Can you tell me how long it takes to form a mega-star? I believe these can be about 20 times the mass of our sun. I'm thinking that gathering much a vast quantity of material would take a while -- but maybe it all comes together in just a few million years? And then burns up in a few million years? Are these massive hyperstars just little blinks in the age of the universe?
From what I understand, just an amateur, these giant stars tend to form in denser dust clouds. I do not know the time it takes to form compared to out ordinary Sun but given the higher density of the dust gravity takes over and I do not believe one is talking about a big difference but as I said this is pure conjecture on my part.
Found this on wikipedia:
In high mass stars, the length of the star formation process is comparable to the other timescales of their evolution, much shorter, and the process is not so well defined.
For stars with masses higher than about 8 solar masses, however, the mechanism of star formation is not well understood.