- pre-main-sequence evolution
- эволюция к главной последовательности
English-russian dictionary of physics. 2013.
pre-main-sequence evolution
Смотреть что такое "pre-main-sequence evolution" в других словарях:
Main sequence — A Hertzsprung Russell diagram plots the actual brightness (or absolute magnitude) of a star against its color index (represented as B V). The main sequence is visible as a prominent diagonal band that runs from the upper left to the lower right.… … Wikipedia
K-type main-sequence star — Hertzsprung–Russell Diagram Spectral Type Br … Wikipedia
O-type main-sequence star — Hertzsprung–Russell Diagram Spectral Type Bro … Wikipedia
Séquence principale — Le diagramme de Hertzsprung Russell figure les étoiles. En abscisse, l indice de couleur (B V) ; en ordonnée, la magnitude absolue. La séquence principale se voit comme une bande diagonale marquée allant du haut à gauche au bas à droite. Ce… … Wikipédia en Français
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
Étoile de la pré-séquence principale — Une étoile de la pré séquence principale (ou pré série principale) est une étoile encore à un stade d évolution antérieur à celui de la séquence principale. Ce peut être une étoile T Tauri ou une étoile FU Orionis, dont la masse est inférieure à… … Wikipédia en Français
North polar sequence — The North polar sequence is a group of 96 stars that was used to define stellar magnitudes and colors. The cluster of stars lies within two degrees of the Northern Celestial pole, which makes them visible to everyone on the northern hemisphere.… … Wikipedia
Evolution — This article is about evolution in biology. For other uses, see Evolution (disambiguation). For a generally accessible and less technical introduction to the topic, see Introduction to evolution. Part of a series on … Wikipedia
pre-Columbian civilizations — Introduction the aboriginal American Indian (Mesoamerican Indian) cultures that evolved in Meso America (part of Mexico and Central America) and the Andean region (western South America) prior to Spanish exploration and conquest in the 16th … Universalium
Evolution of dinosaurs — This article gives an outline and examples of dinosaur evolution. For a detailed list of interrelationships see Dinosaur classification. Further information: Evolution of reptiles Evolution of dinosaurs Dinosaurs evolved from the archosaurs 232… … Wikipedia
Formation and evolution of the Solar System — Artist s conception of a protoplanetary disk The formation and evolution of the Solar System is estimated to have begun 4.568 billion years ago with the gravitational collapse of a small part of a giant molecular cloud … Wikipedia
