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stellar mass

См. также в других словарях:

  • Stellar mass loss — is a phenomenon observed in some massive stars. It occurs when a triggering event causes the ejection of a large portion of the star s mass. Stellar mass loss can also occur when a star gradually loses material to a binary companion or into… …   Wikipedia

  • Stellar black hole — A stellar black hole is a black hole formed by the gravitational collapse of a massive star (20 or more solar masses, though the exact amount of mass needed has not been determined and may depend on many parameters) at the end of its lifetime.… …   Wikipedia

  • Mass–luminosity relation — In astrophysics, the mass–luminosity relation is an equation giving the relationship between a star s mass and its luminosity. The relationship is represented by the equation: where L⊙ and M⊙ are the luminosity and mass of the sun and… …   Wikipedia

  • Stellar rotation — is the angular motion of a star about its axis. The rate of rotation can be measured from the spectrum of the star, or by timing the movements of active features on the surface.The rotation of a star produces an equatorial bulge due to… …   Wikipedia

  • Stellar kinematics — is the study of the movement of stars without needing to understand how they acquired their motion. This differs from stellar dynamics, which takes into account gravitational effects. The motion of a star relative to the Sun can provide useful… …   Wikipedia

  • Stellar nucleosynthesis — is the collective term for the nuclear reactions taking place in stars to build the nuclei of the heavier elements. (For other such processes, see nucleosynthesis.)The processes involved began to be understood early in the twentieth century, when …   Wikipedia

  • Stellar wobble — is a variation in the position of a star due to the gravitational influence of another body orbiting it. Stellar wobble is visible as a Doppler redshift in the star s spectrum or as a motion of the star in the plane of the sky. The Doppler shift… …   Wikipedia

  • Stellar evolution — Life cycle of a Sun like star Stellar evolution is the process by which a star undergoes a sequence of radical changes during its lifetime. Depending on the mass of the star, this lifetime ranges from only a few million years (for the most… …   Wikipedia

  • Stellar classification — In astronomy, stellar classification is a classification of stars based on their spectral characteristics. The spectral class of a star is a designated class of a star describing the ionization of its chromosphere, what atomic excitations are… …   Wikipedia

  • Stellar structure — Stars of different mass and age have varying internal structures. Stellar structure models describe the internal structure of a star in detail and make detailed predictions about the luminosity, the color and the future evolution of the… …   Wikipedia

  • Stellar wind — A stellar wind is a flow of neutral or charged gas ejected from the upper atmosphere of a star. It is distinguished from the bipolar outflows characteristic of young stars by being less collimated, although stellar winds are not generally… …   Wikipedia

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