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| Paper: |
Testing Magnetic Braking: The X-ray Activity of M Dwarfs in Pre-Cataclysmic Variable Systems |
| Volume: |
372, 15th European Workshop on White Dwarfs |
| Page: |
497 |
| Authors: |
Briggs, K.R.; Napiwotzki, R.; Maxted, P.F.L.; Wheatley, P.J. |
| Abstract: |
Angular momentum loss by magnetic braking is believed to be an important mechanism in the evolution of tidally-locked white dwarf (WD) binaries. We measure the X-ray emission of a sample of M dwarfs in pre-cataclysmic variable systems to examine for the first time, if the magnetic activity of secondary stars in tidally-locked white dwarf binaries is the same as that of their single main-sequence counterparts. Our results support the extrapolation of magnetic braking prescriptions derived from single main-sequence stars to tidally-locked WD binaries, and therefore support recent results that indicate magnetic braking plays a smaller role than previously proposed. |
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