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单词 stellar wind
释义
stellar wind

Physics
  • The radial outflow of matter from the atmosphere of a very hot star. In the case of the sun, the stellar wind is called solar wind. The rate at which the stellar matter is emitted varies with the lifetime of the star.


Astronomy
  • The outflow of gas from the surface of a star. The Sun loses about 10−14 of its mass through the solar wind each year, but winds are of much greater importance in pre-main-sequence stars (e.g. T Tauri stars) and in giants and supergiants. Extreme stellar winds are found in X-ray binaries, in which stars of spectral type O or B can lose around 10−6 of a solar mass per year to a compact companion (a neutron star or black hole). Stars of intermediate mass can lose up to 10−4 solar masses per year through stellar winds as they evolve from the asymptotic giant branch stage into a planetary nebula.


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