Why Are Two Stars Leaving Our Galaxy?

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Two exiled stars are departing from our galaxy at high speeds, marking a significant astronomical event. The discussion highlights that unlike comets, hypervelocity stars do not leave behind a fiery tail, as their movement does not generate a dust or ion tail. Instead, any interaction with nearby powerful O/B stars may create a shadow effect in the stellar wind nebula. The conversation emphasizes the unique characteristics of these stars and their behavior in the galaxy. Understanding these phenomena contributes to our knowledge of stellar dynamics and galactic evolution.
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Does a hypervelocity star leave a fiery trail, like a comet's dust tail?
 
There is no reason for a star of any velocity to "leave a fiery tail".

A comet's tail is produced by the radiation pressure (dust tail) and solar wind/magnetic field (ion tail) coming from the Sun.

If a star is moving close by another very powerful O/B star then the radiation pressure and possible stellar wind emanating from that could act of the former's corona and produce some sort of tail, however ithe passing star is more likely to produce a shadow in the O/B stellar wind nebula, similar to the Cone nebula.

Garth
 

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