Dwarf star

Under a dwarf star is a main sequence star is understood in astronomy in general. Main sequence stars represent by far the most numerous stars dar. Unlike other stars put their main-sequence stars release energy by fusion of hydrogen in the stellar core. Non- main sequence stars, however, are evolved stars whose hydrogen supply is exhausted in the core. The term dwarf is here relative to other stars of the same spectral type, but higher luminosity class.

Other stellar and substellar objects in astronomy lead "dwarf" in the name, but they are not main-sequence stars and are therefore not counted as actual dwarf stars:

  • White dwarfs are stars, where nuclear fusion is extinguished and the heat up under the pressure of gravity on up to 100.000K.
  • In the course of a white dwarf cools and becomes fainter, until it is finally become a black dwarf. These objects are so far hypothetical, that is, it has been observed no representative.
  • Brown dwarfs are substellar objects that form like stars from dense molecular clouds, but do not reach it, the necessary mass to ignite hydrogen fusion in the core.
Subdwarf Subgiant Giant star Bright giant Hypergiant Intrinsic brightness Zeta Ophiuchi Delta Leonis Epsilon Eridani Integrated Authority File
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