Star Family IIDistribution inGlobular clusterLiElliptical galaxyLi andSpiral galaxyThe core part of theSub dwarf。Star Family IThe metal content of stars is more than that of Galaxy II and may be younger.Near the sun, stars of family I mainly orbit in circular orbitsGalaxyThe orbits of the stars in the family II are mainly elliptical.Galaxy I, like the sun, contains rich elements heavier than hydrogen and helium;Family II is relatively small and contains only a few heavy elements.Astronomers call them metal poor stars. They are very old, but they still contain a small amount of carbon, oxygen, silicon and iron from the first generation stars.
