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visha1v•about 4 hours ago

Stellar rotation is a crucial aspect of not only stellar evolution but also exoplanet science, and a recent study has built the largest catalog of stellar rotation periods to date.

kbelder•about 2 hours ago

When I was younger, I read that stars tended to have a bimodal distribution of rotational periods... many have a period measured in hours, and then another large group (like our sun) have a period of many days. The thought at the time was that the slower-rotating stars lost their angular momentum to planetary systems.

That makes sense to me, but that was before we had discovered exoplanets. I wonder if that theory still holds up?

A New Catalog of Stellar Rotation Periods for over a Million Stars

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Discussion (2 Comments)Read Original on HackerNews