Single X-ray Stars
Main article: Single X-ray starIn addition to the Sun there are many unary stars or star systems throughout the galaxy that emit X-rays. β Hydri (G2 IV) is a normal single, post main-sequence subgiant star, Teff = 5800 K. It exhibits coronal X-ray fluxes.
The benefit of studying single stars is that it allows measurements free of any effects of a companion or being a part of a multiple star system. Theories or models can be more readily tested. See, e.g., Betelgeuse, Red giants, and Vega and Altair.
Read more about this topic: X-ray Astronomy
Famous quotes containing the words single and/or stars:
“It is handsomer to remain in the establishment better than the establishment, and conduct that in the best manner, than to make a sally against evil by some single improvement, without supporting it by a total regeneration.”
—Ralph Waldo Emerson (1803–1882)
“Away in a manger, no crib for a bed,
The little Lord Jesus laid down His sweet head.
The stars in the bright sky looked down where He lay—
The little Lord Jesus asleep in the hay.”
—Martin Luther (1483–1546)