Solar Masses, and Describing the life cycle of this star. Begin at the spinning giant molecular.?
Question:
Consider a star with the following properties: 19 solar masses during its protostar stage, 16 solar masses during its main sequence life, and a 6 solar mass remnant at the end of its life. Describe the life cycle of this star. Begin at the spinning giant molecular.
So, please tell me if I'm right?!
Answer:::
I don’t believe it is logical for a star to lose 13 solar masses during its lifetime but if it did, I think, when it was in the giant molecular clouds, because of the heavy mass, the angular momentum was not constant any more and 3 solar masses had exploded out as solar wind from protostar to the space. I believe, the star was 10,000,000 years on the main sequence. After a short time, it’s going to be a yellow giant, then it’s going to be a red giant, and after that a supernova and neutron star. This is because it is 6 solar masses.
Answer:
Actually, it's quite logical. Big stars like that can "supernova", blowing off huge masses during this event. Essentially, a star is fighting gravity. The fusion reaction going on in the hearts of all stars push the surface out; The gravitational force of it's mass tries to crush it down. When the nuclear fuel is finally exhausts, the surface mass comes crashing in on the core, compressing it & generating a huge event - a supernova, further compressing the core, and blowing off the outer layers.
This mostly sounds good to me. I disagree on the yellow giant; with that much mass, I would expect a blue giant until it runs out of hydrogen at the core and goes red giant. A supernova followed by a neutron star makes sense to me.
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