The star then reaches the main sequence, where it remains for most of its active life. |
Several million years is a long time in comparison to a human life span, but it is short in comparison to the life span of main sequence stars. |
The lower mass limit for a main sequence star is about 0.08 that of our Sun or 80 times the mass of Jupiter. |
Therefore no low mass star in the Universe has yet completed its time on the main sequence. |
But the stars of mass lower than 8-10 solar masses have just started evolving beyond the main sequence. |
Thus, the Sun, a main-sequence star, is classified as G2 V, in which the V denotes main sequence. |