How does metallicity affect stellar evolution? - Physics Stack Exchange Other factors influencing its evolution are the initial metallicity, rotation and magnetism Question: how does the initial sun-like metallicity affect the evolution while the star is on the main sequence, (i) in a star of $1M_\odot$ initial mass (ii) in a star of $>5M_\odot$ initial mass?
Metal-rich star formation - Physics Stack Exchange At high enough metallicity, hydrogen atoms are separated mostly from each other by metal atoms, stopping fusion and causing collapse until fusion occurs OR degeneracy pressure supports the star So if the metallicity is very high, the way I see it, fusion cannot occur due the low concentration of reactant
Stellar Activity Cycle versus Metallicity - Physics Stack Exchange A metallicity increase for example, would imply a smaller radius for equal mass Wouldn't a Sun-like star of higher lower metallicity rotate faster slower, which would speed up slow down its activity cycle?
Stellar classifiaction and metals - Physics Stack Exchange The surface temperature of the star has no direct bearing on its metal content Most stars in the immediate vicinity of the Sun have a very similar metal content What you are talking about is how this metal content affects the observed spectrum of the star If the star's photosphere is very hot then the metals become ionised and you don't see the (for instance) absorption lines caused by
galaxies - Population I and II stars - Physics Stack Exchange I can easily understand that old, low-metallicity stars are in the halo, but I'm missing something when it comes to the disk If slowly-rotating gas settled into the disk, formed stars, then did the disk at one time consist of Population II stars which have since exploded? Why didn't the same processes happen in both the disk and the halo?
Evolution of red dwarf stars - Physics Stack Exchange Red dwarfs with a present age of 10 Gy were formed when the Galactic metallicity still was low How does the original metallicity of a red dwarf influence it's evolution?