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A stellar evolutionary model is a mathematical model that can be used to compute the evolutionary phases of a star from its formation until it becomes a remnant. The mass and chemical composition of the star are used as the inputs, and the luminosity and surface temperature are the only constraints.
Learn how stars are born, evolve and die, and how they produce and enrich the elements in the Universe. Explore examples of stars at different stages, from protostars to black holes, and how Chandra observes them with X-rays.
Stellar evolution is the process by which a star experiences a sequence of drastic variations during its stellar life. Depending on the initial stellar mass, this lifetime ranges from a few million years for the most massive to trillions of years for the least massive, which is considerably longer than the age of the Universe at 13.7 billion years.
Learn how stars of different masses evolve and end their lives in various ways, from white dwarfs to black holes. See X-ray images of star clusters, protostars, red giants, blue giants, red dwarfs, and planetary nebulae.
Learn how stars change over their lifetimes, from formation to death, and how their properties depend on their mass. Explore the research topics and methods of Harvard & Smithsonian astronomers who study stellar structure and evolution.
Learn how stars change with time, from birth to death, depending on their mass and nuclear reactions. Explore the HR diagram, the evolution of low-mass and high-mass stars, and the end states of stellar evolution.
14 Οκτ 2021 · Definition. Stellar evolution refers to the changes in the internal and global properties of stars during their lifetime. Overview. Stars are fundamental entities providing light and energy in the Universe, as well as producing most of the chemical elements. The study of their internal structure and evolution is thus at the basis of astrophysics.
