flare star

flare star

noun Astronomy.
a dwarf star that exhibits sudden increases of magnitude similar to solar flares.
Also called UV Ceti star.


Origin:
1950–55

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Collins
World English Dictionary
flare star
 
n
a red dwarf star in which outbursts, thought to be analogous to solar flares, occur, increasing the luminosity by several magnitudes in a few minutes

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Science Dictionary
flare star   (flâr)  Pronunciation Key 
A variable star that sporadically displays sudden increases in brightness, sometimes becoming six times as bright in a matter of only a few minutes, after which it gradually fades back to its normal brightness. The cause of this phenomenon is thought to be an event similar to a solar flare, but on a more intense scale with a much higher emission of x-rays.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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