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Planets, Planetary Nebulae, and Intermediate Luminosity Optical Transients (ILOTs)
Version 1
: Received: 16 April 2018 / Approved: 16 April 2018 / Online: 16 April 2018 (14:05:31 CEST)
A peer-reviewed article of this Preprint also exists.
Soker, N. Planets, Planetary Nebulae, and Intermediate Luminosity Optical Transients (ILOTs). Galaxies 2018, 6, 58. Soker, N. Planets, Planetary Nebulae, and Intermediate Luminosity Optical Transients (ILOTs). Galaxies 2018, 6, 58.
Abstract
I review some aspects related to the influence of planets on the evolution of stars before and beyond the main sequence. Some processes include the tidal destruction of a planet on to a very young main sequence star, on to a low mass main sequence star, and on to a brown dwarf. This process releases gravitational energy that might be observed as a faint intermediate luminosity optical transient (ILOT) event. I then summarize the view that some elliptical planetary nebulae are shaped by planets. When the planet interacts with a low mass upper asymptotic giant branch (AGB) star it both enhances the mass loss rate and shapes the wind to form an elliptical planetary nebula, mainly by spinning up the envelope and by exciting waves in the envelope. If no interaction with a companion, stellar or sub-stellar, takes place beyond the main sequence, the star is termed a Jsolated star, and its mass loss rates on the giant branches are likely to be much lower than what is traditionally assumed.
Keywords
planetary nebulae: general;
stars: AGB and post-AGB;
stars: variables: general;
stars: winds, outflows
Subject
PHYSICAL SCIENCES, Astronomy & Astrophysics
Copyright: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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