Weakened magnetic braking as the origin of anomalously rapid rotation in old field stars

Jennifer L. van Saders (), Tugdual Ceillier, Travis S. Metcalfe, Victor Silva Aguirre, Marc H. Pinsonneault, Rafael A. García (), Savita Mathur and Guy R. Davies
Additional contact information
Jennifer L. van Saders: Carnegie Observatories
Tugdual Ceillier: Laboratoire AIM, Centre de Saclay
Travis S. Metcalfe: Space Science Institute
Victor Silva Aguirre: Stellar Astrophysics Centre, Aarhus University
Marc H. Pinsonneault: Kavli Institute for Theoretical Physics, University of California
Rafael A. García: Kavli Institute for Theoretical Physics, University of California
Savita Mathur: Kavli Institute for Theoretical Physics, University of California
Guy R. Davies: Stellar Astrophysics Centre, Aarhus University

Nature, 2016, vol. 529, issue 7585, 181-184

Abstract: The age of a young to middle-aged star can be determined from how quickly or slowly it rotates, but the relationship breaks down for old stars; models now show that old stars are rotating much more quickly than expected, perhaps because magnetic winds are weaker and therefore brake the rotation less effectively.

Date: 2016
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DOI: 10.1038/nature16168

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