Seminar: Were all fast-rotating stars born in a binary?

Most stars are born in binary and multiple-star systems that interact and disintegrate. Even many stars that are single now probably had a companion in the past. My work looks at various aspects of the birth of multiple-star systems using 3D magnetohydrodynamical simulations to model how stellar interactions affect star and planet formation. In this talk, I will cover recent work I have submitted looking at the formation of rotators. These are low-mass stars with rotation periods of less than two days. Observations find that many fast rotators probably have a nearby companion and a lack of exoplanets. My work finds that scenarios that lead to strong spin-up events in a star can also lead to formation companions, suggesting that binary star formation pathways can inherently lead to faster-rotating stars.

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We shall leave for lunch at around 12:15. There will be fika after the seminar.