Planets, Planetary Nebulae, and Intermediate Luminosity Optical Transients (ILOTs)

Galaxies

Noam Soker¹ 

[1] Department of Physics, Technion, Israel Institute of Technology, Haifa 32000, Israel;

关键词: planetary systems;    planetary nebulae;    stars: binaries;    stars: AGB and post-AGB;    stars: variables: general;   

DOI  :  10.3390/galaxies6020058

来源: DOAJ

【 摘 要 】

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 substellar, 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.

【 授权许可】

Unknown