Results 11 to 20 of about 48,210 (191)
The influence of planetary nebula gas density fluctuations to its emission line spectra
Вісник Астрономічної школи, 2000 The set of spheric-simmetrical photoionization models of planetary nebula luminescence for different radial gas density distributions for central stars temperatures T = 50000 K and T = 100000 K was created.
N. V. Gavrilova, N. L. Tishko
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A Preferred Orientation Angle for Bipolar Planetary Nebulae
Galaxies, 2020 We present preliminary results from measuring Galactic orientation angles of 766 elliptical and bipolar Planetary Nebulae (PNe) in the Hong Kong/Australian Astronomical Observatory/Strasbourg Observatory H-alpha Planetary Nebula research platform and ...
Andreas Ritter, Quentin A. Parker
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ABOUT TEMPERATURE FIELDS AND CONDITIONS OF GASEOUS CONDENSATION OF NEBULAES IN THE PLANETARY VORTEX
Vìsnik Dnìpropetrovsʹkogo Unìversitetu: Serìâ Modelûvannâ, 2014 New exact solution of the spherically-axissymmetric Eiler's equations, called as planetary vortex, is applied to the problem of formation in planetary nebula germs of planets due to the condensation of gases in the areas of vortex instability which ...
L. V. Klyuchinskaya, V. I. Perechrect
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The Real-Time Evolution of V4334 Sgr
Galaxies, 2018 V4334 Sgr (Sakurai’s object) is an enigmatic evolved star that underwent a very late thermal pulse a few years before its discovery in 1996. It ejected a new hydrogen-deficient nebula in the process. The source has been observed continuously since,
Peter A. M. van Hoof +7 more
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SMC SMP 24: A Newly Radio-Detected Planetary Nebula in the Small Magellanic Cloud [PDF]
Serbian Astronomical Journal, 2010 In this paper we report a new radio-continuum detection of an extragalactic planetary nebula (PN): SMC~SMP~24. We show the radio-continuum image of this PN and present the measured radio data.
Bojicic, I. S. +2 more
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Complex molecules in the Orion Kleinmann-Low nebula
BIO Web of Conferences, 2014 In the framework of the delivery to the early Earth of extraterrestrial molecules, we have studied complex molecular species toward the Orion Kleinmann-Low nebula. This nebula is rich in molecules as well as in nascent stars and planetary systems.
Despois D. +7 more
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Integral Field Spectroscopy of Planetary Nebulae with MUSE
Galaxies, 2020 The Multi-Unit Spectroscopic Explorer (MUSE) is a large integral field unit mounted on the ESO Very Large Telescope. Its spatial (60 arcsecond field) and wavelength (4800–9300Å) coverage is well suited to detailed imaging spectroscopy of extended ...
Jeremy R. Walsh, Ana Monreal-Ibero
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Common Envelope Shaping of Planetary Nebulae. IV. From Proto-planetary to Planetary Nebula [PDF]
, 2022 We present 2D hydrodynamical simulations of the transition of a proto-planetary nebula to a planetary nebula for central stars in binary systems that have undergone a common envelope event. After 1,000 yr of magnetically driven dynamics (proto-planetary nebula phase), a line-driven stellar wind is introduced into the computational domain and the ...
arxiv +1 more source
Irradiation Investigation: Exploring the Molecular Gas in NGC 7293
Galaxies, 2020 Background: Many planetary nebulae retain significant quantities of molecular gas and dust despite their signature hostile radiation environments and energetic shocks.
Jesse Bublitz +7 more
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Planetary nebula or symbiotic Mira? Near infrared colours mark the difference [PDF]
Astron.Astrophys.377:L18,2001, 2001 Nebulae around symbiotic Miras look very much like genuine planetary nebulae, although they are formed in a slightly different way. We present near infrared photometry of known and suspected symbiotic nebulae obtained with the Deep Near Infrared Southern Sky Survey (DENIS).
arxiv +1 more source