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

被引:6
作者
Soker, Noam [1 ,2 ]
机构
[1] Technion Israel Inst Technol, Dept Phys, IL-32000 Haifa, Israel
[2] Guangdong Technion Israel Inst Technol, Shantou 515069, Peoples R China
关键词
planetary systems; planetary nebulae; stars: binaries; stars: AGB and post-AGB; stars: variables: general;
D O I
10.3390/galaxies6020058
中图分类号
P1 [天文学];
学科分类号
0704 ;
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.
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页数:6
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