The Stars || News || About Stars | Nearest Stars | Big Stars | Special Stars | Exoplanets | Prototype Stars || Constellations || Galaxies || Planets | Moons | Solar System || Convert Values || Stellar Records || Imprint & Privacy

         

Anzeige


About Stars: Intermediate Stages

Stars that have left the main sequence are seldom stable. They run through several phases in which they can pulsate very quickly or also very slowly. There are some kinds of pulsating variables, the most famous are the regular Delta Cepheids.

When leaving the main sequence white and blue stars on their way to red go through a phase as a subgiant and change in the sequence blue - white - yellow - orange - red.

Probably only very few big stars, that have a bit to less mass to become LBV, have as hypergiants another yellow or white phase again short before their end. These stars like Rho Cas are at the Hertzsprung-Russell diagram placed in the yellow evolutionary void, where they can't be stable.

Example: Deneb

Back: About Stars | Continue: White Dwarfs
   
Photo: Nasa

    Astronomical articles released under Creative Commons: Imprint & Privacy
This site in German: Sterne und Planeten


Astronomy: Stars & Planets | © Jumk.de Webprojects

Images of Chemical Elements