cavediver
Member (Idle past 3674 days) Posts: 4129 From: UK Joined: 06-16-2005
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Message 59 of 66 (255496)
10-29-2005 3:22 PM
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Reply to: Message 57 by NosyNed
10-27-2005 3:34 PM
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Re: Sun's mass loss
Hi Ned... The giant phase begins not with "other fusion reactions" but more hydrogen fusion, only not in the core but further out. This increases the effective pressure in the outer layers and you get the expansion. The lack of hydrogen burning in the core causes a drop in local pressure, and local gravitational collapse. This heats the core to the point where helium burning can begin. If sudden enough, this gives rise to the "heluium flash".
| This message is a reply to: | | | Message 57 by NosyNed, posted 10-27-2005 3:34 PM | | NosyNed has not replied |
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