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The stellar rotation-activity relation for a sample of SuperWASP and ASAS-SN field stars

Thiemann, Heidi B.; Norton, Andrew J.; Kolb, Ulrich C.

It is well established that late-type main-sequence (MS) stars display a relationship between X-ray activity and the Rossby number, Ro, the ratio of rotation period to the convective turnover time. This manifests itself as a saturated regime (where X-ray activity is constant) and an unsaturated regime (where X-ray activity anti-correlates with Ros…