronomy & Astrophysics, 2019 Certain planetary nebulae (PNe) contain shells, filaments, or globules of cold gas and dust whose heating and chemistry are likely driven by UV and X-ray emission from their central stars and from wind-collision-generated shocks.
J. Bublitz +5 more
semanticscholar +1 more source
Properties of central stars of planetary nebulae with distances in Gaia DR2 [PDF]
Astronomy & Astrophysics, 2019 Context. We have compiled a catalogue of central stars of planetary nebulae (CSPN) with reliable distances and positions obtained from Gaia Data Release 2 (DR2) astrometry.
I. González-Santamaría +4 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
semanticscholar +1 more source