Sentences with phrase «dim subdwarf»
The star may even be suspected of being a dim subdwarf (sd / VI)-- like Groombridge 1830 or Kapteyn's Star — rather than a main - sequence dwarf star (V).
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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.
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.