Abstract
view Abstract Citations (80) References (16) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Decaying stellar magnetic fields, magnetic braking : evidence from magnetic observations in Orion OB1. Borra, E. F. Abstract The magnetic fields of 13 Ap and helium-weak stars in the Orion OB 1 association are observed and compared to those of older magnetic stars. It is found that the magnetic stars in Orion have magnetic fields stronger than those of the older stars by a factor of three, in agreement with a fossil origin of the fields. The short e-folding time of decay, which is estimated to be of the order of 100 million years, is seen as evidence for the view that internal mass motions are present in upper-main-sequence stars, with potentially important effects on their evolution. The periods of variation, although uncertain, suggest that young magnetic stars rotate faster than their older counterparts. This difference implies magnetic braking on the main sequence. Publication: The Astrophysical Journal Pub Date: October 1981 DOI: 10.1086/183654 Bibcode: 1981ApJ...249L..39B Keywords: A Stars; Magnetic Flux; Magnetic Stars; Orion Constellation; Stellar Evolution; Stellar Magnetic Fields; B Stars; Decay Rates; Kolmogoroff-Smirnoff Test; Main Sequence Stars; Stellar Rotation; Stellar Structure; Astrophysics full text sources ADS | data products SIMBAD (17)
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