If astronomers were to observe a "violet shift" for a certain star, what could they infer?

Explain why?

If astronomers were to observe a "violet shift" for a certain star, what could they infer?
Basically it's a blueshift. Blue Shift refers to a shortening of a transmitted signal's wavelength, and/or an increase in its frequency. The name comes from the fact that the shorter-wavelength end of the optical spectrum is the blue (or violet) end, hence, when visible light is compacted in wavelength, it is "shifted towards the blue", or "blue-shifted". Since the longer-wavelength end of the visible electromagnetic spectrum is red, the opposite effect, of a lengthening of a signal's wavelength, is referred to as redshifting.
Reply:when an object moves closer to an observer the wavelength of the light it emits is basically compressed, which makes it bluer.





so a blue shift (or a violet shift as u have called it) would mean the object (most cases its a galaxy) is moving towards us.





something has to be moving fairly fast for this to be noticeable, even then its hard to notice.
Reply:The Andromeda Galaxy, our sister galaxy in space, shows a blue shift as it is more commonly called, meaning it is rushing towards us and will arrive here in a few billion years.





Adolph