| Abstract : | The hydrogen and helium are the most abundant elements in the universe and also the main constituents of stars. Almost all the stars are made up of hydrogen (H) and helium (He) in a specific ratio, that is helium in any star is one tenth of hydrogen, this is a standard ratio (He/H=0.1).
There are stars in the Galactic field and also in the Galactic globular clusters that are not having the standard He/H ratio, but slightly higher value such as: He/H= 0.1, 0.2, 0.3 and 0.4. This enhancement in He/H ratio means that the hydrogen is mildly deficient and helium is slightly enhanced.
The origin of this deficiency/enhancement and its significance will be discussed in my talk. |
