Results 11 to 20 of about 191,657 (282)

A search for magnetic fields on central stars in planetary nebulae [PDF]

open access: yes, 2014
Departamento de Astrofisica, Universidad de La Laguna, E-38205 La Laguna, Tenerife, SpainReceived To be inserted later, accepted To be inserted laterABSTRACTContext.One of the possible mechanisms responsible for the panoply of shapes in planetary nebulae
F. Leone   +4 more
semanticscholar   +4 more sources

Confirmation of the link between central star binarity and extreme abundance discrepancy factors in planetary nebulae [PDF]

open access: yesMonthly 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
semanticscholar   +1 more source

The survey of planetary nebulae in Andromeda (M 31) [PDF]

open access: yesAstronomy & 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

Binary Central Stars of Planetary Nebulae

open access: yesGalaxies, 2020
It is now clear that a vast majority of intermediate-mass stars have stellar and/or sub-stellar companions, therefore it is no longer appropriate to consider planetary nebulae as a single-star phenomenon, although some single, isolated stars may well ...
David Jones
doaj   +1 more source

Properties of central stars of planetary nebulae with distances in Gaia DR2 [PDF]

open access: yesAstronomy & 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
semanticscholar   +1 more source

A new radio molecular line survey of planetary nebulae [PDF]

open access: yesAstronomy & 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

Common Envelope Shaping of Planetary Nebulae [PDF]

open access: yesAstrophysical 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

Shaping of Planetary Nebulae by Exoplanets

open access: yesGalaxies, 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
doaj   +1 more source

PHL 932: When Is a Planetary Nebula Not a Planetary Nebula? [PDF]

open access: yesPublications of the Astronomical Society of Australia, 2010
AbstractThe emission nebula around the subdwarf B (sdB) star PHL 932 is currently classified as a planetary nebula (PN) in the literature. Based on a large body of multi-wavelength data, both new and previously published, we show here that this low-excitation nebula is in fact a small Strömgren sphere (Hii region) in the interstellar medium around this
Parker, Quentin A.   +3 more
openaire   +5 more sources

Galactic Planetary Nebulae as Probes of Radial Metallicity Gradients and Other Abundance Patterns [PDF]

open access: yesAstrophysical 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
semanticscholar   +1 more source

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