| 21. | It has a greater luminosity than most flare stars, which are typically red dwarfs, but is less active.
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| 22. | Both members are flare stars, meaning they are red dwarf stars that undergo random eruptions that increase their brightness.
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| 23. | This group includes protostars, Wolf-Rayet stars, and flare stars, as well as giant and supergiant stars.
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| 24. | However, like the star UV Ceti, it has been observed to undergo increases in luminosity as a flare star.
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| 25. | In 1958 it was thought to have stellar companion that was also a flare star, but this was subsequently disproved.
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| 26. | At other times, some red dwarfs, called flare stars, can emit gigantic flares, doubling their brightness in minutes.
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| 27. | He provided the data that lead to Willem Jacob Luyten's discovery of UV Ceti, the first known flare star.
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| 28. | This was a discovery made in his earliest work on flare stars and solar-related phenomena which he pioneered at Armagh Observatory.
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| 29. | NPOI is one of the few major instruments globally which can conduct stellar disks ( the first in history ) and flare stars.
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| 30. | It is classified as an active flare star since it can undergo unpredictable and dramatic increases in luminosity for a period of several minutes.
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