stellar envelopes

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• 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 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

• Corona — This article is about the astronomical term. For other uses, see Corona (disambiguation). During a total solar eclipse, the solar corona can be seen with the naked eye. A corona is a type of plasma atmosphere of the Sun or other celestial body,… …   Wikipedia

• Galaxia cD — La galaxia elíptica gigante M87, en el centro del Cúmulo de Virgo, es clasificada cómo galaxia cD. Una Galaxia cD[1] (también Galaxia de tipo cD)[2 …   Wikipedia Español

• Laser star model of quasars — The laser star hypothesis is a hypothesis put forward by the physicist Y. P. Varshni in 1973 in response to several developments in astrophysical and earth based research, and his belief that the existing body of work on quasars, or quasi stellar …   Wikipedia

• Christian Magnan — (1er mai 1942 à Marseille) est un astrophysicien français, sous directeur de laboratoire honoraire au Collège de France. Il a exercé son travail de recherche à l Institut d astrophysique de Paris et au Groupe de Recherche en Astronomie… …   Wikipédia en Français

• cosmos — /koz meuhs, mohs/, n., pl. cosmos, cosmoses for 2, 4. 1. the world or universe regarded as an orderly, harmonious system. 2. a complete, orderly, harmonious system. 3. order; harmony. 4. any composite plant of the genus Cosmos, of tropical… …   Universalium

• Circumstellar envelope — is the part of the star, having roughly spherical shape and not gravitationally bound to the star core. Usually circumstellar envelopes are formed from the dense stellar wind or present before formation of the star. Circumstellar envelopes of the …   Wikipedia

• Supernova — This article is about the astronomical event. For other uses, see Supernova (disambiguation). Multiwavelength X ray, infrared, and optical compilation image of Kepler s supernova remnant, SN 1604. A supernova is a stellar explosion that is more… …   Wikipedia

• Asymptotic giant branch — The asymptotic giant branch is the region of the Hertzsprung Russell diagram populated by evolving low to medium mass stars. This is a period of stellar evolution undertaken by all low to intermediate mass stars (0.6 10 solar masses) late in… …   Wikipedia

• Nebular hypothesis — Star formation Interstellar medium Molecular cloud …   Wikipedia