PDA

View Full Version : Slowing Down Stars



Fraser
2011-Jun-21, 02:00 AM
One of the long standing challenges in stellar astronomy, is explaining why stars rotate so slowly. Given their large masses, as they collapsed to form, they should spin up to the point of flying apart, preventing them from ever reaching the point that they could ignite fusion. To explain this rotational breaking, astronomers have invoked [...]

More... (http://www.universetoday.com/86920/slowing-down-stars/)

George
2011-Jun-21, 03:25 AM
Angular momentum transfer is an intriguing and perplexing circumstance. Ignoring relativity and self-destruction, the Sun, if it collapsed from a cloud with a radius of 0.3 lyr and a period of one million years, would have a period of only about 10 seconds.

Besides the disk braking ideas, multiple star formation within a cloud can greatly reduce the a.m. problem. Perhaps the Sun once had a young dance partner. "Dancing with the Stars" has a nice ring to it.