Sentences with phrase «red subdwarf»
NASA — larger image Kapteyn's Star is a very dim red subdwarf, somewhat bluer and dimmer than Gliese 623 A (M2.5 V) and B (M5.8 Ve) at lower right.
http://www.solstation.com/
Kapteyn's Star is a dim red subdwarf or main sequence (sdM0 - 1.5 or V), halo star (John E. Gizis, 1997, page 809; and NASA Star and Exoplanet Database), which is thought to be originally a member of the Milky Way galaxy's luminous halo.
Not exact matches
The stars may be passing through a stage of stellar evolution that lasts no more than a few tens of thousands of years, the scientists say — a phase between red giants (about 30 or 40 times the size of our sun) and blue subdwarfs (stars about one - fifth the size of our sun but seven times hotter and 70 times brighter).